Abstract: There are some problems in moving house. For example, it is complex and time-consuming asthe traditional fully mechanized working face is parallel to the working face of coal wall or faults with anoblique fall greater than the mining height. Hydraulic support work face with integral roof beam combinedwith suspension will expand and the working face roof pressure will increase when meeting with water incarbonaceous mudstone floor. To effectively solve these problems , the current study replaces the wholetop beam with the light support hydraulic support, which addresses the problems above, and improvesthe technical and economic benefits of the enterprise.

Key words: light support type hydraulic support, complex mine structure, fully mechanized