关键词: 井巷工程, 深部开采, 高应力巷道, 围岩变形破坏, 支护对策

Abstract: The roadway engineering is the throat engineering of mining deep resources, and it is the logistics channel connecting the surface and underground space. Due to the influence of surrounding goaf, coal pillar and mining face, deep high stress roadway is often in a very complex stress state, showing various special failure characteristics. Taking the -850 m west roadway of Qujiang Coal Mine as the research object, the deformation and failure modes of roadway during mining are analyzed through field investigation, stress monitoring of bolt and anchor cable and deformation monitoring of surrounding rock. The deformation and failure of surrounding rock in deep high stress roadway under mining are divided into rear continuous ( high pressure ) deformation zone and front disturbance ( dynamic pressure ) deformation zone. According to the failure modes of different zones under mining, it is proposed to implement the ' three anchors ' combined support technology in the rear continuous ( high pressure ) deformation zone, and the support concept of combining resistance and yield in the front disturbed ( dynamic pressure ) deformation zone. The observation and analysis of the repair section show that the determined partition combined support scheme is reasonable and effective to ensure the long-term stability of deep high stress roadway under mining.

Key words: Tunnel engineering, Deep mining, High stress roadway, Rock deformation and failure, Supporting measures