METHOD OF COMBINED MINING OF SERIES OF CONTIGUOUS BEDS Russian patent published in 2003 - IPC

Abstract RU 2211331 C2

FIELD: mining industry. SUBSTANCE: method includes carrying out of stripping and mining operations on beds for opencast mining, driving of underground opening and development workings, and carrying out of stoping operations on underlying contiguous bed designed for underground extraction. Stoping working on underlying bed is driven with leading of opencast mining on overlying beds with roof control by full caving and leaving of nonslotted coal pillars. AS breakage face advances with roof caving, worked-out space is filled through holes drilled from surface with silting material to plug formed cavities. EFFECT: reduced losses of mineral and no necessity of support of extended mine workings. 3 dwg

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RU 2 211 331 C2

Authors

Vasil'Ev P.N.

Zubkov V.P.

Dates

2003-08-27Published

2001-06-28Filed