大坝渗流监测变化规律及特征分布

Analysis on the Change Law and Characteristic Distribution of Dam Seepage Monitoring

选取某土石坝进行渗流监测资料分析。根据注水试验,讨论大坝观测设施的有效性,定性分析了大坝渗流场分布特征;结合现场检查,深入分析大坝运行情况。分析结果表明,坝体下游部位存在渗流通道,并发生渗透破坏,排水棱体失效,导致渗流压力升高。

In this paper, seepage monitoring data of an earth-rock dam are analyzed. According to the water injection test, the validity of dam observation facilities is discussed, the distribution characteristics of seepage field are qualitatively analyzed, and the operation of the dam is thoroughly analyzed combined with field inspection. The analysis results show that seepage channel exists in the downstream part of the dam body, and seepage failure occurs, which results in the failure of drainage prism and the increase of seepage pressure.