METHOD FOR OPENCAST MINING OF SOLID MINERALS Russian patent published in 1994 - IPC

Abstract RU 2015330 C1

FIELD: opencast mining. SUBSTANCE: zone of loosening on both sides of contact are formed with different loosening coefficient. Loosening zone of high coefficient is formed from lying wall of contact. Holes on contact sides are drilled into foot, with depth of holes, whose bottom lies in contact lying wall, being increased towards rock mass. EFFECT: extended technological potentialities of method. 2 cl, 7 dwg

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RU 2 015 330 C1

Authors

Mining S.Eh.

Elin A.N.

Chmykhalov V.S.

Puzenko A.S.

Gusev V.P.

Dates

1994-06-30—Published

1990-10-18—Filed