METHOD FOR OPENCAST MINING OF CONTIGUOUS HORIZONTAL AND SLIGHTLY INCLINED SEAMS OF MINERALS Russian patent published in 1997 - IPC

Abstract RU 2093679 C1

FIELD: mining technology. SUBSTANCE: according to method, initially cut are approaching and dividing trenches for overlying seam with dumping rock onto unworked side. Overlying seam is mined by stopes performed over development area with dumping overburden rocks onto sections between seams. Then approaching and dividing trenches are cut for underlying seam. Overburden rocks are transferred from section between seams into worked out space. Underlying seam is mined in reverse direction. On completion of last mining stope, rock is transferred from unworked side into worked out space for restoration of disturbed ground surface. EFFECT: high efficiency. 1 cl, 1 dwg

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RU 2 093 679 C1

Authors

Nechunaev V.N.

Fedorov N.V.

Pozharnikov V.A.

Kontsevoj A.A.

Grushevoj A.S.

Dates

1997-10-20—Published

1992-05-12—Filed