Study on failure mechanism and supporting parameters of coal-rock roadway in deep well
In order to explore the failure mechanism of the deep semi-coal rock roadway and verify the rationality of the supporting pa-rameters,this paper took the No.211011 return airway of the Shanjiaoshu Coal Mine as the research background,the failure mechanism of deep semi-coal rock roadway was studied,and the supporting parameters were verified in combination with engineering conditions.The results show that the failure of the deep semi-coal rock roadway often starts from the coal seam to the rock layer,the roadway is sub-jected to stress,and the coal seam part is first destroyed,while the rock layer part is destroyed later.When supporting the semi-coal rock roadway in the deep well,it is necessary to increase the supporting strength at the coal seam to ensure the stability of the roadway.The on-site mine pressure observation results indicate that the supporting parameters are reasonable and feasible,which can effectively en-sure the safety production of the working face.
万方数据
维普
