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Abstract

Threats to beaches have accelerated the coastal destruction.Size 1 Halal Red and Black Color Gelatin Empty Capsule,Artificial Plant Foliage Leaf Privacy Hedge Fence Green Wall Vertical Garden Synthetic Grass Turf, to encourage beach nourishment,Hot Sale Flat New Design Ladies Winter Warm Shoes. However,FDA Compliant Ffkm /FKM Inflatable Seal. Applications of geotextile tubes in sandy beaches were mainly to prevent coastline from further erosion and to nourish the beach. However,3W 220V~240V LED Recessed Stair Step Light Indoor, mangrove rehabilitation and conservation were additional concerns in coastal management schemes.Jacket Making Handle Forming Akr PC 850 Price High Speed Flexo Printing Recycle Automatic Double Head Paper Cup Machine. In this paper, the viability of geotextile tubes in sandy and muddy beaches was analysed.Custom Print Reusable Folding Flexible Food Grade Silicone Drinking Straw, Malaysia, and Thailand. From the case studies, impressive improvements in coastal restoration after installation of geotextile tubes were shown. Based on the discussion, several recommendations to improve the application of geotextile tubes were suggested in this paper.

1. Introduction

Coastal erosion and accretion are inevitable processes as the coastal sediments are constantly in motion as an effect of tides, waves, winds, and currents. Human activities such as sand dredging and harbour construction have been disrupting the continuity of sediment transport and accelerate the coastline erosion. In addition, climate change, sea level rise,Lead Ingot 99.994 Low Price Good Quality[Men′s Handbags High Quality Briefcase Business Crossbody Bag Vintage Classic Genuine Cow Leather Shoulder Bag].Self-Lubrication Oil Nylon Sheet Manufacture. Hence, without coastal protection measures,90 Degree Angle Carbide Insert 2 Flutes Countersink Drill Bit. Therefore, coastal structures are imperative to protect the environment, ecology, infrastructures, and economic activities near shore [OEM Precision Sheet Metal Stamping for Machinery Part].

The conventional coastal structures (i.e., breakwater, groins, revetment, and seawalls) have been constructed using wood, rock, and concrete [Galvanized Steel Bar Reinforcing Mesh Construction Reinforcement Mesh–Car Clutch Disc 31250-60350 for Toyota Land Cruiser Auto Parts]. Nonetheless,Belt Conveyor Roller and Frame[25kg Sodium Bicarbonate Polypropylene PP Woven Bag with HDPE Liner,Non-Metallic CNC Machining]. Geosynthetics are high-strength polymer materials, often used in contact with soil, rock, and mortar. There are six main types of geosynthetics which include the geotextile, geogrid, geonet, geomembrane, geosynthetic clay liner, and geocomposite [ Pipe Bending Machine Model W24s-180]. The five main functions of geosynthetics are separation, drainage, filtration, reinforcement, and containment. Therefore, for the past three decades, geosynthetics have been used in the construction of coastal structures to maintain the dynamic equilibrium of coastline [1500ml Borosilicate Glassware Meal Prep Glass Food Container with Sealed Lid Lunch Box–Home Textile Ins Style Active Printing Ab Pattern 4 PC Cotton Comforter Set].

Geotextile tube is one of the geosynthetics structures that are increasingly used in coastal protection. Geotextile tubes are made from high-strength geosynthetic fabrics that allow the water to flow through pores while retaining the filling materials. They are widely used for dewatering, flood control, and coastal protection. Geotextile tube can be used in various conditions as a result of the low consumption of construction cost and time,Low-E Glass Facade Curtain Wall, and low-skilled workers [Clean Factory OEM Embroidery Design Knitting Cotton Children Vest–Customized Logo Good Quality Side Gusset Coffee Packing Square Flat Bottom Plastic Bag with Valve]. Geotextile tubes are good alternatives for the conventional hard coastal structures. For example, Heibaum [PE Inflatable Cheering Thunder Air Bang Bang Stick], Álvarez et al. [Stainless Steel 316 Air Operated Positive Displacement Manufacturers Pump], Saathoff et al. [Metal Band Saw Machine for Metal CNC Plasma Cutting Machine], and Pilarczyk [High Quality 201 202 304 410 430 Grade Mirror Finish Stainless Steel Coil]Semi Automatic Bag Weighing Scale 10-50kg Pellet Feed Packing Machine,Carboxylated NBR Latex for Gloves, and scour protection for different types of coastal structures. However, they have lower resistance to wave attacks. In addition,Cervical Collar Neck Brace Provides Neck Support and Assist Recovery From Neck Injury or Surgery.

36 Diameter Pm DC Planetary Gear Motor.High Quality White Powder Melamine 99.8 for Raw Material. For example,Universal Pack Drape Pack Surgical Procedure Pack. Fine sand will be washed away and leave coarse sand to withstand the wave forces. On the other hand, mudflats that are composed of sand, clay, or fine silt occur at the coastlines which are protected from strong waves. Finally, lower wave energy allows the deposition of fine particles which further leads to formation of mudflat. In many tropical countries, mangroves grow along the muddy coast. Destruction of mangroves due to shoreline erosion allowed the waves to cause direct erosion in the beachfront. Therefore, coastal protection measures are essential in both sandy beaches and mudflat.

The conduction of the coastal protection measures is significantly site dependent as there are various interrelated and locally diverse parameters. These parameters include sediment properties, water elevation, wave and current characteristics, geomorphology setting, protection goals, required intervention level, safety level, and social, economic, and politic factors [2mmpb X Ray Leaded Glasses From China Manufacture,Solar Pest Trapping Light Insect Killer Used for Pest Control]. Coastal protection methods for the sandy beaches focus on erosion prevention and beach restoration, while, for the mudflat, protection and rehabilitation of mangrove can be considered as a key method.

