露天采矿技术2025，Vol.40Issue(4)：14-19,6.DOI:10.13235/j.cnki.ltcm.20250044
含断层边坡地下水渗透特性及失稳机理研究
Research on seepage characteristics and instability mechanism of faulted slope groundwater
摘要
Abstract
In order to study the mechanism of slope instability under the coupling action of groundwater seepage and faults,the article establishes geotechnical engineering model,and adopt numerical calculation to study the change characteristics of groundwater seepage in the slope under different water level conditions from the aspects of groundwater level change,pore water pressure and hydraulic gradient.The article simulates and analyzes the slope under the coupling action of groundwater and fault by Flac3D,reveals the mechanism of slope instability.The results show that the groundwater seepage in the slope is affected by the aquiclude effect of the fault,and there is an step-like sudden change phenomenon at the F2 fault,and the sudden change phenomenon is not obvious at the F5 fault.With the decrease of the water head of the slope,the height of the sudden change of groundwater at the fault shows a decreasing trend,and the decreasing speed decreases.The hydraulic gradient increases first and decreases.The instability of the slope mainly occurs in the two fault areas.The instability mode of the slope is that the rock mass in the fault zone deforms under coupling action of groundwater and fault,which leads to the deformation of the backfill material above,thus causing the instability of the sliding failure along the layer.关键词
渗流特性/断层/耦合作用/台阶跃变/顺层滑移Key words
permeability characteristic/fault/coupling effect/step jump/bedding plane slip分类
矿业与冶金引用本文复制引用
王小军,颜旭,王韬,郭夏飞..含断层边坡地下水渗透特性及失稳机理研究[J].露天采矿技术,2025,40(4):14-19,6.基金项目
煤炭科学技术研究院有限公司科技发展基金资助项目(2023CX-I-08) （2023CX-I-08）
