浅析地下水对崩岗形成的作用

Simple analysis on the groundwater function to collapse hill

北海市滨海平原沿海及河流中下游坡岸崩岗遍布 ,介绍了崩岗形成的水文地质条件 ,指出崩岗是由粘性较弱、内聚力小、抗蚀力差的粘土质砂、粘土质砾砂、砾砂 (粗砂 )、粘土组成的以及由这些地层组合的潜水含水层 ,为地下水对崩岗形成的作用创造了条件 ;随后利用洛巴索夫图解法公式和《工程地质手册》介绍发生潜蚀的条件分别分析了崩岗上部土体塌落的原因和地下水发生潜蚀的可能性 ;最后提出把种植杂交撑高竹作为治理崩岗的主要对策。

The collapse hill which looks like the landscape of “the yellow plateau”,is very popular in the seaside plain and the middle and lower river reaches of the river in Beihai city.This paper introduced the hydro_geological condition of forming the collapse hill and pointed out its rock characteristic that create circumstance for collapse. hill Applying the Robasef diagram and the handbook of the engineering geology, the anthor analyzed the cause of the upper_soil crumble and the possibility of the groundwater erosion. At the end, planting hybrid bamboo is proposed for dealing with the collapse hill.