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通过建立西霞院反调节水库土石坝段三维有限元模型,模拟坝体和坝基防渗系统、下游排水系统、坝基地层等。首先,对比分析三维有限元法计算得到的渗流场结果与实际监测数据,验证了计算模型的可靠性和模拟计算结果的合理性,再利用三维有限元方法对正常蓄水位、设计洪水位和校核洪水位工况下坝体、坝基的渗流总水头、压力水头、渗透坡降、溢出坡降及渗流量进行计算分析,验证了坝体和坝基防渗排水措施的合理性。
Through the establishment of the three-dimensional finite element model of the anti-regulation reservoir embankment in Xixiayuan, the seepage control system of the dam body and the dam foundation, the drainage system in the downstream and the foundation of the dam foundation are simulated. Firstly, the results of seepage field and actual monitoring data calculated by 3D finite element method are comparatively analyzed, the reliability of the calculation model and the rationality of the simulation results are verified, and then the three-dimensional finite element method is used to analyze the relationship between normal water level, Under the condition of flood level, the seepage head, pressure head, seepage slope, overflow slope and seepage volume of dam body and dam foundation are calculated and analyzed, which proves the rationality of seepage prevention and drainage measures of dam body and dam foundation.