突出煤层回采面CO_(2)致裂二次增透后高效回采技术研究  

Study on High-efficiency Mining Technology after Secondary Anti-reflection by CO_(2)Fracturing in Outburst Coal Seam Mining Face

作　　者：尹明珩 甘路军 翟文杰 李明 张军胜 郭帅房 YIN Mingheng;GAN Lujun;ZHAI Wenjie;LI Ming;ZHANG Junsheng;GUO Shuaifang(Shanxi Heshun Tianchi Energy Co.,Ltd.;School of Resources and Environment,Henan Polytechnic University)

机构地区：[1]山西和顺天池能源有限责任公司 [2]河南理工大学资源环境学院

出　　处：《现代矿业》2024年第4期92-94,共3页Modern Mining

摘　　要：天池煤矿15号煤层瓦斯含量高,难抽采,在回采割煤时,存在瓦斯超限隐患,且一个割煤循环需要6h以上,严重制约了工作面的回采速度。为提高开采效率,利用CO_(2)致裂煤岩的技术方法,提出了突出煤层回采面CO_(2)致裂二次增透高效回采技术。通过试验发现:CO_(2)致裂后,瓦斯涌出量平均减少了16.7%,并能实现密集钻孔条件下的瓦斯高效抽采,提高回采速度。割煤速度从致裂前2.11~2.91刀/d提高到3.38~4.59刀/d,平均提高了1.63倍。The gas content of No.15 coal seam in Tianchi Coal Mine is high and difficult to extract.There is a hidden danger of gas overrun in coal mining,and a coal cutting cycle takes more than 6 h,which seriously restricts the mining speed of the working face.In order to improve the mining efficiency,using the technical method of CO_(2)fracturing coal rock,the CO_(2)fracturing secondary anti-reflection and high-efficien-cy mining technology of outburst coal seam mining face is proposed.Through the experiment,it is found that after CO_(2)fracturing,the gas emission is reduced by 16.7%on average,and the efficient gas extraction un-der the condition of dense drilling can be realized,and the mining speed can be improved.The coal cutting speed increased from 2.11~2.91 knives/d before fracturing to 3.38~4.59 knives/d,with an average increase of 1.63 times.

关 键 词：CO_(2)致裂技术 工作面瓦斯 二次增透 割煤速率 

分 类 号：TD712.6[矿业工程—矿井通风与安全]