Study on the Filling Technology of Abandoned Roadway at Residual Mining Area

Abstract

Aiming at the problems of unreasonable mining plan, serious waste of coal resources, the material based on fly ash for filling the residual mining area was developed. Then the ground pulp system, underground transportation and filling system were designed. As a result the safe mining at old mining area was realized. The management technique provided a new way for resource integration mines with many abandoned roadways.