Applying the method of malfunction tree analysis in reliability design,the cause of rope-breaking in vertical mine skip hoisting system is analyzed,and measure preventing from rope-breaking is bring forward,which will help improving the security in vertical mine skip hoisting system.

This paper introduces the characteristics of steel wire ropes used in the inclined-tunnel's lifting conveyance,analyzes on the main reasons of the rope-broken accident of hydraulic support in fully mechanized coal mining face,and advances some measures for preventing the accident.