三峡库水位变化对石榴树包滑坡安全性的影响研究

石榴树包滑坡为三峡库区黄腊石滑坡群的组成部分,为一复活性滑坡,三峡工程运行期库水位的升降变化可能会引起该坡体的失稳,从而影响长江航道的正常运行,甚至威胁三峡工程的安全.本文通过动态数值模拟计算,得到了三峡水库运行期各水位工况下石榴树包滑坡体的渗流场及其变化规律、抗滑稳定安全系数及其变化规律、变形特征,并通过综合比较分析,对三峡水库各水位工况下该滑坡体的安全性作出了综合评价,并给出了其重点监测时段及监测部位的建议.

tudy of Influence of Water Level Change in Three Gorges Reservoir on Shiliushubao Landslide Safety

Shiliushubao landslide is a part of the Huanglashi landslide in Three Gorges Reservoir region and it is a kind of renascent landslide. The water level＇s change of Three Gorges Reservoir may induce the unsta- bility of Shiliushubao landslide which will affect the normal operation of Yangtze River waterway, and even threaten the safety of Three Gorges Project. By the dynamic numerical simulation of every water level condi- tion of Three Gorges Reservoir＇s operation stage, the article obtains Shiliushubao landslide＇s seepage field and its variation, safety factor and its variation and deformation characteristics. Through the comparative analy- sis, the article gives the overall merit of this landslide＇s safety in every water level condition of Three Gorges Reservoir, and some suggestions about key monitoring period, monitoring sites.