Design and effect analysis of mining roadway support under influence of repeated mining
It is difficult to support the mining roadway under the influence of repeated mining.Based on the background of Qiuzi Mine in Xinjiang,this paper optimizes the support design of the mining roadway on 01 working face under repeated disturbance.The main mining influencing stages of 01 lower crossheading include:tunneling stage of roadway itself,mining stage of 02 working face and mining stage of 01 working face.In view of the characteristics of the 01 lower crossheading,combined with the support scheme of A5 and A6 coal seams in the mine,and similar mining technology and mining roadway support scheme under geological conditions,this paper proposes three optimized support schemes.Through the numerical simulation of the support effect of these three support schemes in the mining stage of 01 working face,the stress distribution law and roadway deformation characteristics of 01 working face under each support scheme are obtained,and the optimal support scheme of mining roadway is finally obtained.This study provides a new idea and method for the support design of mining roadway,and has important guiding significance for improving the stability and safety of roadway support.
万方数据
维普
