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库岸高填方路堤的稳定性受库水位涨落影响较大,同时,采用不同的土水特征曲线,边坡的稳定性计算结果也不相同。计算了当边坡土体的饱和含水量、饱和渗透系数相同时,3种不同的土水特征曲线对应的边坡安全系数,并得到了以下结论:土水特征曲线对考虑非饱和特性的土质边坡安全系数影响较大;采用黏土土水特征曲线计算出的边坡安全系数较粉土和砂类土质大;水位下降时,采用砂类土的土水特征曲线计算出的安全系数降低值较大;一般情况下计算非饱和特性的边坡稳定性时应选取合理的土水特征曲线。
The stability of bank embankment with high embankment is greatly affected by the fluctuation of reservoir water level. Meanwhile, different soil-water characteristic curves are used, and the calculation results of slope stability are not the same. The slope safety factors corresponding to three different soil-water characteristic curves are calculated when the saturated soil moisture content and saturated permeability coefficient are the same, and the following conclusions are obtained: the soil-water characteristic curve is not suitable for considering the soil with unsaturated characteristics The safety factor of slope is more affected; the safety factor of slope calculated by the clay-soil water characteristic curve is larger than that of silt and sand soil; when the water level declines, the safety factor calculated by the soil- In general, reasonable soil-water characteristic curve should be selected when calculating slope stability of unsaturated soil.