王洼水库主坝上游坡滑坡原因分析与处理对策

Cause Analysis on Landslide of Upstream Slope of Wangwa Reservoir Main-dam and Treatment

根据大坝安全鉴定、除险加固初步设计与施工,以及上游坡滑坡后的现场调查、变形监测、勘探试验等资料,结合上游坡稳定分析计算,对王洼水库主坝上游坡滑坡原因进行了分析,并提出了滑坡体挖除回填和坝轴线后移两种处理方案。施工最终采用了滑坡体挖除回填方案,目前已处理完成并投入运行,效果良好。

According to the dam safety appraisal, the initial design of reinforcement and construction , as well as the investigation at site, deformation monitoring, exploration testing information etc. after the landslide of the upstream slope happening, in combination with the slope stability analysis, the landslide causes of the upstream slope of the main dam were analyzed, and two treatment programs, i. e. , one was the landslide body to be removed and refilled, and the other was the dam-axis to be moved backward, were recommended to deal with the landslide. The former was adopted. The dam is running at present, and in perfect order.