摘要
李家峡水电站坝前滑坡在蓄水前后一直处于活动状态,其危害是剧滑形成的坝前涌浪对大坝安全带来影响.本文通过对电站坝前滑坡体的勘察及变形监测资料分析,对滑坡的复活和蠕变特性进行了探讨,采用Sarma法对滑坡在水库蓄水前后的稳定性进行了计算和评价.认为:滑坡在水库运行期处于极限平衡和缓慢的蠕滑状态,整体失稳产生剧滑的可能性不大.这对李家峡工程后期处理和正常运行具有现实的指导意义.
The slide mass in front of the dam of the Lijiaxia hydropower plant has been in an unstable condition since the reservoir impounding. The impact waves caused by the acting forces of slide failure would exercise a great influence on the safety for the dam. The investigation of the slide mass in front of the dam and the analysis of observed data to obtain a more detailed understanding of its restoration and creep characteristics are discussed in this article. The computation and evaluation of the slide mass stability both before and after impounding using Sarma method were carried out. It was concluded that the slide mass would be in a state of limit equilibrium, and the creep during the period of reservoir exploitation and the opportunities of failure were considered to be insignificant. This will be of great importance for the normal operation of the project.
出处
《水利水电技术》
CSCD
北大核心
2004年第9期31-33,共3页
Water Resources and Hydropower Engineering
关键词
滑坡
蓄水
变形
稳定性
李家峡水电站
slide mass
impounding
deformation
stability
Lijiaxia hydropower plant
