Bases on the promotion of mechanized caving mining technology without the ability to solve nearly 400, 000 t boundary coal , coal pillar, etc., focusing on improving the recovery of coal resources issues, the mine produced a residual mining layout recycling mine planning. For the formation of tilt length of less than 50 m of residual coal tilt cylinder length was short,  difficult to organize efficient production practice, the practice of efficient production processes were  actively explore to improve resource recovery and get efficiency purpose.