Processing

Please wait...

PATENTSCOPE will be unavailable a few hours for maintenance reason on Saturday 31.10.2020 at 7:00 AM CET
Settings

Settings

Goto Application

1. WO1996041932 - METHOD OF ROOF CONTROL IN AN UNDERGROUND MINE

Publication Number WO/1996/041932
Publication Date 27.12.1996
International Application No. PCT/US1996/009803
International Filing Date 07.06.1996
Chapter 2 Demand Filed 08.01.1997
IPC
E21C 39/00 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
CMINING OR QUARRYING
39Devices for testing in situ the hardness or other properties of minerals, e.g. for giving information as to the selection of suitable mining tools
E21D 9/14 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
9Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
14Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
E21D 20/00 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
20Setting anchoring-bolts
E21F 17/18 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS
17Methods or devices for use in mines or tunnels, not covered elsewhere
18Special adaptations of signalling or alarm devices
CPC
E21C 39/00
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
CMINING OR QUARRYING
39Devices for testing in situ the hardness or other properties of minerals, e.g. for giving information as to the selection of suitable mining tools
E21D 20/00
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
20Setting anchoring-bolts
E21D 9/14
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
9Tunnels or galleries, with or without linings; Methods or apparatus for making thereof
14Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
E21F 17/185
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
17Methods or devices for use in mines or tunnels, not covered elsewhere
18Special adaptations of signalling or alarm devices
185Rock-pressure control devices with or without alarm devices; Alarm devices in case of roof subsidence
Applicants
  • JENNMAR CORPORATION [US]/[US] (AllExceptUS)
  • STANKUS, John, C. [US]/[US] (UsOnly)
  • GUO, Song [CN]/[US] (UsOnly)
Inventors
  • STANKUS, John, C.
  • GUO, Song
Agents
  • ORKIN, Russell, D.
Priority Data
08/659,03703.06.1996US
60/000,00208.06.1995US
60/008,97621.12.1995US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD OF ROOF CONTROL IN AN UNDERGROUND MINE
(FR) PROCEDE DE VERIFICATION DU TOIT DANS UNE MINE SOUTERRAINE
Abstract
(EN)
Stresses in an underground mine are determined by analyzing mechanical properties of mine site stratum (Figure 1, numerals 2, 4, 6 and 8) including orthotropic properties of at least one of Young's modules and Poisson's ratio. The mechanical properties of the mine site are combined with a physical layout of the mine that includes one or more of an entry and a pillar arrangement formed in a stratum of material being mined (Figure 1, numeral 10). The physical layout may also include an array of roof bolts in a roof of the mine. A finite element analysis (FEA) (Figure 2) is performed on the combined mechanical properties and physical layout to obtain a stress analysis of the mine site. The stress analysis is analyzed to determine if the layout of the mine is sufficient to provide a desired degree of support while maximizing the removal of material being mined. If the desired degree of support is not provided, the physical layout and/or the array of roof bolts is adjusted and subsequent FEA performed until the desired degree of support is provided.
(FR)
On évalue les contraintes mécaniques dans une mine souterraine en analysant les caractéristiques mécaniques d'une veine de site minier (Fig. 1, n° 2, 4, 6, et 8), y compris les caractéristiques orthotropes d'au moins un des modules de Young et du coefficient de Poisson. On combine les caractéristiques mécaniques du site minier à un tracé physique de la mine qui comporte au moins un agencement constitué d'une galerie et d'un pilier formé dans une veine de la matière à exploiter (Fig. 1, n°10). Le tracé physique peut également comporter un ensemble de boulons d'ancrage dans un toit de la mine. On applique la méthode des éléments finis (FEA) (Fig. 2) à la combinaison des caractéristiques mécaniques et du tracé physique pour parvenir à une évaluation des contraintes du site minier. On analyse cette évaluation des contraintes pour décider si le tracé de la mine permet d'assurer un niveau souhaité de soutien tout en permettant l'optimisation de l'enlèvement de la matière à exploiter. Si le niveau de soutien souhaité n'est pas assuré, on ajuste le tracé physique et/ou l'ensemble de boulons d'ancrage et l'on applique ensuite la méthode des éléments finis jusqu'à ce que l'on parvienne au niveau de soutien souhaité.
Also published as
Latest bibliographic data on file with the International Bureau