露天采矿技术2023，Vol.38Issue(6)：21-25,5.DOI:10.13235/j.cnki.ltcm.2023.06.006
开采-渗流耦合作用下含正断层露天矿边坡变形规律研究
Study on deformation law of normal fault and slope stability under the action of mining-seepage
摘要
Abstract
In order to study the fault deformation law under the combined action of mining disturbance and groundwater,this article uses FLAC3D to establish a numerical model of slope with faults.By setting different excavation depths and groundwater extraction depths,the article explores the change characteristics of fault and slope displacement field and seepage field under the coupling action of mining and seepage flow.The results show that with the increase of mining depth,the maximum displacement of fault in X direction gradually increases.The main failure mode of the fault is tension fracture.With the development of mining and extraction,the distribution form of stress concentration changes from scattered point to linear distribution.The fault develops from discontinuous failure to through failure.With the deepening of mining,the range of plastic zone increases gradually.Affected by mining and groundwater seepage,the stability of the slope gradually decreases.Under the condition of groundwater,the overall stability coefficient of the slope decreases by 1.34%.关键词
边坡稳定性/断层/渗流场/滑移模式/数值模拟Key words
slope stability/fault/seepage field/slipping mode/numerical simulation分类
矿业与冶金引用本文复制引用
韦永豪,王振伟,李斌,王智涛,李元浩,弓启祥..开采-渗流耦合作用下含正断层露天矿边坡变形规律研究[J].露天采矿技术,2023,38(6):21-25,5.基金项目
国家自然科学基金面上资助项目(51774184) （51774184）
北方工业大学毓优团队资助项目(107051360019XN134/017) （107051360019XN134/017）
北方工业大学科研启动基金资助项目(110051360002) （110051360002）
