Analysis Instability of the Riverbank: A Case Study of Tien Riverbank in Cai Be District, Tien Giang Province, Vietnam

Abstract

Tien riverbank in Cai Be district, Tien Giang province has quite a complex geological structure and human activities, so the riverbanks are frequently instability. The article refers to the instability of the Tien riverbank flowing through Cai Be district, Tien Giang Province. Based on the collected documents, analyzing remote sensing images, and field investigations, two types of riverbank instability with varying severity were identified. The main causes of instability are river flow erosion, influence of waves, geological factors, hydraulic pressure, sand depletion, and human activities. The selection of countermeasures against riverbank erosion in the study area should consider the soft soil ground structure along the riverbank, and the impact of horizontal waves casued by boat activities. Regarding the countermeasures for stability of riverbank, the method of pre-stressed piles exhibit a good solution against riverbank erosion. The research results are the basis for proposing effective prevention solutions to serve sustainable development along this river.