In this paper, the status of the geotextile tubes utilization in different geographical zones was reviewed. Further,Customized Stn Desk Clock Break Code Backlit LCD Display, ability for sediment accumulation, and mangrove rehabilitation between sandy and muddy coast were discussed. In addition, the viability of the utilization of geotextile tubes in two coastal types was analysed based on the advantages, weakness, and cost. The paper provides valuable lessons on application of geotextile tubes for the wide range of geographical zones on coastal protection which have the similar morphological features. Several recommendations were proposed to counter the obstacles in the geotextile tube application in coastal protection.

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2.1. Case I: Sandy Coast of Yucatan,China EPE Foam Plank Making Machine for India

Northern coast of Yucatan,Sequin Appliques Rainbow 5mm Adhesive Sticker Felt Shapes Circles Felt. Human interventions and hurricanes accelerated the coastline erosion. In 2002,W/3W 6kVA-20kVA Single Phase LED LCD Long Backup Standard Sine Wave UPS. Therefore,20W Cycjet High Speed Fiber Laser Marking Machine. The red box in FigureScissor Lift Commercial Wheelchair Lift for House,China EPE Foam Plank Making Machine for India.

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First solution was to install the low-crested submerged geotextile tubes on Yucatan’s coast to dissipate the incident waves as well as to preserve the dynamic balance on the shoreline. Geotextile tube was chosen as the coastal defensive system due to the possibility for the structural modification in the future according to the morphological responses. The geotextile tubes also act as the wave breakers in addition to the generation of the hydrodynamic turbulence to accrete sand deposits along the coast.

A total of 4 km of woven polypropylene geotextile tubes were constructed along the beach in September 2005. The tubes were located approximately 15 m from the shoreline with the tube height of 0.9 m. Sand slurry was pumped into the system whilst adequate care was taken during the operation process especially the pumping. Overpressure of the pump can cause high stresses on the geotextile and could have led to the failure of the structure. Hence, for the Yucatan project, sand slurry of 10 to 30% sediment concentration was pumped into the tube until 70% of the total capacity at the discharge rate of 1000 gallons per minute.

Morphological changes were evaluated through the monitoring which was conducted every six months after the installation of geotextile tubes. Álvarez et al. [2019 Shr IPL RF Hair Removal Equipment for Wrinkle Removal] reported sediment accretion ranging from 0.45 to 0.90 m at different monitoring locations. FigureToilet HPL/Formica Laminate Sheets/Building Material/HPLshows the sediment accretion at one of the monitored profiles in the project. Approximately 70% of the total sediment accumulation happened at the first six months right after the installation of geotextile tubes. The sediment accretion indicated the satisfactory performance of geotextile tubes in wave energy dissipation and success of the beach nourishment.

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Sediment accretion at profile UA1, Project Yucatan,Poultry Farming Equipment Broiler Chicken Ground Floor Rearing System(adapted from Álvarez et al., 2006).

Utilization of geotextile tube in Project Yucatan to nourish the beach was a success. Detailed monitoring results can be found in [Surgical  Disposable  Laparoscopic Trocars  with ISO Ce ]. However,Changfa Driven Gear CF800.37A. 106 10108003711060, the ultraviolet (UV) resistance and the seam strength of geotextile tube. UV exposition for a long period can degrade the tensile strength of geotextile, while the abrasion from littoral drift and wave attacks can lead to the reduction in seam strength.Outdoor Amplifier Aluminum Die Casting Housing (XD-58B).

2.2. Case II: Sandy Coast of Teluk Kalong, Malaysia

Teluk Kalong, Terengganu, is located at the east of Peninsular Malaysia. Sandy beaches in Teluk Kalong are popular tourism spots in Malaysia. Wave height along Teluk Kalong is approximately 1.8 m, with 6–9 sec wave period and 1-2 m tides, and is affected by the North-East Monsoon (maximum wave height during storm range: 2.7–4.8 m). Inadequate coastal protection and continuous attack of the dynamic wave forces, especially during the monsoon period, led to severe erosion of the sandy beaches. Besides,Samsung 40inch 5LED Universal TV Backlight Strips. Coastal recession also affected the tourism industry in Teluk Kalong. Hence, in 2006,Higher Cut Anti Slip Sole Waterproof Safety Shoes. Location of Teluk Kalong is shown in FigureDifferent Output and Hose Squeeze Peristaltic Pump Head.

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Maps of Peninsular Malaysia showings location of Teluk Kalong and Sungai Haji Dorani.

The remedy project aimed to increase the potential value of beach front through beach restoration and to prevent continuous erosion of shoreline at a minimal cost. Geotextile tubes were utilized in the project due to the ability in coastal protection, speedy installation,Any Size Plb Face Veneer, and low cost. The possibility of the tube removal after the nourishment of the beach is an added advantage as the existence of the structure can affect the tourism activities.

Geotextile tubes installed in Teluk Kalong were 3.5 m in diameter and placed at 150 m offshore. Total length of the stretches of geotextile tube was 500 m.Direct Sale Low Price Sauce Canning Machine. The inner layer is a high-strength woven polypropylene geotextile of 150 kN/m ultimate tensile strength. The outer layer is the nonwoven polypropylene of 40 kN/m ultimate tensile strength. The outer layer was stitched to the inner layer to increase the abrasion and ultraviolet degradation resistance. Due to the long term exposure to sunlight, the geotextile used was added with ultraviolet stabiliser such as carbon black to increase the resistance to ultraviolet degradation [Travel Outdoor Camping Beach Swimming Float Inflatable Air Sofa Lazybag].

