Risk assessment and landslide prevention design using numerical modelling——A case study in Qingliu,China
作者机构：State Key Laboratory of Hydraulics and Mountain River EngineeringSichuan UniversityChengdu610065China College of Water Resource and HydropowerSichuan UniversityChengdu610065China
出 版 物：《Journal of Mountain Science》 (山地科学学报（英文）)
年 卷 期：2023年第20卷第4期
页 面：943-961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：the support of the National Natural Science Foundation of China(U2240221,41977229) the Sichuan Youth Science and Technology Innovation Research Team Project(2020JDTD0006) the Sichuan Provincial International Science and Technology Collaboration&Innovation Project(2020YFH0092)
主 题：Qingliu landslide Numerical simulation Mass movement Risk assessment Prevention measures
摘 要：Numerous Quaternary deposits are existed in the mountainous areas of Southwest China,especially in the transition zone between the QinghaiTibet Plateau and the Sichuan Basin,where strong tectonic movements and frequent climatic changes increase the potential *** possible deformation and failure process of potential landslides and their impacts on the surrounding environment are important research *** investigation and monitoring indicate that the Qingliu landslide in Xiameng town,Li County,Sichuan Province,China has been continuously deforming since August *** deformation zone has a maximum deformation depth of approximately 18.9m,a total area of 54,628 m2,and a volume of 34.0×104 m3,which seriously threatens infrastructure projects and *** a result,understanding the Qingliu landslide evolution process,assessing the hazard risk,and planning disaster prevention measures are of great significance for reducing disaster *** this study,the mass movement process and hazard risk of the Qingliu landslide are evaluated,and the effects of different prevention measures are compared and *** using the depth-integrated method,the mass movement of the Qingliu landslide is *** numerical simulation results indicate that the maximum velocity of the Qingliu landslide is approximately 37.5 m/s,and the duration of the landslide is approximately *** simulated landslide can eventually form a deposited mass with a maximum deposit thickness of 19.4 m and an area of approximately 60,168.3 m2,thereby blocking the river and burying ***,a risk assessment of the Qingliu landslide under different forms of protection measures is also produced and discussed by considering the hazard level and economic vulnerability level of the affected *** three layers of anti-slide piles on the deformation zone to reduce the hazard risk of the Qingliu landslide is a better *** results may be useful for planning preventio
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