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TIR GRANDS FOURNEAUX [1 record]

Record 1 2000-09-13

English

Subject field(s)
  • Blasting Work (Mining)
DEF

A term applied to the method of blasting in which large charges are fired in small adits or tunnels driven, at the level of the floor, in the face of a quarry or slope of an open-pit mine.

OBS

Coyote blasting is best adapted to faces from 80 to 175 ft. high, where the surface is irregular and where a large tonnage of rock is to be broken at one blast. In high banks, the use of supplementary churn drill holes, about one-third the depth of the face, gives a more regular line of break.

OBS

coyote-hole blasting: American term for quarry blasting in chambers.

French

Domaine(s)
  • Travail aux explosifs (Exploitation minière)
DEF

Méthode de sautage qui consiste à creuser une galerie à flanc de montagne, à y placer des explosifs et à procéder au sautage.

CONT

Abattage par grands fourneaux.- Cette méthode consiste à creuser au pied de la carrière normalement à la paroi d'une galerie de 1 à 2 m² de section et d'une profondeur égale au moins à la moitié de la hauteur du front, et ensuite à l'extrémité de celle-ci et à angle droit, deux galeries de même section au fond desquelles on place des charges importantes d'explosif qu'on isole par des bourrages soignés [...]

Key term(s)
  • abatage par grands fourneaux

Spanish

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