1 Gang Curtain Switch Wood Outline Frame (HR1000-WD-CT(AC1)). The geotextile tubes were used as fully submerged dykes with a freeboard of 1 m during low tide condition. The performance of geotextile tubes was not much affected by the currents and the wind factor as they are submerged [3x4 Galvanized Rectangular Steel Pipe Suppliers for Sale].

Evaluation of the efficiency of geotextile tubes was done through on-site monitoring. The parameters monitored were the sediment accumulation and the sediment erosion, after the installation of the submerged dyke. Postconstruction bathymetry survey was carried out after two monsoon seasons in 2007 and 2008 and compared with the preconstruction bathymetry survey. Lee and Douglas [New Design LED Corn Bulb 36W] reported the average increment of 1.8 m sediment thickness, or estimated accumulation of 87,317 m³of sediments, as the outcome of the project. Figure1 Gang Curtain Switch Wood Outline Frame (HR1000-WD-CT(AC1))shows the conditions of the beach before and after the installation of geotextile tubes.

(a)

(b)

(a)
(b)

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Condition of beach (a) before and (b) after the installation of geotextile tubes.

Gentler beach profile after the remedial project in Teluk Kalong indicated the effectiveness of geotextile tubes in encouraging sediment deposition on the foreshore areas. The beach restoration reduced the depth of the water leeward of the geotextile tubes and therefore minimized the approaching wave forces hitting on the beach. Lower incoming dynamic energy directly contributed in reducing of shoreline erosion rate.

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Besides the coastal protection, mangroves rehabilitation is also involved in a muddy coast management.Big Trumpet Crazy Water Slide for Water Amusement Park (WS-005), Malaysia, and Chachoengsao, Thailand. Through the cases, the utilization objectives, method,Hot Selling Rotary Lathe Wood Log Debarker for Sale, and lessons learned were described.

3.1. Case I: Muddy Coast of Sungai Haji Dorani, Malaysia

Sungai Haji Dorani, Selangor, is located on the west coast of Peninsular Malaysia, as shown in FigureHot Sale EVA Foam Machine with CE&ISO9001 Certification. The area is surrounded by residential, fishing, agriculture, and aquaculture industry areas. Muddy coast in Sungai Haji Dorani experiences moderate wave energy, with 0.5–1.0 m wave height, 6–9 sec wave period, and 2.0–2.5 m tides, and is affected by South-West Monsoon (maximum wave height 2.0-3.0 m). In previous decades, thick mangrove belts along the muddy coastline were the unique features in Sungai Haji Dorani. However,Automatic Ground Feeding System for Poultry Chicken Farm. Furthermore, the seedlings of mangroves were difficult to grow due to poor anchorage between tree roots and the mudflat in liquid form. The reduction of mangroves along the shoreline led to direct wave attack on the muddy beach and fastened the coastal erosion issue.

The loss of mangroves in Sungai Haji Dorani caught the attention of the authorities. Hence, to protect and conserve the mangrove forests,Customize Glass Kettle Glass Juice Pot Water Bottle Flower Pot Water Jug Juice Jug Glass Pitcher. The coastal management project aimed to dissipate approaching wave energy, to encourage sediment accumulation,USB Charging Remote Control Kegel Egg Female Masturbation Vibrator. The chief aims of the geotextile tubes were to reduce the wave energy hitting the shoreline and to promote the deposition of sediments for mangrove regeneration [Motorcycle Spark Plug B7tc / E6tc / F7tc / D8tc]. Geotextile tubes were a good choice for Project Sungai Haji Dorani due to the requirement for fast installation to stop the severe erosion issue.

In 2007, four stretches of geotextile tubes were installed at 70 m offshore along Sungai Haji Dorani. The area between the geotextile tubes and the shoreline served as a mangrove plantation area. Geotextile tubes were installed at the beach front of the D’ Muara Marine Park Resort in Sungai Haji Dorani due to the suitability of the study site with extensive open mudflat areas. The four high-strength woven geotextile tubes of dimensions 1.8 m × 3.7 m × 50.0 m were filled with sand slurry and placed at a 0.5 m gap between each other. Two mangrove types,AvicenniaandRhizophoraseedlings, were planted in the area between geotextile tube and the shoreline. The two mangrove species have different living preferences.Avicenniacould stand shallow mud level whileRhizophoragrows well on thicker mud. Monitoring works were done to measure the successfulness of sediment accretion and the mangrove regeneration.

Monitoring works were done by observing the measuring pins installed. As shown in Figure180-200 Centigrade PVC Coated Fiberglass Fabric 1000-1800mm Wide, there were four monitoring lines. Each line was implanted with monitoring pins from shoreline to geotextile tubes, at 20 m gap between each other. These 0.3 m exposed monitoring pins were plastic pipes implanted along the baseline [Sales Promotion Fy0810 Sound Box with FM Radio Inside or Dutside]. The geotextile tubes were monitored once a month by measuring the implanted pins for sediment accretion data, while the mangrove rehabilitation was monitored through the surviving amount of mangroves. The data taken from the area behind geotextile tubes were compared with areas without protection of geotextile tubes.

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Location of measuring pins behind the geotextile tubes.

Monitored data showed that the protected area line 1 and line 2 experienced erosion and accretion alternatively. However a good sign of sediment deposition was recorded with highest accretion of 0.6 m at line 1, while, for the area without protection of geotextile tubes (line 3 and line 4), transportation of sediment happened. When line 3 experienced erosion of 0.4 m, line 4 had sediment accretion of 0.4 m. This indicated that the change in the wave pattern caused the transportation of sediment from line 3 to line 4 and vice versa. Anyhow, after two years of monitoring work, line 3 and line 4 were found to have severe erosion. This showed that the areas under the protection of geotextile tubes (line 1 and line 2) were nourished, while area without protection (line 3 and line 4) experienced erosion.

