METHOD FOR DETECTION AND RANGING OF UNDERGROUND FIRE SEATS Russian patent published in 1994 - IPC

Abstract RU 2012820 C1

FIELD: mining. SUBSTANCE: method includes drilling holes and check holes and gas survey, which is repeated after periodic increase of thickness of air impermeable layer applied to surface. In this case, depth of holes exceeds thickness of entire air impermeable layer. Gas survey is continued up to increase of indicating gas concentration, and fire seat is detected under point with maximum rise of gas concentration as compared with initial value. EFFECT: higher efficiency. 1 dwg

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RU 2 012 820 C1

Authors

Portola V.A.

Gutter A.A.

Lagutin V.I.

Dates

1994-05-15—Published

1990-12-25—Filed