摘要
基于鑫臻煤矿25102综采工作面回采期间通风阻力大、上隅角瓦斯积聚现象严重、上隅角瓦斯治理难度大以及工作面煤层瓦斯抽采效率差等技术难题,通过技术研究对工作面原“U”型通风系统进行优化改进,采用“Y”型通风系统,并对工作面回采煤层提出了“采空区埋管+布置高位裂隙钻孔+迈步式顺槽钻孔”联合瓦斯抽采工艺。实际应用效果表明:通风系统优化后,杜绝了上隅角瓦斯积聚现象;采用联合瓦斯抽采技术后,煤层瓦斯抽采率达42.8%,回采期间工作面瓦斯浓度降低至0.7%以下,取得了显著应用成效。
Based on the technical difficulties of high ventilation resistance,severe gas accumulation in the upper corner,high difficulty in gas control in the upper corner,and poor gas extraction efficiency in the 25102 fully mechanized mining face of Xinzhen Coal Mine,the original"U"type ventilation system of the working face was optimized and improved through technical research,and a"Y"type ventilation system was adopted.And a combined gas extraction process of"burying pipes in the goaf,arranging high level crack drilling,and walking along the channel drilling"was proposed for the coal seam extraction at the working face.The practical application results show that after optimizing the ventilation system,the phenomenon of gas accumulation in the upper corner is eliminated.After adopting the combined gas extraction technology,the coal seam gas extraction rate reached 42.8%,and the gas concentration in the working face decreased to below 0.7% during the mining period,achieving significant application results.
作者
云霄
张立卓
姬忠峰
Yun Xiao;Zhan Lizhuo;Ji Zhongfeng(Zhongjian Group Gongxin Security Technology Co.,Ltd.,Zaozhuang Shandong 277101,China)
出处
《山西冶金》
CAS
2023年第7期172-174,共3页
Shanxi Metallurgy
关键词
综采工作面
通风系统优化
Y型通风
瓦斯抽采
应用分析
fully mechanized mining face
optimization of ventilation system
Y-shaped ventilation
gas extraction
application analysis
