Response of an old landslide to reservoir filling: A case history

被引：11

作者：

Deng, JH ^{[1
]}

Wei, JB

Min, H

Tham, LG

Lee, CF

机构：

[1] Chinese Acad Sci, Key Lab Rock & Soil Mech, Wuhan 430071, Peoples R China

[2] Univ Hong Kong, Dept Civil Engn, Hong Kong, Hong Kong, Peoples R China

来源：

SCIENCE IN CHINA SERIES E-ENGINEERING & MATERIALS SCIENCE | 2005年 / 48卷 / Suppl 1期

基金：

中国国家自然科学基金;

关键词：

reservoir filling; old landslide; monitoring system; water level; deformation;

D O I：

10.1360/04zze3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Unfavorable hydrodynamic evolution is considered as the major cause leading to reservoir slope instability and is often modeled by numerical method. However, this simulation is seldom checked by systematic field instrumentation. Taking the opportunity of filling the Three Gorges Reservoir, a system was established in Xietan landslide to monitor reservoir water level, subground water level, seepage pressure, rainfall and deformation, etc. The monitored data during reservoir filling shows that: (1) The water level rise in the bank lags behind the reservoir filling and the lag time depends on the bank permeability; (2) rainfall-induced subground water rise and its lag time is closely correlated to hourly rainfall, indicating that it is not feasible or sufficient to use daily rainfall for analysis; (3) the effect of inverse seepage during reservoir filling on stability is ephemeral and reservoir filling is the major cause leading to bank instability.

引用

页码：27 / 32

页数：6