Research On Failure Mechanism And Control Technology Of Surrounding Rocks In Dynamic Pressure Roadway

This paper,Base the background of Tong-Ting109main roadway and1095coal face,have adopt combinative ways of academic analyze,laboratory similar simulation,numerical simulation and real practice,for mining under the influence of surrounding rock deformation mechanism and control technology research. Based on the elastic-plastic theory is deduced under the influence of mining roadway damage mechanics model,the relationship between the roadway support and wall rock deformation are obtained.Using similar material simulation of physics to the protection and different width coal pillars on the working plane caving law of overlying strata,the lateral abutment pressure distribution rule and effect on roadway for quantitative research.using FLAC3D numerical simulation software,System for different stay wide protection coal pillar in mining under the influence of orbit alleys and lateral abutment pressure distribution rule is studied,it is concluded that this protective coal pillar is not reasonable cause deformation of roadway surrounding rock is serious. Set of roadway surrounding rock control scheme,and through analyzing the measured data from on the spot,it is concluded that the scheme can effectively control deformation of roadway surrounding rock,for the similar geological conditions to provide experience for the control of surrounding rock of roadway.