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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-STU-DIO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。
Based on the theory of unsaturated seepage, the numerical simulation of an earth-rock dam with GEO-STU-DIO software is carried out to study the effect of water level rise and water level Dips and rainfalls in the dam body, the law of the minimum safety factor of the slippage of the dam slope is analyzed based on the principle of limit equilibrium and the Morgenstern-Price method. The results show that the stability of dam slope is not conducive to complex hydraulic conditions, and the slope safety factor shows a certain regularity.