文献类型：期刊文献

英文题名：Failure Mechanism of Underground Mining and Rainfall on High and Steep Slopes in Open Pit Mines: Insights From Model Experiments and Numerical Simulations

作者：He, Lu Wu, Di Shang, Yuqi Kong, Dezhong Zhang, Xizhi

第一作者：贺路

通信作者：Wu, D[1];Wu, D[2]

机构：[1]Guizhou Inst Technol, Sch Min Engn, Guiyang, Peoples R China;[2]Univ Sci & Technol Beijing, Key Lab Efficient Min & Safety, Beijing, Peoples R China;[3]Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing, Peoples R China;[4]Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Peoples R China;[5]Guizhou Univ, Coll Min, Guiyang, Peoples R China

第一机构：贵州理工学院矿业工程学院

通信机构：corresponding author), Univ Sci & Technol Beijing, Key Lab Efficient Min & Safety, Beijing, Peoples R China;corresponding author), Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing, Peoples R China.

年份：2025

外文期刊名：INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS

收录：;Scopus(收录号：2-s2.0-105021529379);WOS:【SCI-EXPANDED(收录号:WOS:001611320900001)】；

基金：The authors acknowledge the above funds for supporting this research and editors and reviewers for their comments and suggestions.

语种：英文

外文关键词：numerical simulation; open-pit slope; physical simulation; rainfall infiltration; underground mining

摘要：Based on the actual engineering conditions of a mine in Northeast China, this study conducts rainfall model tests on open-pit mine slopes using a self-designed model box, coupled with numerical simulations to investigate slope stability under rainfall infiltration. The physical test results reveal that during rainfall infiltration, the displacement in the Y-direction is more pronounced than that in the X-direction, with such displacements predominantly concentrated on the slope surface. Pore water pressure exhibits a continuous increase as rainfall infiltration proceeds. In the late stage of rainfall, the maximum principal strain is initially concentrated at the slope toe and subsequently propagates toward the middle of the slope. The rainfall infiltration sequence follows a pattern of slope top-slope surface-lower part of the slope mass. Multiple stress mutations occur at various stages of rainfall, inducing further extension of internal cracks within the model and widening of surface cracks due to rainfall erosion. Numerical simulation results indicate that the Y-direction strain convergence on the left slope surface presents an arc-shaped distribution, with an overall increasing trend in strain magnitude. Displacements are mainly concentrated in and around the underground stope, while pore water pressure gradually rises with increasing slope depth. The numerical simulation results are in substantial agreement with those from the physical model tests. The findings of this study provide a scientific reference for the prevention and control of open-pit slope instability induced by underground mining under rainfall conditions.