【摘要】 为查明普阳煤矿1号排土场目前内部应力应变特征及继续进行排土作业的可行性,本文结合根据野外勘察及钻探工程获得的相关数据,建立了排土场的边坡三维模型,在FLAC^3D中运用自编折减强度法对该排土场进行应力应变特点及边坡变形失稳特点进行模拟分析。分析结果表明:普阳煤矿1号排土场当前的安全系数为0.972,已不具备继续排土作业的安全要求;边坡内部塑性剪切带仍在发育,有导通上部坡面的趋势,预测可能发生牵引式滑坡,滑面呈次圆弧状。更多还原

【Abstract】 Based on the relevant data obtained from field survey and drilling engineering, this paper establishes a three-dimensional model of the slope of No.1 dump in Puyang Coal Mine, and simulates the stress and strain characteristics of the dump in FLAC^{3 D} by using the self-made reduction strength method. The three-dimensional numerical simulation analysis of the deformation and instability characteristics of the dumping slope shows that the current safety factor of the No. 1 dumping site in Puyang Coal Mine is 0.972, which has no safe conditions for continuing the earth moving operation; The plastic shear zone is still developing, and there is a tendency to conduct the upper slope. It is predicted that the traction landslide may occur, and the slip surface is sub-arc.更多还原