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针对古叙矿区山区松散堆积边坡条件下,开采坡体滑移、滑坡灾害频发的情况,以四川泸州某矿为例,在分析地质采矿条件和滑坡产生的机制及规律的基础上,建立以不平衡推力迭代传递法为基础的坡体稳定性分析模型,通过计算得出坡体处于极限平衡状态下的抗滑段与主滑段面积之比为1/3.02。运用相似材料模拟对比研究得出:当S_A∶S_M<1∶3.02时,斜坡松散层在开采作用下产生滑移;当SA∶SM>1∶3.02时,斜坡松散层在开采作用处于稳定状态。结果表明,应用抗滑段与主滑段比值的方法,确定开采方案,是实现山区松散堆积边坡下开采滑坡灾害控制的有效途径之一。
Aiming at the condition of loose slope accumulation in the mountain area of the ancient Syrian Mining Area and the frequent occurrence of landslide hazard and landslide hazard in the mining area, a case study of a mine in Luzhou, Sichuan Province was established based on the analysis of geological mining conditions and the mechanism and rules of landslide occurrence The analysis model of slope stability based on the unbalanced thrust iterative transfer method is obtained by calculating that the ratio of anti-sliding section to main sliding section area is 1 / 3.02 under the state of limit equilibrium. The simulation results show that when S_A: S_M is less than 1: 3.02, the loose layer in the slope slips under the action of mining, and when the SA: SM> 1: 3.02, the loose layer in the slope is in a stable state during mining. The results show that using the method of ratio of anti-sliding section and main sliding section to determine the mining scheme is one of the effective ways to realize the landslide control under the loosely accumulated slope in mountainous area.