GEOTECHNICAL ASSESSMENT AND SUSTAINABLE ENGINEERING SOLUTIONS FOR LANDSLIDE MITIGATION AT BAU TRANG LAKE, LAM DONG, VIETNAM

Thi Mai Suong Nguyen, Ngoc Thinh Pham, Van Phu Dang, Xuan Bao Le, Van Doan Truong, Ngoc Thanh Le

Abstract


Introduction. This study assesses the landslide and proposes appropriate measures to safeguard the lake system along the Bau Trang shoreline, a well-known ecotourism destination in Binh Thuan province (now part of Lam Dong province), Vietnam. The area is threatened by shoreline landslips caused by both natural hazards and human activity. Methods. The methodology employed topographic and geomorphological geotechnical techniques, remote sensing, and Geographic Information Systems (GIS), using Geo‑studio models. Results. The findings indicate that sections of the lakeshore with low safety factors are particularly vulnerable due to the reservoir’s fluctuating water level, vibrations, and the movement of cruise ships. To improve lakeshore stability, various technical solutions were proposed, including live load reduction plates, geotechnical textiles, reinforced concrete (RC) sheet piles, Melaleuca (Cajuput) timber piles, and sandbag revetments. These measures are expected to not only ensure the safety of the lakeshore but also protect the ecosystem and environment, supporting the need to preserve this outstanding natural and scenic location.

Keywords


lakeshore erosion; landslide mitigation; geotechnical stability; Geo-studio; Bau Trang lake; sustainable engineering; eco-tourism.

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