三峡库区渝巴公路马道子滑坡岸段动态风险评价

水库区公路岸坡属大型线性工程,其灾害评价主要涉及沿线两侧一定宽度范围,总体呈线状或条带状;库水升降及降雨作用,可引起岸坡地下水位的波动,从而导致岸坡稳定性的变化,这一过程是一个动态变化过程;基于以上认识,以三峡库区渝巴公路马道子滑坡段为例,根据线性工程风险评价的特点,采用地下水浸润线简化求解公式,并按照滑坡动态稳定性的理念,对该公路岸坡段的动态风险进行了初步评价,并对治理必要性进行了分析,结果与实际相符。

Dynamic Risk Evaluation about Madaozi Landslide's Bank Slope of Yu-Ba Highway in Three Gorges Area

The highway bank slope belongs to great linear engineering and its disaster analysis mainly involved some width of both sides along the line.In general it is line shape or ribbon.In addition,the reservoir water level,which will be up and down,and rainfall can lead the groundwater level fluctuation,and then it will result in the stability changing.The process is a dynamic change course.Based on above cognitions,this paper,according to the characteristic of risk evaluation to linear engineering,takes Madaozi landslide's bank slope of reservoir area of Three Gorges as example to preliminarily evaluated dynamic risk of the highway bank slope section by adopting the simplified formula of groundwater saturation line and following the truth of landslide dynamic stability.Then it also analyzes the necessity of landslide control.The results are fit with the fact.