基于FLAC^(3D)的露天矿采场边坡潜在滑移模式预测

Prediction of potential slip mode of open-pit mine stope slope based on FLAC^(3D)

针对胜利东二号露天煤矿采场南帮出现变形裂隙,为准确预测边坡潜在滑移模式,利用详尽地质条件信息,进行3Dmine-Rhino耦合建模,建立了南帮非均质真三维数值模拟模型;采用FLAC^(3D)软件进行计算,研究了南帮潜在滑移模式。结果表明:现状地表裂隙和底鼓位置与数值模拟结果基本一致,验证了该模拟的准确性;南帮潜在滑体破坏模式为以第三系底板为弱层的圆弧-弱层组合滑动,地表裂隙和底鼓位置均会向西发展。

Aiming at the deformation cracks appearing on the south slope of the stope in Shengli East No.2 Open-pit Coal Mine,in order to accurately predict the potential slip mode of slope,the article carries out 3Dmine-Rhino coupling modeling using detailed geological condition information,establishes the heterogeneous true three-dimensional numerical simulation model of the south slope.The article studies the potential slip mode of the south slope using FLAC^(3D)software for calculation.The results show that the current position of surface cracks and floor heave is basically consistent with the numerical simulation results,which verifies the accuracy of the simulation;the failure mode of the potential sliding body in the south slope is the circular-weak combined sliding with the Tertiary floor as the weak layer and the location of surface cracks and floor heave will develop to the west.