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Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 DEF

A system of mining in which the distinguishing feature is the winning of 50 percent or more of the coal or ore in the first working. The coal or ore is mined in rooms separated by narrow ribs or pillars. The coal or ore in the pillars is won by subsequent working, which may be likened to top slicing, in which the roof is caved in successive blocks. The first working in rooms is an advancing, and the winning of the rib(pillar) a retreating method. The rooms are driven parallel with one another, and the room faces may be extended parallel, at right angles, or at an angle to the dip.  1, fiche 1, Anglais, - room%2Dand%2Dpillar

Record number: 1, Textual support number: 1 OBS

barrier system: Term used in the North of England.  6, fiche 1, Anglais, - room%2Dand%2Dpillar

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 CONT

Exploitation par chambres et piliers. Dans une première phase, le traçage, on creuse dans l'épaisseur de la couche une série de galeries parallèles de 4 à 6 m de large; ce sont les chambres, entre lesquelles subsistent des massifs de charbon, percés par de courtes recoupes allant d'une chambre à l'autre afin de faciliter l'aérage et le déplacement du matériel; ce sont les piliers. La deuxième phase comporte l'exploitation en rabattant du charbon des piliers; c'est le dépilage, qui se fait par un court chantier dans chaque pilier; le foudroyage des vides produits par les chantiers de dépilage est la règle.  5, fiche 1, Français, - exploitation%20par%20chambres%20et%20piliers

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 DEF

The sudden failure of walls or pillars in a mine caused by the weight or pressure of the surrounding rocks, and accompanied by a violent release of energy.  7, fiche 2, Anglais, - rock%20burst

Record number: 2, Textual support number: 1 CONT

Rock bursts. In areas of very deep mining, as additional weight is supported by the pillars on the coal face, stresses may so build up that the yield point is reached. If the coal pillars, the roof, or the floor are able to yield gradually, the effects of the stresses are relieved by floor heaving, or by pillar or roof failure. Where the coal or the associated rocks are particularly strong and depths are much above average, these stresses may be relieved by rock bursts, which are relatively violent outbursts of the coal into the rooms and entries. Frequently, a large volume of gas(usually methane) is suddenly released during a rock burst in a coal mine.  8, fiche 2, Anglais, - rock%20burst

Record number: 2, Textual support number: 1 OBS

for "coal burst" : Rock bursts and "coal bursts" in coal mines are generally designated by the term "bumps" or "bounces". A large proportion of these "bumps" or "bounces" are actually "coal bursts" due to fracturing of pillars and remnants and need not involve any fracturing of roof or floor rock.  4, fiche 2, Anglais, - rock%20burst

Record number: 2, Textual support number: 2 OBS

for "air blast" : In former years rock bursts were sometimes referred to as "air blasts". This name originated from the fact that large quantities of rock loosened by some of the larger rock bursts displaced quantities of air, with the result that a blast of air passed through the mine workings.  4, fiche 2, Anglais, - rock%20burst

Fiche 2,  Justifications,  Français

Record number: 2, Textual support number: 1 DEF

[...] dislocation des piliers de charbon soutenant le toit, avec projections de charbon et parfois soulèvement du mur, plus tendre, jusqu'à venir toucher le toit.  5, fiche 2, Français, - coup%20de%20toit

Record number: 2, Textual support number: 1 OBS

[Le coup de toit peut] mettre en danger l'outillage et le personnel.  4, fiche 2, Français, - coup%20de%20toit

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 DEF

The recovery or working away of the pillars of coal which were left during the first operation of working ...  5, fiche 3, Anglais, - pillar%20extraction

Fiche 3,  Justifications,  Français

Record number: 3, Textual support number: 1 DEF

Phase de l'extraction souterraine, comportant l'abattage et l'enlèvement de la plus grande partie du minerai contenu dans les piliers.  3, fiche 3, Français, - d%C3%A9pilage

Record number: 3, Textual support number: 2 DEF

Opération principale de l'exploitation minière, qui comporte l'abattage et l'évacuation (déblocage) de la plus grande partie du minerai. (Une faible partie de ce minerai a déjà été enlevée lors des travaux préparatoires et dans la phase de reconnaissance, et parfois aussi dans une phase de traçage des panneaux).  4, fiche 3, Français, - d%C3%A9pilage

Fiche 3,  Justifications,  Espagnol

Record number: 3, Textual support number: 1 DEF

Operación consistente en beneficiar los pilares de mineral que se habían dejado para sostener el techo de la mina en el curso de la primera fase de la explotación por galerías cruzadas.  3, fiche 3, Espagnol, - despilaramiento

Fiche 4,  Justifications,  Anglais

Record number: 4, Textual support number: 1 CONT

Flat room-and-pillar mining.... applicable to tabular mineralization with horizontal to moderate dip at an angle not exceeding 20°.  1, fiche 4, Anglais, - flat%20room%2Dand%2Dpillar%20mining

