华泓煤业9306工作面沿空留巷无煤柱开采技术  

Non-pillar mining technology of gob-side entry retaining in 9306 working face of Huahong Coal Industry

作　　者：张青 Zhang Qing(Yicheng Huahong Coal Co.,Ltd.,Linfen 043500,China)

机构地区：[1]翼城华泓煤业有限公司,山西临汾043500

出　　处：《煤炭与化工》2022年第12期25-30,共6页Coal and Chemical Industry

摘　　要：华泓煤业以往工作面区段保护煤柱宽度20 m,造成了大量煤炭资源浪费。为了改变这一现状,拟对该矿9306工作面实施切顶卸压与沿空留巷技术,利用FLAC3D软件进行模拟结果分析。针对巷道支护不足问题,采取高强预应力锚索补强支护顶板。通过对9306巷道变形情况进行监测,表明其变形量均在可控范围内。实施切顶卸压和沿空留巷技术后,提高了工作面资源回收率,保证了安全开采。Huahong coal industry in the past working face section protection coal pillar width of 20 m,resulting in a lot of waste of coal resources.In order to change this situation,the technology of roof cutting and pressure relief and gob-side entry retaining in 9306 working face of the mine is proposed,and the simulation results are analyzed by FLAC3D software.Aiming at the problem of insufficient roadway support,high strength prestressed anchor cable is adopted to reinforce the roof.By monitoring the deformation of 9306 roadway,it shows that the deformation is within the controllable range.After the implementation of roof cutting pressure relief and gob-side entry retaining technology,the recovery rate of working face resources is improved to ensure safe mining.

关 键 词：沿空留巷 切顶卸压 技术参数 

分 类 号：TD32[矿业工程—矿井建设]