【摘要】 通过对四矿戊九皮带下山巷道变形破坏原因进行分析,提出采用卸压手段结合锚、注联合支护技术对老巷进行修复,从而控制了巷道的持续变形和底鼓,解决了大埋深高应力多次返修老巷支护难题。更多还原

【Abstract】 Through analysis on the deformation causes to the C9 downward conveyor roadway in the No.4 mine of Pingdingshan Coal Group,a proposal of combining pressure discharge with bolting & grouting support is made to rehabilitate the used roadway,thus stopping the continuation of the deformation and floor heave and solving the supporting problem for the deep used roadway with high stress through several repairs.更多还原