Investigation on hydrodynamic and sediment transport in Quan Chanh Bo and Kenh Tat channels

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Abstract : *(250~1000 words)

Mekong River is a famous river in Vietnam with many benefits involving navigation, water demand, agriculture, aquaculture. Before flows into Vietnam, the Mekong river divided into two main distributaries called by Tien and Hau Rivers before poured into the Eastern Sea of Vietnam through nine dragon estuaries. The channel for large ships entering the Hau River was upgraded and completed on January 20, 2016 for vessel of 10,000 DWT full load and 20,000 DWT half-load entrance Can Tho Port which is located far from the Sea about 120 km. The new section of the channel from Dai An estuary to Quan Chanh Bo canal and then to Kenh Tat has a total length of 23.9 km. Kenh Tat channel has 7.7 km length is a new dredging channel connect the navigation channel in Quan Chanh Bo channel to the sea. In the sea, a harbour basin was built and protected by one breakwater in the north and a jetty in the south. In this study, a larger scale of two-dimension couple model which includes the entire Tran De estuary, Dinh An estuary, Cung Hau estuary, Co Chien estuary and new estuary of Kenh Tat channel was established, calibrated and verified based on the observation data. The simulation results indicated that the hydrodynamic regime and cohesive sediment transport in the Quan Chanh Bo and Kenh Tat channels depend on the tidal and river flows in both of Dinh An and Kenh Tat estuaries. The current at Dai An branch mainly depend on the tidal current in Dinh An estuary. However, the current in Kenh Tat channel controlled by the flow from Cung Hau estuary.

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PIANC Smart Rivers 2022

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