张峰水库粘土斜心墙堆石坝反滤层渗透稳定性探讨

结合山西省张峰水库工程粘土斜心墙堆石坝关键性反滤层计算分析与试验工作,探讨了粘土斜心墙堆石坝反滤层设计及其渗透稳定性验证的方法。研究表明:关键性反滤层是粘土斜心墙坝的生命线,在设计中除了通过计算分析初步确定反滤层的级配曲线和控制密度以外,还需要特别重视反滤层渗透稳定性的试验验证,以确保大坝的安全。

Discussion on seepage stability of filter layer in rock-fill dam with sloping clay core of Zhangfeng Reservoir

Based on the related calculation and experiment on the key filter layer in the rock-fill dam with sloping clay core of Zhangfeng Reservoir,the methods for the design of the filter layer of the dam and the examination on its seepage stability are discussed herein.The study shows that the key filter layer is the lifeline of rock-fill dam with sloping clay core,and then not only the gradation curve and control density are to be preliminarily determined through the related calculation,but particular attention must also be paid to the experimental examination on the seepage stability of the filter layer,so as to ensure the safety of the dam.