Technology of grouting-shotcrete support in fault fracture zones in Linnancang coal mine and the application

On the basis of comprehensive analysis and research deformation mechanism and failure reasons of Fault fracture zone of -650 air return roadway in Linnancang Coal Mine.Take the measure of "Grouting-Shotcrete Support",it demonstrated used to numerical simulation.Internal structure of roadway surrounding rock of drilling observed,and the supporting effect of roadway displacement be monitor.The results show that it can improve the force structure and effectively control the deformation and failure of roadway, then ensure the mine safety production.