Design on automatic coal refuse backfill and tamping control system of fully-mechanized coal mining face .

In order to improve the automatic control of the production process in the backfill coal mining face and to solve the low production efficiency in the backfill p rocess and the poor backfill quality problem,according to the technical requirements and features of No.12212 backfill coal mining face in Xingdong Mine,with the electro- h ydraulic control technology combined with the coal refuse backfill technology and process,a coordinated control of the feeding mechanism and the backfill and tamping mec hanism was provided and an automatic coal refuse backfill and temping control system of the fully mechanized coal mining face was designed. The automatic control of the backfill process was realized. The system could realize the backfills of several powered supports at same time. The backfill density of the coal mining face was equllibrium and the backill quality was stable.