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淮南矿业集团潘三煤矿是典型的煤与瓦斯突出矿井。针对潘三矿穿层钻孔预抽煤层瓦斯防突措施消突周期长,工程量大,掘进速度慢等问题,选择17171(1)轨道、运输顺槽试验顺层钻孔预抽煤巷条带煤层瓦斯区域防突措施。自执行顺层长钻孔预抽煤层瓦斯防突措施以来,煤层最大残存瓦斯含量为4.17 m3/t,最大残余瓦斯压力为0.32 MPa,钻屑量S值在4.0～5.4 kg/m之间,钻孔瓦斯涌出初速度q在0.9～2.7 L/min之间,均无超标现象,实现瓦斯零超限,巷道瓦斯涌出量减小,有效地消除了煤与瓦斯突出危险性,实现工作面安全快速掘进。
Pansan coal mine in Huainan Mining Group is a typical coal and gas outburst mine. Aiming at the problems of gas outburst prevention measures, such as long outburst period, large engineering quantity and slow heading speed, in the pre-pumping coal seam of Pan3 mine, the 17171 (1) Gas outburst prevention measures with coal seam gas area. Since the implementation of gas outburst prevention measures with long borehole pre-pumping coal seams, the maximum residual gas content of coal seam is 4.17 m3 / t, the maximum residual gas pressure is 0.32 MPa, the cuttings S value is between 4.0 and 5.4 kg / m, The initial rate of gas gushing at the borehole q is between 0.9 and 2.7 L / min, with no over-standard phenomenon, zero gas exceeded limit and gas emission from the roadway reduced, which effectively eliminated the danger of coal and gas outburst and realized the working face Safe and fast driving.