摘要
上江坝址属金沙江中游替代虎跳峡高坝方案的比选坝址之一,坝基覆盖层深厚,左坝肩分布巨型滑坡体,右岸分布巨型古倾倒变形体,河床覆盖层最深达206 m,坝基水文地质条件复杂。通过钻探及相关的水文地质测试等,基本查明了坝基覆盖层的水文地质条件,经研究坝基覆盖层多为透水岩组,均需要采取防渗封闭处理。主要对坝址区水文地质条件及其工程特性进行阐述和分析,及对大坝防渗依托层的选择及防渗措施进行探讨。
Shangjiang dam area is one of the ahemative dam area used to substitute for Hu Tiao-xia high dam. The overburden of Shangjiang dam base is deep and thick ,with a huge landslide at the left dam shoulder and huge old incline deformation body at the fight side. The deep of fiver bed cover reaches to 206 meters, and the hydrogeological characteristics is complex,which was investigated by drilling and hydrogeologic testing. The study showed that most of dam base overburden is permeable petrofabric and needs anti-seepage closed treatment. This article analyzed the hydrogeological and engineering characteristics of dam area, and discussed the selection of anti-seepage supporting layer and anti-seepage measurements.
出处
《资源环境与工程》
2009年第5期566-569,共4页
Resources Environment & Engineering
关键词
水文地质
深厚覆盖层
透水岩组
大坝防渗
上江坝址
hydrogeological characteristics
deep and thick overburden
permeable petrofabric
dam anti-seepage
Shangjiang dam area
