采空区瓦斯治理技术及治理效果分析
Analysis of Gas Control Technology and Effectiveness in Goaf
袁帅1
作者信息
- 1. 山西焦煤霍州煤电店坪煤矿,山西 吕梁 033102
- 折叠
摘要
店坪煤矿204工作面回采期间架后采空区150 m范围内瓦斯浓度高达4.7％,导致工作面上隅角、架间间隙以及工作面内瓦斯严重超限现象,制约着工作面安全高效回采.店坪煤矿通过技术研究,对204工作面采空区瓦斯超限原因进行合理分析,布置采空区埋管+高位裂隙带钻孔+顺煤层长短孔,并采取Y型通风等联合瓦斯治理技术.实际应用表明,采取联合瓦斯治理技术后,工作面在后期回采中架后采空区瓦斯浓度控制在1.0％以下,上隅角及工作面未出现瓦斯超限现象,取得了显著的应用成效.
Abstract
The gas concentration within a 150 meter range of the goaf after the support frame in the 204 working face of Dianping Coal Mine is as high as 4.7％,which leads to serious gas exceeding the limit in the upper corner of the working face,the gap between the support frames,and the working face,which restricts the safe and efficient mining of the working face.Through technical research,Dianping Coal Mine conducted a reasonable analysis of the reasons for gas exceeding the limit in the goaf of the 204 working face.The goaf was equipped with buried pipes,high-level fracture zone drilling,and long and short holes along the coal seam,and combined gas control technologies such as Y-shaped ventilation were adopted.Practical applications have shown that after adopting the combined gas control technology,the gas concentration in the goaf after the middle frame of the mining face is controlled below 1.0％,and there is no gas exceeding the limit phenomenon in the upper corner and the working face,achieving significant application results.
关键词
综采工作面/采空区/瓦斯超限原因/治理技术/效果分析Key words
fully mechanized mining face/goaf/reasons for gas exceeding limit/governance technology/effect analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据