摘要
为解决碾沟煤业4101首采工作面瓦斯涌出量较大的问题,通过理论分析确定瓦斯主要来源,采用顺层钻孔预抽本煤层瓦斯、高位钻孔抽采卸压瓦斯的综合治理措施,确定顺层钻孔间距为8.0m及抽采时间为90d,高位钻孔垂直高度为19m,布置间距为20m,成功地将4101工作面各处的瓦斯浓度控制在安全范围内。
In order to solve the problem of large gas emission in the 4101 first mining face of Niangou Coal Industry,the main source of gas was determined through theoretical analysis.Comprehensive treatment of pre-draining the gas in this coal seam with high-level drilling and unloading and pressure-relieving gas was adopted through the theoretical analysis.Measures to determine the spacing of boring holes in the bedding layer to be 8.0m and the extraction time to be 90 days,the vertical height of the high-level boreholes to be 19m,and the layout spacing to be 20m.The monitoring results during field application showed that the gas concentration in the 4101 working face was successfully controlled Within safe range.It has important reference significance for gas management similar to high gas working face.
作者
张克斌
ZHANG Kebin(Shanxi Yang Coal Group Niangou Coal Industry Co.,Ltd.,Qingxu030400,China)
出处
《煤矿现代化》
2021年第2期144-146,共3页
Coal Mine Modernization
关键词
高瓦斯
顺层钻孔
穿层钻孔
瓦斯预抽
High gas
Downhole drilling
Through-hole drilling
Gas pre-draining
