天子岗水库坝基土分散性试验研究  

Experimental study on dispersivity of dam foundation soil in Tianzigang Reservoir

作　　者：陈式华[1] 何耀辉[1] 陈卫芳[1] 

机构地区：[1]浙江省水利河口研究院,浙江杭州310020

出　　处：《浙江水利科技》2007年第5期7-8,共2页Zhejiang Hydrotechnics

摘　　要：分散性黏土具有容易被雨水淋蚀产生冲蚀孔洞和被渗流水冲蚀出现管涌破坏的特性。通过对天子岗水库坝基土层的分散性试验，来评价坝基是否产生渗流水冲蚀出现管涌破坏。试验结果表明，天子岗水库主坝在桩号0＋500—0＋840m之间的坝基土中，有分散性或过渡性的黏土，存在着渗流隐患，需要进行工程处理。The dispersion clay is easy to be induced scour boles caused by rain and piping failure by seepage water. Through the dispersion test of dam foundation soil in Tianzigang Reservoir, the possibility of piping failureby seepage water has been appraised. The result shows that the hidden danger of seepage exists in dispersion clayor transition clay between the dam foundation soil of pile numbers 0＋ 500-0＋ 840 m and it requires to be treated.

关 键 词：分散性黏土 碎块试验 针孔试验 双比重计试验 

分 类 号：TU41[建筑科学—岩土工程]