岩土力学2011，Vol.32Issue(6)：1774-1780,7.
库水位升降作用下大型堆积体边坡变形破坏预测
Prediction of deformation and failure of a large-scale deposit slope during reservoir water level fluctuation
摘要
Abstract
Research on deformation and stability of reservoir bank slopes is one of the focus in the world.Taking a deposit slope in the hydropower reservoir area for example.the deformation and failure characteristics of the slope are predicted by FLAC3D while the reservoir level is rising and rapid drawdown.It is indicated that deformation mainly occurred in the deposit body while the reservoir level fluctuating; the deposit body is divided into three regions according to the deformation characteristics: the front traction deformation area with the largest deformation, the middle transition area with the smallest deformation and the posterior passive traction deformation area.Displacement monitoring points are set at different places of the slope body; so the displacement-time graphs during reservoir filling and rapid drawdown of reservoir level are obtained.The monitoring results show that the local instability occurred at the front of the slope dunng the rapid drawdown of the reservoir level.Owing to the influence of water two potential sliding failure surfaces in slope can be judged based on the shear strain increment.关键词
库水升降/堆积体边坡/应变软化/牵引变形区/破坏模式/局部失稳Key words
reservoir filling and rapid drawdown/ deposit slope/ traction deformation area/ failure mode/ local instability分类
建筑与水利引用本文复制引用
董金玉,杨继红,孙文怀,黄志全,王东,杨国香..库水位升降作用下大型堆积体边坡变形破坏预测[J].岩土力学,2011,32(6):1774-1780,7.基金项目
华北水利水电学院高层次人才引进项目资助(No.201105) （No.201105）
中国科学院工程地质力学重点实验室开放基金项目资助(No.2008-06) （No.2008-06）
教育部留学回国人员科研启动基金资助(2010年). （2010年）
