METHOD FOR MINING THICK STEEPLY DIPPING SEAMS BY HYDRAULIC BREAKING WITH CAST SELF-CEMENTING FILL Russian patent published in 1996 - IPC

Abstract RU 2069752 C1

FIELD: mining. SUBSTANCE: the offered method includes development of extraction field by vent and haulage drifts, cross-entries driven to the central field incline, dividing the level into sublevels by lower and upper sublevel drifts, coal winning by hydraulic giant by stopes along the strike, and supply of cast mixture to worked-out space of each stope by pipeline. Stopes are worked from the upper sublevel drift with formation of inverted face, and then, hole is drilled into the next worked stope between lower and upper sublevel drifts with its subsequent hydraulic breaking. EFFECT: higher efficiency. 5 dwg

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RU 2 069 752 C1

Authors

Lukashev G.E.

Torf Ju.D.

Skopin S.G.

Khan V.V.

Fajner I.A.

Odinokov B.P.

Razumnjak N.L.

Dates

1996-11-27Published

1993-09-27Filed