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基于工程地质勘察资料和水文资料,结合工程实况引入等效渗流系数的概念,选取典型断面,对海子水库南副坝及坝基的渗流进行了有限元模拟计算,分析了正常蓄水位、设计洪水位、校核洪水位时渗流作用下的下游坝坡的稳定性,并对混凝土防渗墙深度对渗透量和稳定安全系数的影响进行了分析,得到海子水库南副坝可以加深防渗墙至55m,渗透量减少35%左右,并且防渗墙的加深对坝坡的稳定性还有一定的加强作用。
Based on the engineering geological survey data and hydrological data, the concept of equivalent seepage coefficient is introduced based on engineering practice. The typical section is selected to simulate the seepage of south secondary dam and dam foundation of Haizi Reservoir. The normal water level, design flood Bit, the stability of the downstream dam slope under seepage when the flood level is checked, and the influence of the depth of concrete cutoff wall on the infiltration and the stability safety factor are analyzed. The south secondary dam of Haizi reservoir can deepen the cutoff wall to 55m, the amount of permeation decreased by 35%, and the deepening of cutoff wall has some reinforcement effect on dam slope stability.