Practice of Cutting and Driving Technology for No.8 Coal Seam of Carboniferous under Method of Leaving Tunnels Along Gob in Datong Mining Area
In response to the influence of factors such as large cross-section,roof cutting and pressure relief along goaf,and periodic pressure during the excavation of No.8 Coal Seam of Carboniferous,which may lead to the occurrence of mining pressure phenomena such as bottom bulge,roof subsidence,and coal wall deformation in adjacent working faces,the"same before different leveling"excavation process is adopted to achieve safe and rapid excavation,And it has been applied in the 8105 working face of No.8 Coal Seam of Carboniferous at Jinneng Coal Industry Group Tongxin Coal Mine,creating an economic benefit of about 100000 yuan.
Mining without pillarCutting and drivingSafe and fast
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