马堡煤矿8号煤瓦斯抽采半径考察研究  

Research on Gas Drainage Radius of No.8 Coal Seam in Mabu Coal Mine

作　　者：郑利凯 ZHENG Likai(Changzhi Co.,Ltd.,of Shanxi Coal Transportation and Marketing Group,Changzhi046000,China)

机构地区：[1]山西煤炭运销集团长治有限公司,山西长治046000

出　　处：《煤》2018年第4期4-5,14,共3页Coal

基　　金：国家自然科学基金资助项目(51004063)

摘　　要：针对马堡煤矿8号煤瓦斯含量高、瓦斯抽采率低的问题,提出在8208采煤面实施瓦斯抽采有效半径试验研究,以提高钻孔布置经济性。经考察,拟采用相对压力指标法来确定抽采钻孔的有效半径。通过试验,当抽采时间大于15 d时,抽采有效半径为1.0 m,为8号煤层瓦斯抽采钻孔布置提供了依据。Aiming at the problem of high gas content and low gas extraction rate of No.8 coal mine in Marbu Coal Mine,an experimental study on the effective radius of gas extraction in 8208 coal mining face was proposed to improve the economy of drilling.The effective radius of extraction borehole is determined by relative pressure index method.Through the experiment,when the extraction time is greater than 15 d,the effective radius of extraction is 1.0 m.It provides a basis for the arrangement of gas extraction and drilling in No.8 coal seam.

关 键 词：瓦斯含量 瓦斯抽采率 相对压力指标法 抽采半径 

分 类 号：TD712.6[矿业工程—矿井通风与安全]