Spatial distribution and failure mechanism of water-induced landslides in the reservoir areas of Southwest China

作     者：Mingliang Chen Xingguo Yang Jiawen Zhou Mingliang Chen;Xingguo Yang;Jiawen Zhou

作者机构：State Key Laboratory of Hydraulics and Mountain River EngineeringSichuan UniversityChengdu610065China College of Water Resources and HydropowerSichuan UniversityChengdu610065China 

出 版 物：《Journal of Rock Mechanics and Geotechnical Engineering》 (岩石力学与岩土工程学报（英文版）)

年 卷 期：2023年第15卷第2期

页      面：442-456页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：We gratefully acknowledge the support of the National Key R&D Program of China(Grant No.2017YFC1501102) the National Nat-ural Science Foundation of China(Grant No.41977229) the Sichuan Youth Science and Technology Innovation Research Team Project(Grant No.2020JDTD0006) 

主　　题：Water-induced landslide Hydropower reservoir Spatial distribution Fundamental control Failure mechanism 

摘      要：Water-induced landslides in hydropower reservoirs pose a great threat to both project operation and human *** paper examines three large reservoirs in Sichuan Province,*** surveys,site monitoring data analyses and numerical simulations are used to analyze the spatial distribution and failure mechanisms of water-induced landslides in reservoir ***,the general rules of landslide development in the reservoir area are *** first rule is that most of the landslides have rear edge elevations of 100e500 m above the normal water level of the reservoir,with volumes in the range of 106 e107 m *** the volume exceeds a certain amount,the number of sites at which the landscape can withstand landslides is greatly *** hazards mainly occur in the middle section of the reservoir and less in the annex of the dam site and the latter half of the reservoir *** second rule is that sedimentary rocks such as sandstone are more prone to landslide hazards than other ***,the failure mechanism of changes in the water level that reduces the stability of the slope composed of different geomaterials is analyzed by a proposed slope stability framework that considers displacement and is discussed with the monitoring *** is an essential parameter for understanding the diametrically opposed deformation behavior of landslides experiencing filling-drawdown cycles during *** study seeks to provide inspiration to subsequent researchers,as well as guidance to technicians,on landslide prevention and control in reservoir areas.