Fiche 4,  Justifications,  Français

Record number: 4, Textual support number: 1 OBS

On trouve «chantier à coupe horizontale» (en anglais : «flat-back stope») dans le Glossaire des termes miniers de A.S. Romaniuk (MINES, 1989, p. 12). Voir aussi «room-and-pillar (mining)» dans TERMIUM.  1, fiche 4, Français, - exploitation%20par%20chambres%20et%20piliers%20%C3%A0%20coupe%20horizontale

Fiche 4,  Justifications,  Espagnol

Fiche 5,  Justifications,  Anglais

Record number: 5, Textual support number: 1 OBS

Inclined room-and-pillar applies to tabular mineralization with an angle or dip from 15° and 30° to the horizontal.  1, fiche 5, Anglais, - inclined%20room%2Dand%2Dpillar%20mining

Fiche 5,  Justifications,  Français

Record number: 5, Textual support number: 1 OBS

Voir aussi «room-and-pillar (mining)» dans TERMIUM.  1, fiche 5, Français, - exploitation%20par%20chambres%20et%20piliers%20par%20coupes%20inclin%C3%A9es

Fiche 5,  Justifications,  Espagnol

Fiche 6,  Justifications,  Anglais

Record number: 6, Textual support number: 1 CONT

Primary stopes are backfilled with cemented rock fill produced by spraying a cement-fly ash slurry on the rockfill before it is distributed to the stopes. The cemented rockfill hardens into a solid mass forming an artificial pillar for mining the secondary stope. The cement slurry is generally not required when secondary stopes are backfilled, except for the last pours to establish a firm mucking floor.  1, fiche 6, Anglais, - cemented%20rock%20fill

Record number: 6, Textual support number: 1 OBS

rock filling: Waste rock, used to fill up worked-out stopes to support the roof.  2, fiche 6, Anglais, - cemented%20rock%20fill

Fiche 6,  Justifications,  Français

Record number: 6, Textual support number: 1 DEF

[...] introduction de ciment dans les matériaux de remblayage pour assurer leur consolidation et améliorer leur comportement mécanique sous la pression des terrains.  1, fiche 6, Français, - cimentation%20des%20remblais

Fiche 6,  Justifications,  Espagnol

Fiche 7,  Justifications,  Anglais

Record number: 7, Textual support number: 1 DEF

In underground mining, the weight of rock above an excavation which has been transferred to the adjoining walls.  1, fiche 7, Anglais, - abutment%20load

Record number: 7, Textual support number: 1 CONT

front abutment pressure  2, fiche 7, Anglais, - abutment%20load

Record number: 7, Textual support number: 2 CONT

Faulty pillar recovery methods and removal of more coal than permitted by the plan's design allowed lateral or abutment pressures from the gob to overcome the mine roof at the location of the continuous mining machine while mining was being conducted.  3, fiche 7, Anglais, - abutment%20load

Record number: 7, Textual support number: 3 CONT

The closer the abutment pressures are to the longwall face, the greater the spalling.  4, fiche 7, Anglais, - abutment%20load

Fiche 7,  Justifications,  Français

Record number: 7, Textual support number: 1 PHR

charge de culée avant; charge de culée arrière  2, fiche 7, Français, - pression%20de%20cul%C3%A9e

Fiche 7,  Justifications,  Espagnol

Fiche 8,  Justifications,  Anglais

Record number: 8, Textual support number: 1 DEF

Mining the coal outward from the shaft pillar and maintaining roadways through the worked-out portion of the wall.  2, fiche 8, Anglais, - advancing%20longwall

Fiche 8,  Justifications,  Français

Record number: 8, Textual support number: 1 OBS

rapport annuel SDCB - 1983  1, fiche 8, Français, - grande%20taille%20chassante

Fiche 8,  Justifications,  Espagnol

Fiche 9,  Justifications,  Anglais

Record number: 9, Textual support number: 1 OBS

[In] base metal mines(...) a large proportion of the ore reserves is found in pillars left between previously mined stopes. These pillars are usually mined using the undercut-and-fill method which is especially suited to unstable ground conditions. Starting at the top of the mining zone the ore is removed in horizontal slices and replaced by backfill to sustain the walls of the adjacent stopes. A wooden mat braced by posts is used to support the backfill so that the ore underneath can be removed.(...) In one mine, the conventional undercut-and-fill technique was modified by suspending the wooden mat on rock bolts anchored to the crown pillar, rather than supporting it on posts.  2, fiche 9, Anglais, - undercut%20and%20fill%20mining

Fiche 9,  Justifications,  Français

Fiche 9,  Justifications,  Espagnol