煤矿安全2017，Vol.48Issue(3)：9-12,4.DOI:10.13347/j.cnki.mkaq.2017.03.003
顺层定向千米长钻孔抽采半径时变规律研究
Research on Time Varying Laws of Extraction Radius for Bedding Directional 1 000 m Long Drilling
摘要
Abstract
According to the occurrence characteristics of 3# coal seam in a mine,1 000 m drilling machine with directional long drilling technology is used for the coal seam gas drainage.The field data of gas extracting from 1 000 m drill hole were put into statistical analysis,and the attenuation parameters of gas extraction were obtained.Combined with the basic parameters of 3# coal seam,the gas extraction radius variation can be found.Reasonable hole spacing can be concluded by analyzing and numerically simulating gas flow field among different drilling holes.Spot verification proves that the accuracy rate of extraction can reach 80％.Thus,this method is helpful to predict the effect of outburst prevention.关键词
定向长钻孔/瓦斯流场/抽采半径/突出防治/数值模拟Key words
directional long drilling/gas flow field/radius of extraction/outburst prevention/numerical simulation分类
矿业与冶金引用本文复制引用
董红娟,张金山,李文哲,王岩..顺层定向千米长钻孔抽采半径时变规律研究[J].煤矿安全,2017,48(3):9-12,4.基金项目
内蒙古自然科学基金资助项目(2016MS0542) （2016MS0542）
内蒙古自治区高等学校科学研究资助项目(NJZY16163) （NJZY16163）
内蒙古科技大学创新基金资助项目(2016XYPYL02) （2016XYPYL02）