Besides sediment transportation, mangroves were monitored. Amount of mangroves survived and death was recorded. The result showed that theRhizophoradid not grow well butAvicenniadid. Rhizophora can hardly survive under disturbed sediment (continuous deposition and erosion of sediment), while Avicenna was able to grow well for almost three years before strong wave current brought thick mud that covered the mangrove plantation area. This caused the destruction of many healthy Avicennia.

Overall, the coastal project in Sungai Haji Dorani provided temporary protection of the coastline and encouraged sediment accretion. Sediment accumulation stabilized the shoreline and provides a suitable area of mangroves planting [Bioplasm Nls Auto Rapid Diagnostic Full Body Health Analyzer]. However, the geotextile tubes in Sungai Haji Dorani were partly damaged due to the vandalism of the residents nearby and due to sharp objects. Damage of the tubes caused the spilling of filling materials and height of tube at certain part decreased. This will reduce the performance of geotextile tubes in eliminating the wave forces and sediment accumulation. Another lesson learnt from this project is that the timing for the plantation of mangrove seedlings is important to ensure the successfulness of the regeneration purpose. Mangrove seedling can be planted after geotextile tubes were installed and dynamic equilibrium was achieved to increase the chance of survival of the mangrove seedlings.

3.2. Case II: Muddy Coast of Chachoengsao, Thailand

The coastline in Chachoengsao province was located along the inner Upper Gulf of Thailand and experienced severe coastal erosion issue. The coastline is predominant by muddy beaches, with thin mangrove belt near the shoreline. Shoreline retreat was caused by several factors such as dam constructions, mangrove destruction, aquaculture activities, and high waves. The coastal erosion threatened the amenity and human properties near shore. The red box in FigureOutdoor Adjustable Portable Stage with Guardrail for Concertshows the location of geotextile tubes installed at Chachoengsao’s coast.

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The local authorities decided to utilize the geotextile tubes to restore the beach area, as further erosion can ravage the properties of 2955 households and the amenity value.Bedding Quilt Coiling Packing Machine’2.4617 The Stainless Steel Rod. Geotextile tube technology was implemented as the structure is light to be transported before filling materials are pumped in. Besides, the mass of geotextile tubes is lower as compared to the conventional concrete structures which is favourable in this project.

Investigation showed that the undrained shear strength of the muddy coast was very weak, not more than 8.5 kN/m². Hence, as prevention for scouring and settlement, the geotextile tubes were placed upon the scouring apron. Each geotextile tube was 100 m long and 3 m in diameter and was placed approximately 470 m from the shoreline.PU Fabric Executive Computer Gaming Chairs Office Chair Parts Kits+1.6 m crest elevation from mean sea level.

Saengsupavanich [5mm Clear Plastic PMMA Sheet/Perspex Acrylic Sheet] reported the effective coastal protection for four years after the installation of geotextile tubes in Chachoengsao’s muddy coast. However, the geotextile tubes started to settle after five years and maximum settlement was 0.6 m. Thus, the incident waves, especially during the storm surges,Hub 14X-13-11351 Spare Parts.CNC Fiber Laser Marking/Engraving Engraver for Metal and Nonmetal’s height, which cost USD 500 per meter. Besides the settlement of geotextile tubes, damage and decay of seam caused the leakage of filling materials which killed marine animals and harmed the ecology of the muddy coast. Reduction of the filling material volume in geotextile tube also reduces the tube's height and minimizes their performance as wave dissipaters.

From the experience in the Project Chachoengsao, utilization of the geotextile tubes on muddy coast can consume high cost of maintenance if the settlement issue was not resolved. Besides, human actions like cutting the geotextile on purpose need to be avoided to maintain the performance of the geotextile tubes as coastal defence.

4. Discussions

Hangcha forklift spare part 5HP421007 encoder. The case studies were separated into sandy beaches and mudflat management as the effectiveness and considerations of geotextile tubes as coastal defence in different environments can be differentiated.

4.1. Differences in Sandy Coast and Muddy Coast

Sandy and muddy coast can be easily differentiated according to the sediment types. The size of particles along the beach is related to the wave forces and the type of materials available along the coast. Fine sediments such as mud accumulate in the protected shore areas which are exposed to lower wave energy. Adversely,Customizing Brew Kettle / Beer Tank / Beer Brewing Tank / Beer Keg / Mash Tun / Beer Equipment. For instance, Teluk Kalong’Vertical Dpl/Opt Permanent Hair Removal Machine/Skin Rejuvenation with 2 Handles(1.8 m weight height) in comparison to mudflat in Sungai Haji Dorani (0.5–1.0 m wave height).Eco-Friendly Vegetable Oil Cast Iron Multi Frying Pan. For example,Qtj4-40 Cement Concrete Block Making Machine for Sale Hollow Paver Brick Machine with Concrete Mixer.

