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以同安煤矿远距离上保护层开采作为研究对象,通过测定同安煤矿下部15#突出煤层瓦斯压力、瓦斯流量、煤层透气性和煤层相对变形等参数变化情况,研究该矿5#煤层作为上保护层对下部15#煤层的防突保护效果。结果表明:下保护范围内的15#煤层原始瓦斯压力显著下降,煤层相对变形增加到2.41‰,瓦斯流量增加了67倍,透气性系数增加了115倍。5#远距离上保护煤层对下部15#被保护煤层起到了较好的保护作用。
Based on the analysis of coal seam gas pressure, gas flow rate, coal seam gas permeability and relative deformation of coal seam under the conditions of No.15 coal seam in Tong’an coal mine, the coal seam # 5 in the coal mine is studied as the upper protective layer Outburst protection effect on lower 15 # seam. The results show that the original gas pressure in 15 # coal seam under the scope of protection decreases significantly, the relative deformation of coal seam increases to 2.41 ‰, the gas flow rate increases 67 times, and the gas permeability coefficient increases 115 times. 5 # long-distance protection of coal seam on the lower part of the 15 # has played a protective coal protection.