Anchored structure technology of loosen soft seam with big dip angle in compound roof

摘要

There is the uncertainty of tilting angle of coal seam, large variation of thickness of top coal in Taiping Coal Mine +-700 m level.It caused many difficulties to the production and management, In view of the coal seam occurrence condition of 32151 working face, it is analyzed based on the coal seam thickness, dip angle, the seam roof and floor conditions, working face management difficulty, coal quality and safety condition, the effective method of greater inclined full-mechanized coal seam is proposed.The mine has carried on the detailed supporting design to the first fully mechanized caving face with the Dynamic system design method of the bolt support, that is FLAC3D finite difference numerical simulation software.The Safe and efficient mining of the first sub-level caving mining working face is smoothly realization.