Failure mechanism and simulation for long run-out of the catastrophic rock landslide in the Shanyang Vanadium Mine,China

作     者：LIU Yinpeng Mumtaz HAIDER David-darnor LAWRENCE LI Tonglu SHEN Wei LI Ping LIU Yinpeng;Mumtaz HAIDER;David-darnor LAWRENCE;LI Tonglu;SHEN Wei;LI Ping

作者机构：College of Geological Engineering and GeomaticsChang’an UniversityXi’an 710054China Observation and Research Station of Water Cycle and Geological Environment for the Chinese Loess PlateauMinistry of EducationZhengning 745399China 

出 版 物：《Journal of Mountain Science》 (山地科学学报（英文）)

年 卷 期：2024年第21卷第9期

页      面：2905-2917页

核心收录：

学科分类：081901[工学-采矿工程] 081803[工学-地质工程] 0819[工学-矿业工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：funded by the National Key R&D Program of China(2021YFE0111900) the China Postdoctoral Science Foundation(2023M730353) Major Program of National Natural Science Foundation of China(Grant No.42041006) Natural Science Basic Research Program of Shaanxi(Program No.2022JM-167) 

主　　题：Rock landslide Gully erosion Long run-out Wedge block Discrete element method 

摘      要：On 12th August 2015,a massive rapid long run-out rock landslide occurred in the Shanyang Vanadium Mine in Shaanxi Province,China,which claimed the lives of 65 *** heavy rainfalls,earthquakes,and mining blasts were recorded before the ***,the failure mechanism and the cause of the long run-out movement are always in *** this paper,we conducted a detailed field investigation,laboratory tests,block theory analysis,and numerical simulation to investigate the failure and long run-out mechanisms of the *** field investigation results show that the source material of the rock landslide is a huge dolomite wedge block bedding on siliceous shale *** compression tests indicate that the uniaxial compression strength of the intact dolomite is 130-140MPa and the dolomite shows a brittle failure *** to the progressive downward erosion of the gully,the dolomite rock bridge at the slope toe became *** the compression stress in the dolomite bridge increased to surpass its strength,the brittle failure of the bridge *** huge potential energy was released following the disintegration of the landslide,which led to the high acceleration of this rock *** 3D discrete element simulation results suggest that the low intergranular friction contributes to the long run-out movement of this rock landslide.