凹山尾矿坑西北帮边坡渗流稳定性分析

采用节点虚流量法，对凹山采坑改建尾矿坑西北帮边坡地下水渗流进行计算；结合凹山采坑内水位的变化及长期被浸没岩体的软化作用，依据极限平衡法理论，探讨凹山采坑西北帮边坡的稳定性。结果表明，相对边坡高度，水位骤升不超过1.7 m，水位骤降不超过0.5 m时，长期被浸没岩体的边坡稳定性变化不大；但是岩体软化作用会使边坡稳定性有所降低。研究结果对类似边坡有一定的参考价值。

Stability Analysis of the Seepage Slope of the Northwest Side of Washan Tailings Pit#br#

The node virtual flow method is used to calculate the groundwater seepage on the northwest side slope of the tailing pit reconstructed from the Aoshan pit;According to the limit equilibrium method,considering the change of water level in the pit and the softening phenomenon of long term submerged rock mass,the stability of the slope on the northwest side of the pit is discussed.The results show that when the water level rises no more than 1.7 m and the water level falls no more than 0.5 m,the slope stability of the long term submerged rock mass does not change much;However,the softening of the rock mass will reduce the long term stability of the slope.The research results have certain reference value for similar slopes.