摘要
针对成庄矿四盘区4321工作面煤体瓦斯含量高,高强度开采易造成回风隅角和回风巷瓦斯超限等问题,提出了采取普通顺层钻孔预抽、定向顺层钻孔预抽、底抽巷穿层钻孔预抽、采空区埋管抽采、长距离高位钻孔抽采相结合的综合瓦斯治理方法及工艺,并对其抽采效果进行了考察、分析。研究结果表明:工作面回采期间的风排瓦斯量、抽采瓦斯量、绝对瓦斯涌出量、回风巷瓦斯浓度、上隅角瓦斯浓度等均随着工作面推进度的变化而变化。工作面瓦斯抽采量占绝对瓦斯涌出量的78%,上隅角最大瓦斯浓度为0.7%,回风巷最大瓦斯浓度为0.55%。说明采取的瓦斯治理措施有效,可解决高瓦斯大采高工作面的瓦斯涌出问题。
In view of the high gas content of coal at 4321 working face in the fourth panel of Chengzhuang mine,high-intensity mining is likely to cause the return air corner and the return airway gas to exceed the limit,it is proposed to adopt ordinary bedding drilling pre-draining and directional bedding drilling comprehensive gas treatment technology and technology combining hole pre-drainage,bottom-draining roadway through-layer drilling pre-drainage,roadway retention along the goaf and buried pipe drainage,long-distance high-location drilling and drainage,and its drainage effect has been investigated,analysis.The research results show that:during the working face′s recovery period,the amount of air exhausted gas,the amount of extracted gas,the absolute gas emission,the gas concentration of the return airway,the gas concentration of the upper corner,etc.all change with the change of the advancement of the working face.The gas drainage volume in the working face accounts for 78%of the absolute gas emission volume,the maximum gas concentration in the upper corner is0.7%,and the maximum gas concentration in the return air tunnel is 0.55%.It shows that the gas control measures adopted are effective and can solve the problem of gas emission in the high gas mining face.
作者
崔鹏飞
陈向军
李新建
王满
张建
CUI Pengfeil;CHEN Xiangjun;LI Xinjian;WANG Man;ZHANG Jian(School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo 454000,China;Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization,Jiaozuo 454000,China;Research Institute of Energy and Chemical Industry,China Pingmei Shenma Group,Pingdingshan 467000,China;Chengzhuang Mine,Jinneng Holdings Coal Industry Group,Jincheng 048000,China;CCTEG Chongqing Research Institute,Chongqing 400050,China)
出处
《煤炭技术》
CAS
北大核心
2022年第11期143-147,共5页
Coal Technology
基金
国家自然科学基金(51874122,52074105)。
关键词
高瓦斯矿井
大采高工作面
瓦斯治理
高位钻孔
顺层钻孔
穿层钻孔
high gas mine
large mining height working face
gas control
high drilling
bedding drilling
straddling drilling
