松软煤层动压巷道变形破坏特征及加固技术研究  

Deformation and Failure Characteristic of Dynamic-pressure Roadway in Soft Coal and Reinforcement Technology

作　　者：李树刚[1,2] 成小雨[2] 刘超[1,2] 张天军[3] 邢立杰[2] 王辉[2] 

机构地区：[1]西部矿井开采及灾害防治教育部重点实验室,陕西西安710054 [2]西安科技大学能源学院,陕西西安710054 [3]西安科技大学理学院,陕西西安710054

出　　处：《煤矿开采》2014年第5期51-54,32,共5页Coal Mining Technology

基　　金：国家自然科学基金项目(51174157;51104118;51304154);陕西省博士后基金资助项目(陕博管办[2013]10号-2-76)

摘　　要：余吾煤业S2206工作面进风巷处于松软煤层中,受工作面采动影响围岩变形破坏较严重。通过分析原有支护条件下巷道的变形破坏特征,结合现场实际提出了锚喷注联合支护加固方案,并进行全方位矿压监测。监测结果表明:采用加固后巷道围岩变形得到有效控制,塑性区显著减小,锚索受力处于较佳状态,充分发挥了支护体的承载能力,能够保证巷道的长期稳定。Intake airway of S2206 mining face in Yuwu Coal Company was in soft coalseam. Influenced by mining, deformation and fail-ure of surrounding rock was serious. By analyzing deformation and failure characteristic of former supporting project, a combined rein-forcement project of anchored grouting and injecting was put forward and all-around underground pressure monitoring was made. Monitoring result showed that after applying reinforcement project, surrounding rock deformation was controlled effectively, plas-tic-zone reduced largely, anchored cable was in best stress state and fully produced bearing capacity of supporting body, which could keep long-term stability of roadway.

关 键 词：松软煤层 动压巷道 破坏特征 锚喷注 矿压监测 

分 类 号：TD353[矿业工程—矿井建设]