采动区煤层气地面抽采钻井终孔位置优化考察  

The Optimization Investigation of Drilling Hole Positions For Ground Gas Pumping in CMM Mining Area

作　　者：张军[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]中国煤炭科工集团重庆研究院,重庆400037

出　　处：《煤矿安全》2012年第2期37-39,共3页Safety in Coal Mines

基　　金：大型油气田及煤层气开发科技重大专项资助项目(2011ZX05040-04)

摘　　要：为了考察煤层顶板岩层受采动影响下的裂隙发育过程,优化地面抽采钻井布孔工艺,在成庄煤矿4216回风副巷施工了6个不同角度的顶板穿层钻孔,采用封孔抽采的方式监测了覆岩内不同区域在工作面推进过程中的煤层气分布变化情况,通过分析对比各钻孔的抽采数据,优化了地面抽采钻井终孔位置。In order to investigate the crack development process influenced by mining damage in the roof strata of coal seam,optimize the drilling hole positions of ground gas pumping,researchers put roof crossing hole in six different angles in Chengzhuang coal mine 4216 return air vice lane,monitored the CMM distribution in the moving process of different face of overlying strata by hole sealing drainage.By analyzing and comparing the drainage data of different drilling holes,drilling holes final positions of ground gas pumping were optimized.

关 键 词：顶板岩层 裂隙场 煤层气分布 地面钻井 

分 类 号：TD325[矿业工程—矿井建设]