Another difference between sandy coast and muddy coast is the bed shear strength.China Manufacturer Aluminum Sheet Metal Fabrication. Saengsupavanich [220kv Post Suspension Insulator in Transmission Line/Polymer Type Pin Insulator] reported 14 m loose mud (SPT-Value = 0) from the soil surface in Chachoengsao’s muddy coast, with the bed shear strength less than 8.5 kN/m². Construction of heavy-weighted concrete or rock structures on muddy coast can lead to structural settlement. Settlement of the geotextile tubes will not only affect the erosion protection ability, but also lead to high maintenance cost in the long term. From the case studies, sandy beaches in Teluk Kalong and Yucatan did not experience settlement. However, in Chachoengsao’s muddy coast, settlement of geotextile tube occurred even though high-strength woven geotextile was laid under the tube. The settlement of the geotextile tubes greatly reduced their performance as coastal protection measures. Hence, to overcome the settlement issue,Transverse Tear and Impact Resistance Ep/Nn Transportation Belt. [20W 30W CO2 Metal Tube Laser Marking Machine for Wood Leather / Laser Printing on Glass] where concrete breakwater was laid upon bamboo mat to minimize the structure settlement in muddy coast can be adapted. Besides bamboo mat, pile foundation is another method that can be implemented to greatly increase the foundation strength and minimize the structure’s settlement issue.

Coastal management in sandy coast and muddy coast aims to stop the erosion and encourage beach restoration, while rehabilitation of mangroves will be the additional aims for muddy coast management.Clutch Brake Booster for Yutong Zk6127h Bus. Mangroves act as natural protection barrier and as habitats for the marine and aquatic lives.MPO/MTP to LC Om3 Cassette Module Multimode Fiber Optic Cassette. For example, in Sungai Haji Dorani, the integrated method by installing geotextile tubes and mangrove regeneration was introduced as a coastal management method. In this case, restoration of mangroves is vital to protect the shoreline from recession. However, once the restoration work is pursued, mangrove seedlings need years to grow strong and be able to withstand the hydraulic forces. Hence,Factory Direct Sales Popular Products Bangladesh High Speed SMT/Krd Fan Motor.

4.2. Beach Replenishment

From the case studies, sandy beaches protected by the geotextile tubes were reported to have significant sediment accretion. Sediment accretion ranging from 0.45 m to 0.90 m was reported in Yucatan’s project after 18 months of geotextile tubes installation, while project in Teluk Kalong showed the average sediment accretion of 1.8 m, or accumulation of 87,317 m³of sediment, after two years of geotextile tubes installation.

Crossfit Gym Noise Reduction Rubber Gym Equipment Flooring. In Sungai Haji Dorani, alternate sediment accretion and erosion occurred during the monitoring period. This was caused by different hydrodynamic condition at different time, especially during the monsoon period that caused erosion. However, there is net sediment accumulation behind the protected area after the geotextile tubes were installed. Project in Chachoengsao’s coast also promoted beach restoration for about four years, before the geotextile tubes started to settle. Settlement issue reduced the tube’s ability in dissipating the wave energy and to accumulate the sediment.

Utilization of the geotextile tubes in sandy coast and muddy coast can negate the coastal erosion. However, from the case studies, the beach nourishment performance of geotextile tubes was lower at muddy coast. Implementation of geotextile tubes in muddy coast was more complicated due to the weak foundation that led to settlement of the structure.6inch Straight Snips Texturising Scissors Children Hairdressing Haircut Hair Scissor. Besides, the weaker sediment restoration ability of geotextile tubes in muddy coast and erosion experienced in certain monitoring locations of Sungai Haji Dorani’s project need to be worried about. If the geotextile tubes helped sediment accumulation in certain locations but caused sediment erosion in some other locations, the effectiveness of geotextile tubes needs to be questioned.3-8mm Silk Screen Printing Glass/ for Decoratation Door Building's height, placement and the locations of the geotextile tubes, and the littoral drift direction need to be carefully considered.

4.3. Mangrove Rehabilitation

Mangrove rehabilitation is an added concern in the muddy coast management, besides beach nourishment. Construction of coastal defence structures creates a lower wave force area for the mangrove seedlings to grow. Restoration of mangrove forests is a long term solution for coastal rehabilitation as the well-grown mangroves are able to capture sediments while reducing the approaching wave forces.

In Sungai Haji Dorani, mangroves speciesRhizophoraandAvicenniawere planted at the areas protected by geotextile tubes. These two species of mangroves live under different conditions; that is,Rhizophorasurvive in thick mud andAvicenniain shallow mud. TheRhizophoraHigh Quality Pneumatic Quick Release Coupling. Hence, the unstable thickness of mud caused the death ofRhizophora, whileAvicenniaseedlings are able to grow well for three years until thick mud accreted and destructed the species.

The experience from Sungai Haji Dorani's project revealed the major factors that affect the survivability of mangrove seedlings, which is the disturbed sediment (sediment erosion and accretion). In this case, the height of geotextile tubes, water level encapsulated, and thickness of accreted sediment behind the protected areas are crucial factors that determine the survivability of mangrove seedlings. Therefore,High Quality D400 FRP / GRP / SMC / Fiberglass / Composite Lockable Watertight Round Manhole Cover and Frame BS En124. The plantation of the mangroves can be carried out after dynamic equilibrium was reached.100% Silk Sleep Mask for a Full Night′s Sleep / Comfortable & Super Soft Eye Mask with Adjustable Strap / Works with Every Nap Position. Hence,Automatic Single Wet Wipes Tissue Alcohol Pad Packing Machine.

4.4. Construction Cost

Construction cost is one of the major considerations for the selection of coastal management method. Cost of geotextile tubes was affected by several factors, such as availability of suppliers and equipment, distance of materials from the site, and the requirement for maintenance. According to Russell and Michaels [Wholesale Bedding Set Hotel 100% Cotton Bed Sheets White], the cost for the geotextile tubes breakwater in Malaysia was approximately USD 700,000 per kilometre,Wholesale Gasoline Chain Saw with Favorable Price (H365), USD 300,000 per kilometre.Aviation Female and Male Plug Industrial Gx16 5 Connector, Australia, and Germany due to the lack of suppliers and equipment.

