![]() ![]() Sediment trapping, defined as the ratio between the volume of sediment housed into the salt marsh behind and away from the breakwater, was found to be less than 1 from most model runs. Shear stress at the beginning of the marsh and the volume of sediment deposited at the end of the simulation (into the marsh behind the breakwater) increased on average between 20–40%, proportional to the slope and distance of the breakwater from the shoreline. Model results suggested breakwaters were responsible for an average wave damping between 10–50%, proportional to the significant wave height across all modeled scenarios. Model configurations used the same numerical domain, but scenarios had different sediments, waves, tides, basin slopes and breakwater distances from the shoreline to explore how waves and tidal currents shape coastal margins. To address this gap, our study quantifies the effects of breakwaters on sediment transport and marsh evolution under different wave regimes using Delft3D-SWAN, a dynamic geomorphodynamic numerical model. Although common, their effects on sediment transport and marsh geomorphology are poorly understood. Breakwaters are a common feature along coastlines, which are used to dampen wave energy and protect shorelines from flash floods or overwash events. are interested by the tourism businesses to meet the needs of tourists.Human encroachment and development on coastlines have led to greater amounts of armoring of shorelines. In addition to renovating the beach, some types of recreation such as water canoes, paragliders, steam boats etc. ![]() Some types of combined entertainment after the project completed (Zing.vn) Mui Nai beach before and after the renovation Some pictures of the construction process:Ī / Positioning and spreading geotextile tube on the water surface b / Pumping sand into the geotextile tubeīuilding of stone breakwater to close the route + The auxiliary submerged breakwater route (430 m) for preventing sand is located parallel to the shore, 50 - 60 m far from the shoreline. The outside part comprises a rubble layer, 30cm thick, on a 10-cm thick crush stones (2x4) and a geotextile filter layer. ![]() + The Northern closure section is 60 m long, the Southern closure section is 80 m long, the structure uses geotube with a diameter of 1.6 m, padded with sand bags to form a slope m = 1.5. The sandy beach is divided into two parts: a berm at an elevation of + 0.8 m, average width 60 m (to the edge of the breakwater) a sloping part where sand was pumped to make a slope of 20% extending to the toe of the submerged structure. On the landward side of this breakwater, sand was pumped to nourish the beach. + The submerged breakwater, 380 m long, is formed by a geotextile tube (‘geotube’), 2.4 m in diameter. Location: Back Beach, Mui Nai tourist area, Phao Dai ward, Ha Tien city, Kien Giang province. Design consultant: Center for Marine Engineering & Port Development, Institute of Civil Engineering, Thuyloi University It is recorded that the number of visitors this year is much higher than the previous years. Every day, late in the afternoon, there are still quite a lot of tourists coming here to swim. Every week, tens of thousands of tourists choose Mui Nai beach as a place to visit and relax. Since summer in 2019 Mui Nai-Ha Tien Beach has become a new and attractive destination for visitors. Many tourists have expressed their surprise and excitement at the new appearance of the beach and wish that this place will continue to be interested and upgraded to become an ideal tourist destination. The muddy beach was replaced with fine white sand and the quality of water has also improved markedly. After being renovated, Mui Nai beach has put on a new apperance. However, in consultation with the Institute of Civil Engineering, Thuyloi University since 2018, Kien Giang province’s local authorities have implemented a plan to renovate it into a white sand beach with an investment of more than VND 100 billion. In previous years, this place did not attract visitors because it was alluvial beach with muddy sand and turbid water. Mui Nai beach of Kien Giang province is a popular tourist attraction.
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