摘要
水库蓄水将显著改变库岸的水文地质条件,进而影响滑坡的稳定状态。以鄂西南某水库为例,阐述了库水位对滑坡稳定性影响的一般规律,并采用剩余推力法计算分析了滑带土抗剪参数、库水位变化和地下水疏干系数对库岸滑坡的影响。在此基础上,对蓄水后库岸滑坡的变形模式进行了模拟分析。研究表明,水库蓄水不仅使滑坡稳定性发生变化,滑坡的变形模式也将由推移式转变为牵引式。
After water impounding, hydrogeological condition in the reservoir area varies obviously and landslide stability is affected. Taking a reservoir in Southwest Hubei for example, general law of influence of reservoir water level on landslide stability is discussed. By use of push method, anti-sheafing parameters, affection by water level variation and drainage factor is analyzed. Additionally, numerical simulation are adopted to analyze its sliding mode. It is showm that reservoir water impounding not noly influences landslide stability but also the failure mode, i.e.the that is to say, push mode will be substituted by drag mode.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2007年第12期2722-2725,共4页
Rock and Soil Mechanics
基金
湖北省教育厅中青年基金项目(No.Q200715002)
关键词
蓄水
库岸滑坡
稳定性
变形模式
water impounding
reservoir landslide
stability
deformation mode