中国煤炭
中國煤炭
중국매탄
CHINA COAL
2014年
3期
102-105
,共4页
瓦斯抽采%本煤层抽采%采空区抽采%煤层增透%抽采效果
瓦斯抽採%本煤層抽採%採空區抽採%煤層增透%抽採效果
와사추채%본매층추채%채공구추채%매층증투%추채효과
gas drainage%coal seam extraction%gob drainage%coal seam permeability inG creasing%drainage effect
针对平煤十矿己-工作面瓦斯涌出量大、治理难度高的问题,采用本煤层预抽、采空区抽采及强化增透等多种方式相结合的综合瓦斯抽采技术最大限度地增加瓦斯抽采量.结果表明,实施综合瓦斯抽采技术后,工作面煤层瓦斯含量从.37 m3/t 降到.83 m3/t,瓦斯抽采率达.82％,回采期间回风流瓦斯浓度为.6％,保证了工作面的安全开采.
針對平煤十礦己-工作麵瓦斯湧齣量大、治理難度高的問題,採用本煤層預抽、採空區抽採及彊化增透等多種方式相結閤的綜閤瓦斯抽採技術最大限度地增加瓦斯抽採量.結果錶明,實施綜閤瓦斯抽採技術後,工作麵煤層瓦斯含量從.37 m3/t 降到.83 m3/t,瓦斯抽採率達.82％,迴採期間迴風流瓦斯濃度為.6％,保證瞭工作麵的安全開採.
침대평매십광기-공작면와사용출량대、치리난도고적문제,채용본매층예추、채공구추채급강화증투등다충방식상결합적종합와사추채기술최대한도지증가와사추채량.결과표명,실시종합와사추채기술후,공작면매층와사함량종.37 m3/t 강도.83 m3/t,와사추채솔체.82％,회채기간회풍류와사농도위.6％,보증료공작면적안전개채.
Aiming at the problem of large gas emission which is hard to control in F15G24080 working face in No.10 Mine,the comprehensive gas drainage technology including the coal seam preGdrainage,gob drainage,enhancing the coal seam permeability and other ways is adopted to maximize the gas extraction.The results show that,the implementation of comprehensive gas drainage technology,makes the gas content decrease from 12.37m3/t to 5.83m3/t in working face coal seam and the extraction rate reach 67.82%,and returnGair gas concentration is 0.6% during the recovery period,which ensure the safe mining in working face.
