Reserch on clarification of river bank erosion of Saigon River and proposal of its countermeasure

该项目的实施是为了明确西贡河的河岸侵蚀。首先设置了试验田，进行了SPT、土壤取样和一系列室内试验，以弄清试验田的地面剖面和土壤的基本力学特性。然后利用超声波测量仪ADCP对水位、流速分布和河床断面形状进行了观测。并对防治河岸侵蚀的对策进行了研究。首先考察了在越南利用普通材料制备优良改良土的条件。通过数值模拟研究了有效的加固对策。日越联合研讨会已举办四次，相互交流上述研究成果。

This project was carried out to make clear the bank erosion of Saigon River. At first some test fields were set and the SPT, soil sampling and a series of laboratory tests were conducted to clarify the ground profile and the basic mechanical properties of soils at the fields. Then the water level, the distribution of the flow velocities and the cross section shape of the river bed were observed by use of ADCP, a measurement device using ultrasonic wave.Reserch on countermeasure for prevention of river bank erosion was also carried out. Firstly some conditions to make good improved soil were investigated by using common materials in Vietnam. Next some numerical simulations were conducted to investigate the effective reinforcement countermeasure. The Japan/Vietnam joint-seminars were held four times to share the above reserch results each other.