FIELD: methods of underground mining, particularly for brown or hard coal mining along with goaf filling.
SUBSTANCE: method involves cutting horizontal layers in strips along the strike by mechanical hydraulic breaking thereof along with rock mass transportation and cuts filling with poured hardening filler, wherein holes for following combined filler supply into goaf are left in the cuts. The seam is cut in strips in descending order so that drifts and chambers are left in underlaying strips. Next strip is cut by hydraulic monitor. Rock from hopper is moved by conveyer out of flexible roof into goaf and impregnated with poured hardening filler during preparation mine filling.
EFFECT: reduced labor inputs and increased safety.
6 dwg
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