复杂水力条件下的坝坡渗流及稳定性分析

针对库水位变化和降雨会使坝坡稳定性分析更为复杂的问题，基于非饱和渗流理论，借助GEO STUDIO软件对某土石坝进行数值模拟，研究了该坝在水位骤升、水位骤降及降雨情况下坝体内的渗流情 况，以极限平衡原理和MorgensternPrice条分法为基础分析了坝坡产生滑移的最小安全系数变化规律 。结果表明，复杂水力条件下不利于坝坡的稳定性，且坝坡安全系数变化呈现出一定的规律性。

Seepage and Dam Slope Stability Analysis under Complex Hydraulic Conditions

Reservoir water changing and rainfall will make dam slope stability analysis become more complicated. Based on the theory of unsaturated seepage, numerical simulation of earth rockfill dam is implemented by using GEO STUDIO software. Under the conditions of sudden rising of reservoir water level, sudden drawdown of reservoir water level and rainfall, seepage behaviors of the dam body are discussed. Regularity of the minimum safety factor for dam slope sliding is discussed by applying limit equilibrium theory and Morgenstern Price slice method. The results show that it is unfavorable to the dam slope stability under the complex hydraulic conditions, and the dam slope safety factor has certain regularity.