晋城矿区井上下联合瓦斯抽采工艺及现场应用

Combined gas extraction technology and field application in Jincheng mining area

为了实现寺河矿瓦斯的高效治理,本文提出了针对晋城矿区煤层瓦斯赋存特点的井上下联合抽采技术。开展了晋城矿区井上下联合瓦斯抽采技术的现状分析,并分析了煤层瓦斯的赋存特点,基于煤炭开发时空接替规律,将矿区划分为煤炭生产规划区、煤炭开拓准备区与煤炭生产区3个区间,在时间上体现为煤矿规划区实施地面井预抽、煤矿准备区实施井上下联合抽采、煤矿生产区实施井下瓦斯抽采。以寺河矿为背景开展现场实践,最终消除了煤与瓦斯突出危险性。

In order to realize the efficient control of gas in Sihe Mine,this paper puts forward the combined extraction technology of upper and lower wells according to the characteristics of coal seam gas occurrence in Jincheng Mining Area.The current situation of combined gas extraction technology in Jincheng mining area is analyzed,and the occurrence characteristics of coal seam gas are analyzed.Based on the time-space replacement law of coal development,the coal mine area is divided into three intervals:coal production planning area,coal development preparation area and coal production area.In terms of time,it is reflected in the implementation of surface well pre-drainage in coal mine planning area,the implementation of combined drainage in coal mine preparation area,and the implementation of underground gas drainage in coal mine production area.Taking Sihe Mine as the background,the field practice was carried out,and the risk of coal and gas outburst was finally eliminated.