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复合采空区卸压瓦斯综合治理及效果分析

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为了解决采动覆岩经历二次卸压造成的瓦斯涌出量大的关键问题,以晋能控股集团寺河煤矿2307下工作面和2307上采空区工程为研究对象,分析工作面布置方式及瓦斯运移机理,提出了采用"平行钻孔+走向钻孔+上隅角埋管+风排"的瓦斯综合治理技术.采取措施后回风巷瓦斯浓度在平均浓度0.5%,满足2307下工作面正常回采的要求,有效保证工作面安全回采.
Comprehensive treatment and effect analysis of gas pressure relief in composite goaf
In order to solve the key problem of large gas emission caused by secondary pressure relief of mining overburden,taking the 2307 lower working face and 2307 upper goaf project of Sihe Coal Mine of Jinneng Group as the research object,the paper analyzed the working face layout and gas migration mechanism,and put forward the gas comprehensive control technology of"parallel drilling+strike drilling+upper corner pipe laying+air drainage".After taking measures,the gas concentration in the return airway was 0.5%on average,meeting the re-quirements for normal mining of the 2307 lower working face and effectively ensuring the safe mining of the working face.

gas pressure reliefclose range coal seamfracture evolutiongas extractionhigh level drillingreturn air gas

王云

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中煤能源研究院有限责任公司,陕西西安 710054

卸压瓦斯 近距离煤层 裂隙演化 瓦斯抽采 高位钻孔,回风瓦斯

2024

煤炭科技
江苏省徐州矿务集团有限公司 江苏省煤炭学会 中国矿业大学

煤炭科技

影响因子:0.17
ISSN:1008-3731
年,卷(期):2024.45(2)
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