露天采矿技术2026，Vol.41Issue(2)：45-50,6.DOI:10.13235/j.cnki.ltcm.20250298
含断层露天矿边坡分段开挖稳定性动态演化与控制
Dynamic evolution and control of stability of fault-containing open-pit mine slopes during stagewise excavation
摘要
Abstract
To clarify the dynamic evolution law of slope stability during the graded excavation to the designed slope angle in an open-pit mine,this article takes Jilangde Open-pit Mine as research background,uses MIDAS GTS-NX software to carry out numerical simulations for each excavation stage of a synclinal slope containing faults with a designed slope angle of 30°,proposes a dynamic stability analysis method based on 18 mining stages,reveals the mechanism of slope sliding induced by multi-stage mining.The results indicate that the stages 6 to 9 represent a stability-sensitive period,during which the safety factor decreases by 56%of the total reduction throughout the entire process.Moreover,the fine sandstone layer beneath coal seam B5 is identified as the key stratum controlling slope deformation.Based on these findings,the article proposes a graded prevention and control system combining"monitoring and early warning—structural reinforcement".关键词
断层/分段开挖/边坡稳定性/边坡变形/数值模拟/破坏特征Key words
fault/stagewise excavation/slope stability/slope deformation/numerical simulation/failure characteristic分类
矿业与冶金引用本文复制引用
陈奇,王振伟,黄科伟,李营作,蒋香莲,吴晨,吕泊宁..含断层露天矿边坡分段开挖稳定性动态演化与控制[J].露天采矿技术,2026,41(2):45-50,6.基金项目
国家重点研发计划资助项目(2024YFC3013904) （2024YFC3013904）
