Research On Failure Mechanism And Supporting Countermeasure Of Deep Roadway Surrounding Rock

The breakage and deformation of deep roadway still serious since stress forming complex, the conditions influencing on surrounding rock aggravating and the vary surrounding rock. So it is still necessary to research on deformation, damaging mechanism and supporting countermeasure for all kinds of surrounding rock in deep high complex stress conditions. In this dissertation, combined the ways such as laboratory research, model test, theoretical analysis, numerical calculation and situ observations etc., to research the micro-components, mechanical parameters, deformation and damaging mechanism, the using main construct model, supporting technology and optimizing scheme for the vary deep rock mass. Based on the influence of wall rock to supporting form and effect, it classified the deep wall rock to four kinds of high stress integral surrounding rock, more integral bedded surrounding rock, loosened surrounding rock, and soft surrounding rock. Based on the classified scheme, compartmentalized the four kinds wall rock to apart bedding rupture and pressure releasing engineering soft rock, and research their deformation characteristic and destroy mechanism, and bring foreword the supporting countermeasure and the theory of "firm and flexible coupling, long and short supporting material integrating, active and in-time supporting, corresponding and deformation controlling". The "once in-time support resisting suppress" high strength supporting technology was advanced to deal with the apart bedding rupture engineering soft rock. These technologies applied in represented mines and gained well effect.