上解放层底板下向钻孔抽放被解放层瓦斯技术研究  

On gas drainage technology of liberated seam in the floor of the upper protective seams through downward-boreholes

作　　者：王轶波[1] 李红涛[1] 赵启峰[1] 

机构地区：[1]华北科技学院安全工程学院,北京101601

出　　处：《矿业工程研究》2011年第2期18-21,共4页Mineral Engineering Research

基　　金：国家自然科学基金资助项目(50874111);国家高技术研究发展计划(863计划)重点资助项目(2009AA063201);教育部新世纪优秀人才支持计划资助项目(NCET-10-0724);教育部留学回国人员科研启动基金资助项目

摘　　要：开采上保护层以解放邻近有突出危险煤层时,被解放层卸压瓦斯会通过裂隙大量涌入保护层采空区和工作面,增加了保护层工作面瓦斯治理工作难度.而在条件充许的情况下,如果直接对被保护层卸压瓦斯进行抽放可达到事半功倍的效果.据此思路,根据开采煤体时底板破坏理论可计算底板最大破坏范围及深度,提出上保护层底板下向钻孔抽放被保护层卸压瓦斯的抽放方法,并给出了抽放钻孔布置的设计方案.When mining the upper protective coal seam to liberate the neighboring coal seam with outburst dangerous,the pressure-relieved gas of the liberated seam will pour in goaf and face of the protective seam,which will increase the difficulty of gas control working of the protective seam face.In case of conditions permitting,the pressure-relieved gas drainage of the liberated seam directly can reach twice the result with half the effort.Accordingly,the maximum damage range and depth of the floor can be calculated according to the floor damage theory when mining coal,presenting the gas drainage method of liberated seam in the floor of the upper protective seams through downward-boreholes,and giving the drainage borehole layout design scheme.

关 键 词：瓦斯抽放 开采解放层 高瓦斯矿井 

分 类 号：TD712.6[矿业工程—矿井通风与安全]