五轮山煤矿顺层钻孔瓦斯抽采半径研究

Study on Gas Drainage Radius of Bedding Boreholes in Wulunshan Coal Mine

以五轮山8~#煤层为研究对象,分别采用含量法与流量法对8~#煤层进行顺层钻孔瓦斯抽采半径测试研究。结果显示,经过5个月的测定,含量法测定的顺层钻孔有效抽采半径为0.31～0.93 m,顺层钻孔抽采影响半径为0.81～1.70 m;流量法测定的顺层钻孔有效抽采半径为0.685～1.002 m。经过综合分析后,最终确定五轮山煤矿8~#煤顺层钻孔的有效抽采半径为1.00 m。

Taking No.8 coal seam of Wulunshan as the research object,the gas drainage radius of the8 th coal seam was measured by content method and flow method.The results showed that after 5 months of measurement,the effective extraction radius of the bedding hole measured by the content method was 0.31 to 0.93 m,the radius of influence of the bedding borehole was 0.81 to 1.70 m,and the bedding hole was determined by the flow method.The effective extraction radius is 0.685 to 1.002 m.After comprehensive analysis,the effective extraction radius of the 8 coal bedding hole in Wulunshan coal mine was determined to be 1.00 m.