水利水电技术2017，Vol.48Issue(4)：118-123,6.DOI:10.13928/j.cnki.wrahe.2017.04.022
三峡库区水位变幅对奉节何家坡滑坡稳定性影响分析
Analysis on impact from water level fluctuations of Three Gorges Reservoir on stability of Hejiapo Landside in Fengjie
摘要
Abstract
In order to better study the stability of Hejiapo Landslide in Fengjie under the increase of the drawdown amplitude of the reservoir water level,and predict and appraise the developing trend of it,the deformation mode and formation mechanism of Hejiapo Landslide are analyzed and the effect of the rapid drawdown of water level is considered through the in situ geological investigation and exploration.Furthermore,the simulation of seepage field and stability calculation for the landslide under the extreme operation condition of increase of the water level fluctuation are made with the finite element analysis software-GeoStudio.The study result shows that the deformation of Hejiapo Landslide is mainly concentrated at the front edge and the mid-part of the slope,which presents a step by step pull-deformation failure and is wholly under a basically stable status under the condition with the drawdown amplitude of the reservoir water level of 1.2 m/d.The stability coefficient of the landslide is lowered along with the increase of the rate of the drawdown of the reservoir water level,thus it belongs a typical landslide caused by hydrodynamic pressure.关键词
涉水滑坡/库水变幅/渗流场/稳定性/三峡库区Key words
water related-landslide/fluctuation of reservoir water level/seepage field/stability/area of Three Groges Reservoir分类
天文与地球科学引用本文复制引用
尉壮岩,宋军,程英建,张勇..三峡库区水位变幅对奉节何家坡滑坡稳定性影响分析[J].水利水电技术,2017,48(4):118-123,6.基金项目
中国地质调查项目(DD20160278) （DD20160278）
国土资源部公益性行业专项(201511051) （201511051）
