土石围堰三维有限元渗流分析及防渗措施研究

Three-dimensional seepage analyses and seepage control measures for earth rockfill dam

为了解决上游围堰防渗及绕坝渗漏问题,确定最优防渗方案,对炳灵水电站右岸松动体防渗帷幕的防渗方案进行了三维有限元渗流计算,并对右岸松动体帷幕的防渗范围和灌浆排数进行了敏感性分析。通过多种防渗方案的计算,对右岸松动体的防渗方案做了相应优化,建议了满足设计要求的防渗方案。

For the sake of solving seepage control of the upper cofferdam and leakage around the dam and determining optimum anti - seepage scheme, it was proposed to executed the three - dimensional seepage calculation on impervious curtain of the loose body on left bank for Bingling hydropower project, and to make the sensitivity analyses of anti - seepage range and rows of grouting as well. By calculation of various anti - seepage schemes, relative optimization was performed for the loose body on right bank in the seepage control scheme. That has satisfied design requirements of seepage control.