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以赵固一矿11031工作面轨道顺槽与11011工作面带式输送机顺槽之间留设56 m宽煤柱为研究背景,通过理论分析的方法,计算出支承压力分布高峰位置,并计算出极限平衡区,得出理论上的合理煤柱尺寸。同时利用FLAC3D数值模拟的方法,模拟出留设不同宽度煤柱下的巷道的最大主应力分布规律,再利用深基点位移计进行矿压观测,得出不同位置处围岩的变形规律,从而对跨采遗留煤柱合理尺寸进行估算,以提高煤炭资源利用率。
Taking the 561m wide pillar left between the track of 11031 working face and the belt conveyor of 11011 working face of Zhaoguang No.1 Mine as research background, the peak position of bearing pressure distribution was calculated by theoretical analysis Out of the balance area, come to a reasonable theoretical coal pillar size. At the same time, by using FLAC3D numerical simulation method, the distribution law of the maximum principal stress of the roadway with different width of pillars is simulated. Then the deformation of the surrounding rock at different positions is obtained by using the deep base point displacement meter. Estimating the reasonable size of coal pillars across the mining to improve coal resource utilization.