摘要
上隅角瓦斯浓度超限问题严重影响煤矿安全生产工作,针对东曲煤矿瓦斯抽采流量低、工作面瓦斯浓度超限等问题,采用数值模拟方法对150 mm、250 mm、350 mm直径钻孔,以及-45 kPa、-30 kPa、-15kPa抽采负压的瓦斯抽采效果进行对比。以28802-2工作面为例,选取350 mm大钻孔与-45 kPa抽采负压进行30 d的瓦斯流量与浓度监测,结果表明瓦斯治理取得了良好效果。
The problem of gas concentration exceeding the limit in the upper corner seriously affects the safety production of coal mines.Aiming at the problems of the low gas drainage flow and gas concentration exceeding the limit in the working face of Dongqu Coal Mine and so on,numerical simulation methods are used to compare the gas drainage effects of drilling holes with diameters of 150 mm,250 mm,350 mm,and negative pressure of-45 kPa,-30 kPa,and-15 kPa.Taking the 28802-2 working face as an example,a 350 mm large borehole and-45 kPa drainage negative pressure are selected for 30 days of gas flow and concentration monitoring.The results show that good results are achieved in gas control.
作者
韩建雄
Han Jianxiong(Shanxi Coking Coal Xishan Coal Electricity Dongqu Coal Mine,Shanxi Taiyuan 030200)
出处
《山东煤炭科技》
2023年第8期126-128,共3页
Shandong Coal Science and Technology
关键词
瓦斯抽采
大直径钻孔
抽采负压
gas drainage
large diameter drilling hole
drainage negative pressure
作者简介
韩建雄(1992-),男,山西古交人,2014年毕业于阳泉职业技术学院煤矿开采技术专业,专科,通安助理工程师,现在山西焦煤西山煤电东曲矿从事瓦斯抽采技术管理工作。
