摘要
针对高瓦斯矿井综放工作面采空区遗煤多、瓦斯含量高、工作面瓦斯浓度易超标的问题,以赵庄二号井2309工作面为工程背景,通过本煤层施工瓦斯抽放钻孔进行预抽、切眼后方煤体裂隙带钻孔抽采和采空区瓦斯顶板裂隙带抽采相结合的方法,进行工作面瓦斯治理,以控制工作面内及上隅角瓦斯浓度,实现煤与瓦斯共采,保证矿井生产安全。
In view of the problems that there are many coal left in the goaf of fully mechanized top coal caving face in high gassy mine, the gas content in goaf is high, and the gas concentration in working face is easy to exceed the standard, taking the 2309 working face of Zhaozhuang No.2 Coal Mine as the engineering background, pre-drainage is carried out through the construction of gas drainage boreholes in this coal seam. The method of combination of borehole drainage in the coal body fracture zone behind the cut and gas roof fissure zone in the goaf is used to control the gas concentration in the working face and in the upper corner of the working face, which realize the co-mining of coal and gas to ensure the safety of mine production.
作者
马杰
辛承鹏
赵军利
Ma Jie;Xin Chengpeng;Zhao Junli(Jinneng Holding Coal Industry Group Zhaozhuang No.2 Well,Shanxi Changzhi 047100)
出处
《山东煤炭科技》
2021年第10期120-122,128,共4页
Shandong Coal Science and Technology
关键词
综放工作面
裂隙带抽采
本煤层抽采
fully mechanized top coal caving face
fracture zone extraction
extraction of this coal seam
