巷道过陷落柱冒漏区支护优化应用  

Application of Optimisation of Support for Roadway Over Trapped Column Venting Zone

作　　者：杨亭 Yang Ting(Shanxi Gaoping Kexing Pingquan Coal Co.,Ltd.,Gaoping Shanxi 048400,China)

机构地区：[1]山西高平科兴平泉煤业有限公司,山西高平048400

出　　处：《机械管理开发》2024年第8期323-325,共3页Mechanical Management and Development

摘　　要：基于平泉煤矿153回风巷掘进期间受X4陷落柱影响,进入陷落柱区后顶板出现破碎冒漏现象,导致巷道顶板支护难度大、锚杆(索)支护失效严重以及围岩变形严重等技术难题,通过技术研究,对陷落柱区顶板及两帮支护进行合理优化,对顶板采取“双梁钢棚+迈步式组合锚索+走向锚索棚”联合支护措施,对帮部围岩提出了“穿帮锚索+水力膨胀锚杆”联合支护,通过实际应用效果来看,采取联合支护技术后,顶板及帮部变形速率及变形量明显降低,顶板最大下沉量为175 mm,两帮最大收敛量为240 mm,取得了显著应用成效。Based on the influence of X4 fallen pillar during the tunneling of 153 return air lane in Pingquan coal mine,the roof plate is broken and leakage phenomenon occurs after entering into the fallen pillar area,which leads to the difficulty in supporting the roof plate of the roadway,the failure of the anchor rods(ropes)and the deformation of the surrounding rock and other technical difficulties,through technical research,the roof plate of the fallen pillar area and the two gangs of the support are reasonably optimised,and the roof plate adopts the"double-beam steel shed+step combination anchor ropes+walking anchor ropes shed".Through the technical research,we optimise the support for the roof and the two gangs in the trapped column area,and adopt"double beam steel shed+step combination anchor cable+towards anchor cable shed"joint support measures for the roof,and"through the gang anchor cable+hydrodynamic expansion anchor"joint support for the peripheral rock of the gangs,and through the actual application effect,the deformation rate and deformation amount of the roof and gangs are significantly reduced after the adoption of the joint support technology,with the maximum subsidence of the roof being 175 mm,and the maximum deformation of both gangs being 175 mm.After adopting the joint support technology,the deformation rate and deformation amount of the roof and the gang were significantly reduced,the maximum sinking amount of the roof was 175 mm,and the maximum convergence amount of the two gangs was 240 mm,which achieved remarkable application results.

关 键 词：陷落柱 围岩破碎区 联合支护 

分 类 号：TD353[矿业工程—矿井建设]