Characteristic And Application On Rock-burst Behaviour In Caving Mining

This paper has system researched the stress distribution characteristic of caving mining and reveal underground pressure appearing regularity with the workface of fully mechanized caving mining .It has analysed the case of rock-burst in dong tan colliery ,drew the reason condition of realized and control criterion of rock-burst .The floor structural mechanical model with caving mining has been established. According to contrast, this text has researched the distribution characteristic of abutment pressure in top-slice mining and caving mining ,the stress has obviously reduced with the distribution field of abutment pressure increased in caving mining ; In releasing elastic energy ,The elastic energy has been released in advance to coal seam of caving mining ,and released in succession to slow down the elastic kinetic energy as floor pressed. But in the top slice mining ,the floor pressed was relevantly with the elastic energy, the energy was released insufficiently. According to the concrete coal seam condition, based on appearing law of rock-burst with caving mining . The risk of burst with the detached island has appraised , the rational mining scheme was put forward and be verified practicing by the project...