Study On Mine Groundpressure Feature And Control Technology Of Surrounding Rock Of Deep Coal Mining

This paper take the 1262(1)working face of HuaiHu coal-electricity company Dingji Coal Mine as the project background. Though many research techniques such as the computer numerical simulation and field measurement, analysis of mining groundpressure feature and control technology of surrounding rock in deep mining, and adopt FLAC3D to carry out the numerical simulation on different depth stope, analyse on advance supporting pressure,horizontal stress,width of plastic zone and lateral supporting pressure of shallow mining stope comparing with deep mining. through field measurement came to conclusion that the affected zone of the lead abutment pressure,the adaptability of support and surrounding rocks,initial stage roof weighting length in deep mines.According to the mechanical equation, analysis of the relationship between supporting pressure,crushing zone of coal wall and mining depth, conclusion that the mechanism of coal wall caving in deep mining. According to those mine groundpressure feature in deep mining ,then puts forward the control technology of stope roof fall,coal wall caving and roadway deformation, provide guidance for safety and high effective product in deep mining stope.