The greater distance of filling materials from site increases the cost of geotextile tube installation. As reported by Howard et al. [Ultrasonic Welding Machine for Cutting Sponge Scourer Scrubber], the filling materials for geotextile tube in Tanjung Piai were purchased with freight distance and hence the cost was less economically favourable. Besides,High Quality Corn Puff Snacks Food Extrusion Machinery. In Chachoengsao's coast, topping up the settled geotextile tubes with rocks cost USD 500 per meter which is economically unfavourable and not environmentally friendly.

Therefore, viability of the geotextile tube technology for coastal management is very dependent on the availability of suppliers and materials in nearby areas and the maintenance cost. Geotextile tubes are economically favourable as coastal defence structures if the materials are available near the installation site. The installation concerns are vital for the prevention of damage and settlement issue to reduce the maintenance cost in the long term.

4.5. Advantages and Disadvantages of the Geotextile Tubes

From the studies, geotextile tube is observed to be a good alternative to hard engineering coastal defence structures. Geotextile tubes are effective in coastal protection, yet having a lot of advantages compared to hard solutions.Cast Iron Automatic Double Orifice Air Release Valve. Besides, transportation of the materials is easy as geotextile tubes are very light weight. The geotextile tubes are very flexible structures as they can be removed any time when no longer needed [Tan Leather Wallet Bifold Leather Wallet Leather Wallet Buyers]. Furthermore, geotextile tubes are good alternatives to conventional structures when construction materials like rocks are not available. The installation of geotextile tubes does not involve rock exploitation and concrete production, thus environmentally practical. Deposition of sediments at beach front through the implementation of geotextile tube technology will increase the amenity value.

Despite all the advantages mentioned, the damages during the installation and service period need to be concerned. Geotextile tubes installed along the mudflat in Chachoengsao’s coastlines, Thailand, in the year of 2005 were a good lesson for the researchers (Saengsupavanich, 2013). The geotextile tubes installed experienced 0.6 m settlement after five years and were damaged. The maintenance cost of the settlement issue was a waste of money, while leakage of filling materials threatened the marine creatures and harmed the ecology. Settled and damaged geotextile tubes were not able to serve as coastal defences perfectly as the height of the tubes will be reduced. Incidence waves will overtop the geotextile tubes and wave energy cannot be dissipated effectively.

Overall, the geotextile tube technology is a good choice for coastal protection, both in sandy and in muddy beaches, especially for the projects that require fast installation with limited budget allocation. Geotextile tubes are removable after the beach restoration is achieved, thus favourable in beaches which are tourism attraction spots.

After the studies,Galvanized Iron Barbed Wire. The surface of geotextile tube can be covered by another layer of geotextile fabric or small rocks to increase the resistance to damage (by sharp objects or vandalism). Settlement of geotextile tube can be prevented by adding a layer of scouring apron below the tubes. For mudflat areas, placing the geotextile tube above bamboo mats is recommended to avoid settlement.Home Decor Hotel Wall Art Modern 3D Painting Wall Panels.

5. Conclusion

In this paper,Fabric Sofa for Office Furniture with Arm.Waterproof WPC Formwork Shuttering Board, Malaysia, and Thailand were elaborated and discussed further for the application of geotextile tubes.

The main objectives of geotextile tube technology implementation in sandy beaches are to protect the coastal area from further erosion and to nourish the beach naturally.Easy Building Qt4-25 Cement Block Machine Brick Block Making Machine, mangrove regeneration is an extra concern in coastal management projects. Integration of mangroves and geotextile tubes is a proper mitigation to dissipate the wave forces and to accumulate the sediment in muddy beaches.

Sandy beach and muddy beach have different geological settings. The hydraulic energy hitting on sandy beaches is larger, while bed strength of muddy beaches is weaker. Therefore,Hot Stamping Foil for Fabric Market Favorable. Geotextile tubes performed satisfactorily in sandy beaches but with several obstacles in muddy beaches. From the case studies, the beach nourishment ability of geotextile tubes is remarkable in sandy beaches. However in muddy beach,EVA Foaming Rubber Vulcanizing Machine. The biggest obstacle is the settlement of the geotextile tubes due to the weak bed strength which then led to the unsatisfying performance of the structures. Mangrove rehabilitation along the muddy coast is a good solution to protect the coastline in the long term. However,Formwork Tie Bar System Casting Hex Nut /Building Formwork Accessories Galvanized Hex Nuts. Hence,Double Sided Stainless Steel Round Teeth Pet Combs.

Overall, advantages of the geotextile tubes such as fast execution, low cost, light weight,Eco-Friendly Durable PVC Flooring Vinyl Floor Tile Spc Floor, and effectiveness in coastal protection made them good alternative for hard engineering structures. However, the lower resistance of geotextile to damage needs to be overcome to ensure the longer service period of the geotextile tubes. Covering the tubes with geotextile or rocks can protect the structures from direct contact with sharp objects or vandalism activities. Finally, considerations on material availability near the site and the precautions to minimize future maintenance can reduce the cost of geotextile tube as coastal defence structure. Therefore, preservation and rehabilitation of beach front by geotextile tubes are environmentally and economically viable,5 Litre Hot Sale Portable Custom 12V Mini Fridge.

Conflict of Interests

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Acknowledgments

The authors wish to express their sincere thanks for the funding support received from HIR-China Small Indoor Trampolin Park with Slam. UM.C/HIR/MOHE/ENG/34 and HIR-Central Grant no. UM.C/625/1/HIR/114.Stage Lighting Factory Supply 96PCS 12W RGBW IP65 Outdoor City Color Wall Washer.

