摘要
为研究W型通风综放工作面回采时瓦斯积聚的难题,以岳城煤业煤柱回收综放工作面为背景,提出了复合多元化“分源”瓦斯控制技术,并优化了通风系统和瓦斯抽采设计。研究发现,通过优化W型通风系统并对瓦斯集中区域进行抽放,工作面瓦斯浓度显著降低;采用复合多元化“分源”瓦斯控制技术,解决后部刮板输送机区域采空区瓦斯易积聚的突出问题;通过采用理论分析和数值模拟的方式对钻孔参数进行分析,优化原瓦斯抽采方案。瓦斯最大体积分数由3%降低至0.4%,抽采纯量较原方案提升200%以上,能够满足采空区瓦斯治理需求,保障矿井安全高效开采。
In order to study the problem of gas accumulation during the mining of W-type ventilation fully-mechanized caving face,based on the background of coal pillar recovery fully mechanized caving face in Yuecheng coal industry,a composite diversified"sub-source"gas control technology was proposed,and the ventilation system and gas extraction design were optimized.The study found that by optimizing the W-type ventilation system and pumping the gas concentration area,the gas concentration in the working face was significantly reduced;the compound and diversified"separate source"gas control technology is adopted to solve the outstanding problem of gas accumulation in the goaf of the back pass.Finally,through the analysis of gas extraction data,the original gas extraction scheme is optimized.The maximum concentration of gas is reduced from 3%to 0.4%,and the pure amount of gas extraction is increased by 200%,which can meet the needs of gas control in goaf and ensure the safe and efficient mining of mine.
作者
郝阳军
王嘉印
HAO Yangjun;WANG Jiayin(Jinneng Holding Group Qinxiu Coal Industry Co.,Ltd.,Jincheng 048000,China;College of Safety and Emergency Management Engineering,Taiyuan University of Technology,Jinzhong 030600,China)
出处
《煤炭技术》
2025年第9期192-195,共4页
Coal Technology
关键词
W型通风
综放工作面
高瓦斯
抽采设计
W-type ventilation
fully mechanized caving face
high gas
extraction design
