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超高水材料充填开采对于围岩长期稳定性的控制作用,在国内外均缺少相关的研究。以冀中能源邯郸矿业集团陶一煤矿(简称陶一煤矿)充6工作面为背景,采用微地震和围岩应力动态监测相结合的实时监测方法,综合地表沉陷的测量数据,首次对超高水材料开放式充填大面积开采效果进行研究和评价。根据监测结果,在陶一煤矿充6工作面采高3 m、采深约300 m、工作面斜长120 m的条件下,工作面围岩覆岩破裂最大高度为48 m、支承压力影响范围35~40 m,工作面上方地表最大沉陷量为98 mm。结果表明,超高水材料开放式充填能够有效控制围岩破裂范围,减小采动影响,且在仰斜开采工作面运用效果较好。
The control of the long-term stability of surrounding rock by ultra-high water material filling and mining is lack of relevant research both at home and abroad. Based on the charge of 6 working face in the pottery-coal mine of Handan Mining Group in Handan Mining Group (referred to as Tao-Yi coal mine), a real-time monitoring method based on dynamic monitoring of microseismicity and surrounding rock stress was adopted. Based on the measured data of surface subsidence, Water material open-filling large-scale mining effect research and evaluation. According to the monitoring results, under the conditions of 3 m height, 300 m deep mining and 120 m inclined face of working face in charge of 6 coal seam in Tao Yi coal mine, the maximum height of rupture of surrounding rock of working face is 48 m and the influence range of bearing pressure 35 ~ 40 m, the maximum surface subsidence above the work surface is 98 mm. The results show that the open filling of ultra-high water can effectively control the rupture area of surrounding rock and reduce the influence of mining, and it works well in the working face with up-inclined mining.