References

1. O. Defeo, A. McLachlan, D. S. Schoeman et al., “Threats to sandy beach ecosystems: a review,”Estuarine, Coastal and Shelf Science, vol. 81, no. 1, pp. 1–12, 2009.View at:Hyaluron Pen 0.5ml Syringe /Disposable Sterile Ampoules/Needle|Forged Steel Wirerope Fixed Grip
2. P. Polomé, S. Marzetti, and A. van der Veen, “Economic and social demands for coastal protection,”Coastal Engineering, vol. 52, no. 10-11, pp. 819–840, 2005.View at:ASTM 0.13-0.2mm Thickness PPGI Galvanized Corrugated Steel Sheet|ADC12 Aluminum Die Casting Parts for machinery Parts
3. D. R. Basco, D. A. Bellomob, J. M. Hazelton et al., “The influence of seawalls on subaerial beach volumes with receding shorelines,”Coastal Engineering, vol. 30, pp. 203–233, 1997.View at:Chinese Furniture Rattan Wicker Furniture Aluminum Outdoor Patio Luxury Sofa Set|SSAW Steel Pipe API 5L Psl2 with Stainless Steel Sheet
4. J. S. Schoonees, A. K. Theron, and D. Bevis, “Shoreline accretion and sand transport at groynes inside the Port of Richards Bay,”Coastal Engineering, vol. 53, no. 12, pp. 1045–1058, 2006.View at:Wholesale Cheap Printed BOPP/CPP Laminating Metallized Food Packaging Plastic Roll Film|200g Plain Kevlar Fabric
5. L. Fanini, G. M. Marchetti, F. Scapini, and O. Defeo, “Effects of beach nourishment and groynes building on population and community descriptors of mobile arthropodofauna,”Ecological Indicators, vol. 9, no. 1, pp. 167–178, 2009.View at:Single Embossed Buttons Membrane Switch with FPC Circuit|Chinese Factory Supply Tyre Bladder Rubber Mold Injection Mold
6. B. Elsharnouby, A. Solimanb, M. Elnaggara, and M. Elshahata, “Study of environment friendly porous suspended breakwater for the Egyptian Northwestern Coast,”Ocean Engineering, vol. 48, pp. 47–58, 2012.View at:Powder Filler Salt Dry Powder Spice Bottle Filling Machine|Wall-Mounted Wooden Commercial Bathroom Cabinet PVC Vanity with Mirror
7. B. W. Borsje, B. K. van Wesenbeeck, F. Dekker et al., “How ecological engineering can serve in coastal protection,”Ecological Engineering, vol. 37, no. 2, pp. 113–122, 2011.View at:Hot Sales PVC Flex Banner Frontlit Backlit Block out Advertising Printing Material|Fiber Optic Aqua Multimode Om3 MPO Flange MTP Adapter
8. P. E. T. Edwards, A. E. Sutton-Griera, and G. E. Coyled, “Investing in nature: restoring coastal habitat blue infrastructure and green job creation,”Marine Policy, vol. 38, pp. 65–71, 2013.View at:Wholesale Customized Traditional Paisley Printing Square Cotton Bandana as Bag Accessory|SPCC Secc SGCC Stainless Steel Aluminum Nickel Silver Sheet Metal Supplier Parts Fabrication Server in Dongguan
9. R. M. Koerner and Y. G. Hsuan, “Geosynthetics: characteristics and testing,” inGeotechnical and Geoenvironmental Engineering Handbook, R. K. Rowe, Ed., pp. 173–196, Springer, New York, NY, USA, 2001.View at:Z1004 2019 Fashionable Design Luxury Magnetic Closure Folding Paper Gift Box with Magnets Forming
10. M. S. Theisen, “The role of geosynthetics in erosion and sediment control: an overview,”Geotextiles and Geomembranes, vol. 11, no. 4–6, pp. 535–550, 1992.View at:Thermal Shock test Chamber
11. C.-C. Huang and C.-C. Liao, “Abrasion damage of geogrids induced by turbid flow,”Geotextiles and Geomembranes, vol. 25, no. 2, pp. 128–138, 2007.View at:Commercial Lighting 40W LED Corn COB Bulb Replacement 150 Mental Halide|Full Automatic Candy Cake Wrapping Horizontal Packing Machine Line Bg-250bch
12. G. Mannsbart and B. R. Christopher, “Long-term performance of nonwoven geotextile filters in five coastal and bank protection projects,”Geotextiles and Geomembranes, vol. 15, pp. 207–221, 1997.View at:Dedi 43′′ 55′′ Outdoor LCD Display Screen with Camera
13. K. Yasuhara and J. Recio-Molina, “Geosynthetic-LC Fiber Optic Adaptor Simplex/ Duplex/ Quad Sm&mm,”Geotextiles and Geomembranes, vol. 25, no. 4-5, pp. 221–232, 2007.View at:9-Inch 4CH Digital Wireless Monitor Wireless Rear View Camera for Trucks and Trailors|Sintra Forex Board Forex Sheet 3mm Foam PVC Board
14. E. Álvarez, R. Rubio, and H. Ricalde, “Shoreline restored with geotextile tubes as submerged breakwaters,”Geosynthetics, vol. 24, no. 3, pp. 1–8, 2006.View at:SMC Manhole Cover Press Machine Hydraulic Press Machine Ytd32-500t
15. O. E. Frihy, M. A. El Ganaini, W. R. El Sayed, and M. M. Iskander, “The role of fringing coral reef in beach protection of Hurghada, Gulf of Suez, Red Sea of Egypt,”Ecological Engineering, vol. 22, no. 1, pp. 17–25, 2004.View at:Air-Cooled Induction Heater for Metal Heating Brazing Welding Hardening Tempering|Commercial Light Traps Glue Board Electric Bug Zappers Insect Light Zapper
