【摘要】 某新建露天矿山两侧约300 m范围分布有邑劝乙线及金中直流输电线路塔基，矿山边坡开挖可能会导致电力塔基倾倒、下沉，或因滚石碰撞损坏塔基。采用赤平投影、极限平衡法、有限元数值模拟方法，从定性与定量角度，分析了露天采场边坡开挖的扰动范围、边坡的稳定性及坡顶滚石对电力塔基的影响。结果表明，露天采场边坡开挖至最终境界时，边坡处于稳定状态；采场两侧临近电力塔基扰动范围距离为69.2～192.9 m,且位于最小安全系数对应的潜在边坡滑动面范围之外；矿区坡顶滚石多滚落至周边山坳处，露天采场两侧的电力塔基位置较高且附近无滚石，该新建矿山的开采不会对采场两侧的电力塔基造成影响。更多还原

【Abstract】 A newly built open-pit mine has power tower foundations of Yiquanyi Line and Jinzhong DC transmission lines distributed within about 300 m on both sides, and slope excavation of the mine may cause the power tower foundations to topple, sink, or be damaged by rockfall impact. Stereographic projection, limit equilibrium method and finite element numerical simulation methods were adopted, and the disturbance range caused by open-pit slope excavation, slope stability and the impact of rockfalls at the slope top on power tower foundations were analyzed from qualitative and quantitative perspectives. The results show that when the open-pit slope is excavated to the final boundary, the slope is in a stable state. The distances from the power tower foundations adjacent to both sides of the stope to the disturbance range are 69.2-192.9 m, and the tower foundations are outside the scope of potential slope sliding surfaces corresponding to the minimum safety factor. The rockfalls at the slope top of the mining area mostly roll into the surrounding depressions. The power tower foundations on both sides of the open-pit stope are located at a high position and there are no rockfalls nearby. The mining of the new open-pit mine will not cause impacts on the power tower foundations on both sides of the stope.更多还原