Model Test Study on Response of Weathered Rock Slope to Rainfall Infiltration under Different Conditions

作     者：Cong Li Rongtang Zhang Jiebing Zhu Bo Lu Xiaowei Wang Fangling Xu Xiaoke Shen Jiesheng Liu Weizhen Cai Cong Li;Rongtang Zhang;Jiebing Zhu;Bo Lu;Xiaowei Wang;Fangling Xu;Xiaoke Shen;Jiesheng Liu;Weizhen Cai

作者机构：School of Civil Engineering and ArchitectureWuhan Polytechnic UniversityWuhan430023China Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water ResourcesYangtze River Scientific Research InstituteWuhan430010China Key Laboratory of Ministry of Education for Geomechanics and Embankment EngineeringHohai UniversityNanjing210098China 

出 版 物：《Journal of Earth Science》 (地球科学学刊（英文版）)

年 卷 期：2024年第35卷第4期

页      面：1316-1333页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 080104[工学-工程力学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(Nos.52179110,51309025,41877280 and 41672320) Geological Survey project of China Geological Survey(Nos.DD20160257,DD20190263,121201009000150023,202007000000180506) 

主　　题：weathered rock slope model test rainfall early warning unsaturated soil 

摘      要：Weathered rock(especially granite)slopes are prone to failure under the action of rainfall,making it necessary to study the response of weathered rock slope to rainfall infiltration for landslide *** this study,a series of model tests of weathered rock slope under different conditions were *** matric suction,volumetric water content,earth pressure and deformation of slope were monitored in real time during *** response of the slope to rainfall infiltration,failure process and failure mode of slope under different conditions were analyzed,and the early warning criterion for the failure of weathered rock slope caused by rainfall was *** results show that the slope deformation evolution process under rainfall condition was closely related to the dissipation of matric *** the distribution of the matrix suction(or water content)of slope met the condition that the resistance to sliding of the slip-mass was overcome,the displacement increased sharply and landslide *** factors including rainfall process,lithologic condition and excavation condition significantly affect the response of weathered rock slope to *** can be found from the test results under different conditions that compared with intermittent rainfall condition,the rainfall intensity and infiltration depth were smaller when the slope entering accelerated deformation stage under the condition of incremental *** accumulated rainfall when weathered clastic landslide occurring was greater than that of weathered granite,which results in greater disaster *** excavation angle and moisture distribution of a slope were the main factors affecting the stability of a *** addition,the evolution processes and critical displacement velocities of slopes were studied by combining the deformation curves and matrix suction curves,which can be used as reference for early warning of rainfall-induced weathered rock landslide.