Roof Control of Full-mechanized Mining Face with Large Mining Height in Baidong Colliery

Although the immediate roof of Baidong Colliery is relatively soft,its basic roof is glutenite and difficult to control.Test mining proved that for full-mechanized mining with large mining height,if only caving method was used to control roof,it might result in that all kinds of basic roof could not cave regularly,which would restrict regular production.This paper put forward that applying deep-hole blasting and slotting in roof to artificially caving in Baidong Colliery,which was proved by practice on-the-spot.It presented adaptable roof control technology for full-mechanized mining with large mining height in Baidong Colliery.