基于预抽时间和抽采半径关系的钻孔间距优化设计  

Drilling Spacing Optimization Design Based on Relationship Between Pre-pumping Time and Extraction Radius

作　　者：周厚权[1,2] 

机构地区：[1]瓦斯灾害监控与应急技术国家重点实验室,重庆400037 [2]中煤科工集团重庆研究院有限公司,重庆400037

出　　处：《煤矿安全》2016年第4期150-153,共4页Safety in Coal Mines

基　　金："十二五"国家科技重大专项资助项目(2011ZX05041-04-004;2011ZX05040-003-003)

摘　　要：在保证工作面回采前抽采达标的同时,为最大程度的节省钻孔工程量,通过建立工作面瓦斯抽采半径和预抽时间模型,并在现场对抽采半径进行了实测,分析掌握了钻孔间距和预抽时间的动态变化关系,在此基础上结合巷道掘进和工作面回采速度对李雅庄矿2-609工作面运输巷分区域设计了钻孔间距,现场应用表明钻孔工程量减少27.8%,仍实现抽采达标。While ensuring gas extraction to meet the requirements before working face mining,to maximally save borehole engineering quantity,by establishing gas extraction radius and pre- pumping time model at working face,and field measurement of the drainage radius,this article analyzes and grasps the dynamic relation between the borehole spacing and pre- pumping time. On the basis of this,in Liyazhuang Mine 2- 609 face,borehole spacing is designed for subregional combined with roadway construction speed and working face mining speed. Field application showed that drilling engineering quantity reduced by 27. 8%,which still met the requirements of gas extraction.

关 键 词：瓦斯抽采 运输巷 数值模拟 抽采半径 钻孔间距优化 

分 类 号：TD712[矿业工程—矿井通风与安全]