挂帮矿开采引起的残采边坡应力场分布规律

Stress of displacement field during residual slope in residual ore mining

为最大限度地回收境界外矿石，对露天边坡上的残留矿体采用平硐追脉开采，开采完成后形成了残采边坡，破坏了边坡岩体结构．使边坡岩体内应力重新分布，影响了边坡的稳定性。本文利用ANSYS有限元大型数值模拟分析软件，通过建立石人沟矿追脉开采露天高边坡三维数值模型，进行数值模拟计算．分析残采边坡的稳定性，结果表明，平硐追脉开采对石人沟矿露天边坡整体稳定性影响不大，残采边坡是稳定的。

The residual ore bodies of open slope vein up mining through adit to maximize the recovery of ore outside the realm, and the residual slope is formed after the completion of the mining veining up mining hanging wall ore destroys the slope rock structure, redistributes the body of stress of rock slope, and affects the stability of the slope. Taking the veining up the hanging wail ore residual slope of Shirengou Iron Mine as example, the paper establishes three-dimensional numerical model of veining up mining of the high residual slope of Shirengou Iron Mine, and analyzes stability of residual slope through calculating with numerical simulation by using the large-scale finite element numerical simulation analysis software of ANSYS. The conclusion shows： adit recovery has little effects on the overall stability of the open-alr slope of Shirengou Iron Mine mining, and mining residual slope is stable.