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GOAF [7 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-03-16

English

Subject field(s)
  • Mining Operations
DEF

The worked-out area in a mine.

OBS

Goaf is probably derived from the Welsh gof [meaning] cove.

PHR

Gap in the unconsolidated goaf.

Key term(s)
  • goaves

French

Domaine(s)
  • Exploitation minière
DEF

Partie du gisement récemment exploitée.

PHR

Vide dans les vieux-travaux.

Spanish

Campo(s) temático(s)
  • Explotación minera
Save record 1

Record 2 2005-04-01

English

Subject field(s)
  • Extraction Procedures - Various (Mining)
DEF

That part of a mine from which the coal has been worked away and the space more or less filled up.

PHR

Stowed goaf.

French

Domaine(s)
  • Procédés d'extraction divers (Exploit. minière)

Spanish

Campo(s) temático(s)
  • Distintos procedimientos de extracción (Explotación minera)
Save record 2

Record 3 1999-05-11

English

Subject field(s)
  • Mining Equipment and Tools
  • Lignite, Graphite and Coal Mining
DEF

A cutter-loader based on the plough principle and designed to cut coal which is too hard for the ordinary plough. Two vertical blades, fitted one at each end of the machine, carry cutting picks which shear the coal from the face by an oscillating motion. The machine is hauled backward and forward along the face by a chain haulage mounted on the tail end of the conveyor. The conveyor and slicer are held up to the coal by pneumatic rams spaced along the goaf side of the conveyor. The sheared coal is forced from the face by the wedge shape of the machine and is loaded on to the armoured conveyor by means of specially shaped ramps. The machine has been designed for seams with a minimum thickness of 4 ft and has a maximum cutting depth of 14 in.

Key term(s)
  • activated plow
  • activated coal plow

French

Domaine(s)
  • Outillage et équipement (Exploitation minière)
  • Exploit. de charbons fossiles autres que la tourbe
CONT

Le rabot activé. La firme anglaise Huwood construit un rabot activé dont les pics, animés d'un mouvement de translation, frappent le massif à la manière de l'aiguille d'un marteau piqueur. L'appareil est alimenté à la fois en courant et en air comprimé. Plusieurs versions en ont été réalisées. Malgré de sérieuses difficultés, il est possible qu'il y ait là une voie intéressante.

Spanish

Save record 3

Record 4 1999-05-11

English

Subject field(s)
  • Mining Operations
CONT

Three main systems of methane drainage have been developed :(1) the cross-measure borehole method which consists of boring holes from 2¼ to 3¼ inches in diameter and 150 to 300 feet in length, into the strata above or below the seam, generally close to the working face. This method has the advantage of being suited to a wide variety of conditions and does not require another seam within reasonable distance above or below the seam to be drained, or the use of solid stowing;(2) the superjacent roadway system in which boreholes are drilled from a roadway situated above the seam being worked, the drainage of the methane then taking place from this roadway; and(3) the pack cavity system in which corridors are left and supported in the goaf as the face advances, and from these firedamp is drawn off.

Key term(s)
  • fire damp drainage

French

Domaine(s)
  • Exploitation minière
CONT

Le captage du grisou est réalisé en creusant de longs trous, soit à partir de la surface, soit à partir des galeries de reconnaissance du gisement, en direction des couches de charbon. Le gaz ainsi récupéré, principalement du méthane, est utilisé comme combustible; en outre, l'exploitation ultérieure du gisement est facilitée par la réduction des dégagements du grisou dans les galeries et chantiers.

Spanish

Save record 4

Record 5 1998-09-29

English

Subject field(s)
  • Geological Research and Exploration
  • Mining Operations
DEF

An area of goaf too small to cause full subsidence of the surface.

French

Domaine(s)
  • Recherches et prospections géologiques
  • Exploitation minière
Key term(s)
  • aire d'extraction partielle

Spanish

Save record 5

Record 6 1998-09-29

English

Subject field(s)
  • Geological Research and Exploration
  • Mining Operations
DEF

An area of goaf of sufficient extent to cause full subsidence at more than one point on the surface.

French

Domaine(s)
  • Recherches et prospections géologiques
  • Exploitation minière
Key term(s)
  • aire d'extraction surabondante

Spanish

Save record 6

Record 7 1976-06-19

English

Subject field(s)
  • Mining of Organic Materials
  • Mining Wastes
OBS

gob :goaf

French

Domaine(s)
  • Exploitation de matières organiques (Mines)
  • Déchets miniers

Spanish

Save record 7

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