库坝防渗加固技术及稳定性分析

Reservoir Seepage Control Reinforcement Technology and Stability Analysis

通过各种库坝防渗加固措施的应用范围和效果进行了比较分析,并选择冲抓套井回填粘土防渗墙方案进行了有限元计算,结果表明:库坝防渗加固之后,安全系数较处理之前有较大提高,稳定性得到了较大改善,且设计水位、校核水位下的渗透流量较未处理之前有明显下降,渗透坡降值满足规定要求。

Through comparison and analysis of the application range and effect of various reservoir seepage control measures,this paper carries out finite element calculation on the program of backfilled clay grabbing well impervious wall.It is shown that after seepage control reinforcement,safety factor of reservoir is largely improved and stability is also greatly improved.Seepage discharge below design level and verified level is significantly reduced after treatment.Seepage gradient satisfies the requirement.