摘要
为了研究东明露天煤矿东帮边坡的稳定性情况,对现场工地进行钻探取样,掌握岩层信息和地质情况;采用莫尔-库伦强度理论对所取岩心进行科学实验,精确获得地层的物理力学指标;在此基础之上,通过理论分析和FLAC3D数值模拟方法对边坡的变形位置及破坏模式进行了详细研究。结果表明:边坡在第4台阶处出现最大拉应力,土体发生平移滑动并形成圆弧滑动面,并且在坡顶处出现大沉降变形,在经过雨水冲刷后存在滑坡风险。
In order to study the stability of the east slope in Dongming Open-pit Coal Mine,the on-site site was drilled and sampled,and the rock formation information and geological conditions were preliminarily grasped.The Mohr-Coulomb strength theory was used to conduct scientific experiments on the selected cores to accurately obtain the physical and mechanical indicators of the formation.On this basis,the deformation position and failure mode of the slope are studied in detail through theoretical analysis and FLAC3D numerical simulation method.The results show that the slope has the maximum tensile stress at the fourth step,the soil body slides and forms a circular sliding surface,and a large settlement deformation occurs at the top of the slope.There is a risk of landslides after rain erosion.
作者
李坤
李元浩
李营作
LI Kun;LI Yuanhao;LI Yingzuo(Hulunbei’er Dongming Mine Co.,Ltd.,Hulunbei’er 021000,China;North China University of Technology,Beijing 100041,China)
出处
《露天采矿技术》
CAS
2023年第3期67-69,74,共4页
Opencast Mining Technology