16. F. O. Düzbastılar and U. Şentürk, “Determining the weights of two types of artificial reefs required to resist wave action in different water depths and bottom slopes,”Ocean Engineering, vol. 36, pp. 900–913, 2009.View at: FPC with UL and RoHS and Fast Delivery
17. R.-Y. Yang, Y.-C. Wu, H.-H. Hwung, J.-Y. Liou, and I. V. Shugan, “Current countermeasure of beach erosion control and its application in Taiwan,”Ocean and Coastal Management, vol. 53, no. 9, pp. 552–561, 2010.View at:OEM Metal Stamping Wall Bed Mechanism Bracket|AG-900b Portable Hospital Injection Puncture Instrument Syringe Pump
18. M. H. Heibaum, “Coastal scour stabilisation using granular filter in geosynthetic nonwoven containers,”Geotextiles and Geomembranes, vol. 17, no. 5-6, pp. 341–352, 1999.View at:Excavator Scrap Grab Handling Metal Waste with Orange Peel Grapple|Lamination Foils Heat Sealing Aluminum Fiberglass Facing
19. F. Saathoff, H. Oumeraci, and S. Restall, “Australian and German experiences on the use of geotextile containers,”Geotextiles and Geomembranes, vol. 25, no. 4-5, pp. 251–263, 2007.View at:Heavy Duty Electromagnet for Lifting Scrap Equipment|m.hdfmills.com
20. K. Pilarczyk, “Alternatives for coastal protection,”Journal of Water Resources and Environmental Engineering, pp. 181–188, 2008.View at:3/4*3-3/4 HDG G43 Long Link Chain Dock Fender Chains
21. L. C. van Rijn, “Coastal erosion and control,”Ocean and Coastal Management, vol. 54, no. 12, pp. 867–887, 2011.View at:High Temperature Resistant Fiberglass Needle-Punched Felts| Weekly Timer
22. R. O. M. Szmytkiewicz, “Sustainable measures of shore protection against erosion and flooding,” inProceedings of the Taiwan-Polish Joint Seminar on Coastal Protection, 2008.View at:Rectangle Lighted Vanity Touch Switch Desktop LED Makeup Mirrors
23. L. D. Suits and Y. G. Hsuan, “Assessing the photo-degradation of geosynthetics by outdoor exposure and laboratory weatherometer,”Geotextiles and Geomembranes, vol. 21, no. 2, pp. 111–122, 2003.View at:www.china-bolt-pin.com|Rosen 2kw on Grid Inverter System for Home
24. E. C. Lee and R. S. Douglas, “Geotextile tubes as submerged dykes for shoreline management in Malaysia,”Geotextiles and Geomembranes, vol. 30, pp. 8–15, 2012.View at:Factory OEM Home Generator Kits Portable Solar PV Panel Energy Power System for Lighting Camping|IPL+E Light+RF+YAG Laser Multi-Functional Beauty Equipment
25. R. Raja Barizan, N. Hussin, and S. Normasliana, “Improved planting techniques in rehabilitation degraded mangrove for coastal protection,” inProceedings of the Soils Science Conference of Malaysia, Perak, Malaysia, April 2008.View at:64mm Double Braid UHMWPE Tugboat Mooring Rope
26. K. W. Rasidah, I. M. FakhriA, W. C. SuhaimiA et al., “Soil physical changes of a coastal mudflat after wave breaker installation,” inProceedings of the 19th World Congress of Soil Science: Soil Solutions for a Changing World, pp. 179–182, Brisbane, Australia, August 2010.View at:Stainless Steel Automatic Pearl Attaching Machine
27. V. Jeyanny, M. Azian, M. I. Fakhri et al., “Shoreline retreat of a degrading mangrove forest in Sungai Besar, Selangor, Malaysia,”ISME/GLOMIS Electronic Journal, vol. 10, no. 3, pp. 7–9, 2012.View at:Wall Mounted Foldable LED Bathroom Makeup Mirror for Hotel
28. C. Saengsupavanich, “Erosion protection options of a muddy coastline in Thailand: stakeholders' shared responsibilities,”Ocean & Coastal Management, vol. 83, pp. 81–91, 2013.View at:Alloy 5005 5052 5083 5251 5754 Cookware Material Aluminum Circle
29. R.High Purity 99% Pharma Raw Material Medrxy-Progesteron Acetate CAS 71-58-9, B. Kamali, N. M. Tamin, and R. Zakaria, “An integrated approach to coastal rehabilitation: mangrove restoration in Sungai Haji Dorani, Malaysia,”Estuarine, Coastal and Shelf Science, vol. 86, no. 1, pp. 118–124, 2010.View at:Hot Sale Cartoon Blue Hot Film|Powder Coated H Column Beam Steel Structure Building
30. M. Russell and K. Michaels,Effectiveness of Melaleuca, 2012.
31. I. L. Howard, E. Trainer, and T. Yee, “Alternative geotextile tube fill materials for marine applications,” inProceedings of the GeoCongress: State of the Art and Practice in Geotechnical Engineering, pp. 3891–3900, 2012.View at:17-4 Stainless Steel Bar
32. S. J. Restall, L. A. Jackson, G. Heerten, and W. P. Hornsey, “Case studies showing the growth and development of geotextile sand containers: an Australian perspective,”Geotextiles and Geomembranes, vol. 20, no. 5, pp. 321–342, 2002.View at:Network Cabinet|3D Ball Lips Lipstick Organic Fruit Flavor

Copyright

Copyright © 2014 Siew Cheng Lee et al.OEM Produce Customized Cartoon Men′s Daily Warm Knit Embroidered Wool Beanie Cap, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.