白坪矿煤层瓦斯钻孔有效抽采半径研究  

Gas Drilling Study Effective Drainage Radius of Coal Seam in Baiping Coal Mine

作　　者：张飞[1] 王恩营[1] 马一思[1] 殷庆超 

机构地区：[1]河南理工大学资源环境学院,河南焦作454000

出　　处：《煤》2014年第3期4-6,共3页Coal

基　　金：国家自然科学基金资助(41372161);河南省产学研项目资助(132107000030);河南理工大学博士基金项目资助(B2011-068)

摘　　要：煤层瓦斯钻孔有效抽采半径的确定对于选择合理的布孔间距和预抽煤层瓦斯具有重要意义,采用相对瓦斯压力指标法对白坪矿二1煤层钻孔的有效抽采半径进行了研究。结果表明:相对瓦斯压力指标法测定煤层瓦斯有效抽采半径是一种有效的方法,并依此确定了白坪矿采用孔径为94 mm、抽采时间3个月时,其有效抽采半径为1.41 m,为抽采钻孔的设计提供了科学依据。The determination of the effective drainage radius of gas is very important to choose the reasonable hole spacing and drainage coal seam gas ,the relative gas pressure index method was applied to determine the effective drainage radius of gas in 21 coal seam in Baiping Coal Mine. The results showed that the relative gas pressure index method is an effect means, and we make sure that the effec- tive drainage radius of gas is 1.41 m when the drainage boreholes＇diameter is 94 mm and after three months drainage ,which could pro- vide the scientific basis to the design of the gas drainage borehole.

关 键 词：瓦斯抽采 穿层钻孔 有效抽采半径 相对瓦斯压力指标法 

分 类 号：TD712.6[矿业工程—矿井通风与安全]