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本文通过对岭东矿老岭采区边坡的考察、测定和分析,认为老岭下盘边坡破坏模式为园弧形,其滑体上的诸力为重力,静水压力,爆破震动力和岩体的C.φ产生的抗滑力。采用计算机利用费辛柯法,作出危险断面形状,并用毕晓普法、极限平衡法计算了稳定系数。另外分析了炸药量、边坡角和岩体C.φ值对稳定系数的影响。经综合分析,认为老岭边坡存在不稳定体,同时提出了控制一段炸药量、泄水、清坡等措施以提高稳定系数。
In this paper, through the investigation, measurement and analysis of slopes in the Lingding mining area of the Lingdong coal mine, it is considered that the failure mode of the old rock slope is a circular arc. The forces on the sliding body are gravity, hydrostatic pressure, blasting vibration force and The anti-sliding force produced by the rock mass C.φ. Computers were used to use the Feixin Ke method to make dangerous section shapes, and the stability coefficient was calculated using the Bishop method and the limit equilibrium method. In addition, the influence of the amount of explosives, slope angle, and rock mass C.φ value on the stability coefficient was analyzed. After comprehensive analysis, it is believed that there are unstable bodies in the slope of Laoling, and measures such as controlling the amount of explosives, water discharge, and clearing the slope are proposed to increase the stability coefficient.