Study on failure mechanism and control measure of deep intersecting roadway

According to the problem that the deep intersecting roadways damage seriously and are unstable under complex high-stress field,this paper investigates the engineering geological conditions and failure phenomena of the deep intersecting roadway of Xing'an coal mine in Hegang mine,summarizes the main failure reasons based on the results of numerical analysis:high stress and mutual disturbance during excavation of the intersecting roadway,then puts forward the control measures that optimize roadway layout and support as the main of the bolt rope + three-dimensional truss.It is concluded from the results of engineering application that this control measure can control roadway deformation effectively and ensure the stability of the intersecting roadway.