Design and Application of Gangue Vertical Feeding System for Mine Fill Mining

In order to solve problems of the land subsidence and the environmental pollution of gangue, the ground gangue vertical feeding system was established by the feeding well, material storehouse, buffer device, and alarm system of whole warehouse and so on, and then applied it into practical engineering.The field test res ults showed that it could well meet the amount of flling gangue of a working face in one cycle when the inner diameter of feeding tube was 486 mm, diameter of the mat erial storehouse was 5 m, and the height was 15 m.It could effectively reduce the impact of flling gangue to material storehouse by using umbrella buffer.The actual dai ly flling gangue reached at2 000 tons.The system solved the problem of environmental pollution resulting from gangue on the ground, and controlled the land subsidenc e effectively, which realized the harmonious development of the mine and ecology.