基于原型监测的黏土心墙堆石坝渗流分析  

Seepage Analysis of Clay Core Dam Based on Prototype Monitoring

作　　者：陶丛丛[1] 陈宏伟[1] 孔松[1] 郭成[1] 

机构地区：[1]南瑞集团公司(国网电力科学研究院),南京211106

出　　处：《长江科学院院报》2017年第9期70-73,78,共5页Journal of Changjiang River Scientific Research Institute

摘　　要：某黏土心墙坝在蓄水期间,出现渗流量较大、坝体渗流、绕坝渗流增大等现象。为了寻找原因,通过对某黏土心墙坝的环境量、坝体渗流、绕坝渗流、渗流量等原型监测数据进行分析,得到渗流量、坝体坝基渗压、绕坝渗流等监测成果。为进一步分析渗流来源,对渗流量进行模型分析。结果表明:各监测成果互为印证,受库水位影响显著;库水位是影响渗流量大小及变化的主要因素,降雨量是次要因素,其中,库水位对渗流量的影响主要是通过两岸绕坝渗流,其次是通过坝体坝基渗流。库水位对渗流量的影响既是即时的又是持续的。Increases in seepage through dam body and clay core dam. In order to investigate into the causes, seepage around dam were found during the impoundment of a we carried out prototype monitoring on environmental parame- ters, seepage through and around dam, seepage pressure, as well as seepage amount, and obtained monitoring re- suits. To further analyze the seepage source, we conducted model test on seepage flow amount. Results revealed that all the factors are significantly affected by reservoir water level, which is a main cause of seepage amount change. Rainfall is a secondary cause. Reservoir water level mainly affects the seepage around dam, and then the seepage through dam foundation. The impact of reservoir water level is instantaneous and in the meantime steady.

关 键 词：原型监测 黏土心墙坝 坝体渗流 绕坝渗流 渗流量 

分 类 号：TV698.12[水利工程—水利水电工程]