煤矿安全2018，Vol.49Issue(3)：5-8,4.DOI:10.13347/j.cnki.mkaq.2018.03.002
煤与瓦斯突出煤层CO2相变致裂增透技术试验研究
Experimental Study on Permeability Increasing Technique with CO2 Phase Transition Fracturing in Coal and Gas Outburst Coal Seam
摘要
Abstract
According to the problems of the high gas pressure,the low permeability,the difficult gas pre-drainage at Cheji Coal Mine,the permeability increasing technique tests by CO2 phase transition fracturing were carried out in the Ⅱ2 coal seam.The technical principle of CO2 phase transition fracturing and CO2 phase transition fracturing device were studied,the influence radius testing programs and the gas extraction effect testing programs of CO2 phase transition fracturing technique were designed.The field tests showed that,the radius of influence of CO2 phase transition fracturing test was 4 m,and the average gas extraction flow of the fracturing group was 1.7 times that of the normal extraction group in 15 d.关键词
CO2相变致裂/煤层增透/影响半径/抽采效果/瓦斯抽采Key words
CO2 phase transition fracturing/coal seam permeability increasing/influence radius/extraction effect/gas extraction分类
矿业与冶金引用本文复制引用
邹永洺..煤与瓦斯突出煤层CO2相变致裂增透技术试验研究[J].煤矿安全,2018,49(3):5-8,4.基金项目
中国煤炭科工集团有限公司科技创新基金资助项目(2014QN006) （2014QN006）
“十三五”国家科技重大专项资助项目(2016ZX05067004-003) （2016ZX05067004-003）
