摘要
在土石坝坝体防渗中,土工膜有时作为一种防渗材料铺设在坝体的上游坡中,以保护坝体的安全运行。在试验基础之上,分析坝体垫层料与复合土工膜的剪切特性,并结合一座建在深厚覆盖层上的复合土工膜防渗土石坝,采用FLAC3D对坝体复合土工膜防渗体进行抗滑稳定性分析,在分析中考虑坝体孔隙水压力和坝体垫层料与复合土工膜的剪切特性对复合土工膜防渗体抗滑稳定性的影响。研究表明:在现有可能不利条件下,该坝体复合土工膜防渗体的抗滑稳定性均在合理可控范围之内,大坝结构安全能够满足要求。
In seepage preventing of dams,geomembranes were commonly used to prevent seepage on the upstream side of dam slope so as to protect the safety of dam.Based on experimental test,analysis of stability against sliding of dam with composite geomembrane by using the finite-difference method was carried out.Through the pore water pressure of dam and the shear characteristics between composite geomembrane and coarse-grained materials of dam,analyzed the influences of stability against sliding of dam composite geomembrane impervious body.The results showed that stability against sliding of composite geomembrane impervious body is in reasonable range,the dam is safe and can totally satisfy the request.
出处
《水资源与水工程学报》
2010年第6期15-18,共4页
Journal of Water Resources and Water Engineering
基金
高等学校博士点专项科研基金资助课题(200807580007)
新疆水利水电工程重点学科基金资助项目(xjzdxk-2002-10-05)资助
关键词
土石坝
复合土工膜
剪切特性
孔隙水压力
抗滑稳定
earth-rockfill dam
composite geomembrane
shear characteristics
pore water pressure
stability against sliding
