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

Journal of Rock Mechanics and Geotechnical Engineering 2023年第2期15卷 442-456页

作者： Mingliang Chen Xingguo Yang Jiawen Zhou State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan UniversityChengdu610065China College of water Resources and Hydropower Sichuan UniversityChengdu610065China

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.

关键词： water-induced landslide Hydropower reservoir Spatial distribution Fundamental control Failure mechanism

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