深部回采巷道变形破坏机理及围岩控制技术研究  

Deformation and Failure Mechanism and Surrounding Rock Control Technology of Deep Mining Roadways

作　　者：刘桥 LIU Qiao(Coal Business Unit,Jinneng Holding Equipment Manufacturing Group Co.,Ltd.,Jincheng 048000,Shanxi,China)

机构地区：[1]晋能控股装备制造集团有限公司煤炭事业部,山西晋城048000

出　　处：《能源与节能》2024年第10期171-174,共4页Energy and Energy Conservation

摘　　要：为解决赵庄煤矿深部回采巷道变形破坏严重和维护困难的问题,对13113巷道的变形特征及破坏机理进行了分析,其变形破坏原因具体包括工作面地应力增大、多重强动压影响、锚杆(索)支护整体性较差等。现场采用了“深浅孔注浆+锚索补强耦合”的支护技术,矿压监测数据表明,补强加固后的13113巷两帮最大移近量为65 mm,顶板最大下沉量为38 mm,底板最大移近量为18 mm,巷道围岩变形量与加固之前相比大幅减小,充分表明该支护技术可以有效控制巷道围岩的变形。In order to solve the problems of deformation,damage,and maintenance difficulties in the deep mining roadway of Zhaozhuang Coal Mine,the deformation characteristics and failure mechanism of 13113 roadway were analyzed.The main reasons for deformation and damage were the combined effects of multiple factors such as increased ground stress in the 1311 working face,multiple strong dynamic pressures,and poor overall support between bolts(cables).The support technology of"deep and shallow hole grouting+anchor cable reinforcement"was adopted on site.The on-site mine pressure monitoring data showed that after reinforcement,the maximum displacement of the two sides of 13113 working face was 65 mm,the maximum subsidence of the roof was 38 mm,and the maximum displacement of the floor was 18 mm;the deformation of the surrounding rock of the roadway was significantly reduced compared to before reinforcement,fully indicating that the coupling support of deep and shallow hole grouting and anchor cable reinforcement effectively controlled the deformation of the surrounding rock of the roadway.

关 键 词：深部回采巷道 破坏机理 围岩变形 支护技术 

分 类 号：TD322[矿业工程—矿井建设] TD353