Experimental study on the bolt–cable combined supporting technology for the extraction roadways in weakly cemented strata  

作　　者：Meng Qingbin Han Lijun Sun Jingwu Min Fengqing Feng Wei Zhou Xing 

机构地区：[1]State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology [2]Resources Power Coal Industry Co., Ltd.

出　　处：《International Journal of Mining Science and Technology》2015年第1期113-119,共7页矿业科学技术学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (Nos. 51174196, 51204168, 51109209 and 51309222);the Youth Fund Project of Jiangsu Province Natural Science Foundation (No. BK20130193)

摘　　要：Aiming at the characteristics of the poor steady ability, the short stable time and severe deformation behavior of weakly cemented soft surrounding rock around extraction roadway, a bolt–cable combined supporting technology was proposed. Numerical simulation was performed by using FLAC3 D software to study the effects of different supporting systems. The simulation result proves that those supporting systems have good practical values. Based on real-time monitoring and analysis of the deformation of surrounding rock and the stress of supporting structure, real time information of deformation of surrounding rock and stress state of supporting structure of extraction roadway within weakly cemented strata was obtained. Monitoring results show that large deformation and failure of surrounding rock of extraction roadway within weakly cemented strata can be effectively controlled by the bolt–cable combined supporting technology, which ensures the long-term stability and safety of surrounding rock and supporting structure.Aiming at the characteristics of the poor steady ability, the short stable time and severe deformation behavior of weakly cemented soft surrounding rock around extraction roadway, a bolt-cable combined supporting technology was proposed. Numerical simulation was performed by using FLAC3D software to study the effects of different supporting systems. The simulation result proves that those supporting systems have good practical values. Based on real-time monitoring and analysis of the deformation of surrounding rock and the stress of supporting structure, real time information of deformation of sur- rounding rock and stress state of supporting structure of extraction roadway within weakly cemented strata was obtained. Monitoring results show that large deformation and failure of surrounding rock of extraction roadway within weakly cemented strata can be effectively controlled by the bolt-cable com- bined supporting technology, which ensures the long-term stability and safety of surrounding rock and supporting structure.

关 键 词：Weakly cemented strataExtraction roadwayBolt-cable combined supporting technologyReal-time monitoring 

分 类 号：TD353[矿业工程—矿井建设]