特厚煤层孤岛工作面顺槽卸压技术应用  

Application of Entry Pressure Relief Technology in Island Coal Face of Extra Thick Coal Seam

作　　者：杨勇 Yang Yong(Hongdong Lucheng Coal Industry Co.,Ltd.,Shanxi Coal Import and Export Group,Linfen,Shanxi 041000)

机构地区：[1]山西煤炭进出口集团洪洞陆成煤业有限公司,山西临汾041000

出　　处：《江西煤炭科技》2023年第1期19-21,24,共4页Jiangxi Coal Science & Technology

摘　　要：以8204-2特厚煤层孤岛工作面为工程实例,该工作面回采期间两巷煤岩体受采动应力叠加影响、围岩变形程度大、矿压显现强烈。为解决此问题,拟定对5204-2回风顺槽采用大直径钻孔卸压技术和锚索补强支护、对2204-2运输顺槽采用底板卸压槽卸压技术。该技术应用后,工作面回采巷道围岩变形得到了有效控制,避免了强冲击矿压的发生,实现了工作面的安全回采与快速推进。Taking the isolated island working face of 8204-2 extra thick coal seam as an example,in view of the problems that the coal and rock mass of the two roadways are affected by the superposition of mining stress,the surrounding rock deformation is large,and the strata behavior is strong during the mining of the working face,it is proposed to adopt large diameter borehole pressure relief technology and cable supplement support for 5204-2 return air entry and floor pressure-relieving groove technology for 2204-2 transport entry,which effectively controls the surrounding rock deformation of the mining roadway in the working face,avoids the occurrence of strong rock burst,and realizes the safe mining and rapid advancement of the working face.

关 键 词：孤岛工作面 回采巷道 围岩控制 大直径钻孔卸压 卸压槽卸压 

分 类 号：TD322.5[矿业工程—矿井建设]