On the problem of mining thin coal seams in unmanned working face

This article is mainly for the interpretation and debate of the "Ukrainian Coal " magazine 2006, No3 "unmanned face mining thin coal seam unit" oppositionists. 70% ~ 80% of the Donbass coal field is thin coal seam (0.8 m below), and the gas concentration is very high. Therefore, it is very necessary to unmanned mining these thin coal seams. The coal seams in Poland <1. 5 are thin coal seams, which are not conducive to mining and are not allowed to work in the mining face of such coal seams. The unit of АФШВ type multi-function front spiral mining coal is introduced, and the advantages of the unit are described. The advantages are: according to the rapid process, no one can exploit the thin coal seam (below 0.4 m) in the working face; the new coal processing system is cut; the end process in the working face is eliminated; the "gas barrier" in the gas emission is eliminated "No need to ventilate the work surface (new ventilation); always advance straight along the work surface; no mechanical support for the roof; simple and fully automated structure; low cost and high efficiency (1 000 t).

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