WO2012162720A1 - Récupérateur de charbon - Google Patents

Récupérateur de charbon Download PDF

Info

Publication number
WO2012162720A1
WO2012162720A1 PCT/AU2012/000077 AU2012000077W WO2012162720A1 WO 2012162720 A1 WO2012162720 A1 WO 2012162720A1 AU 2012000077 W AU2012000077 W AU 2012000077W WO 2012162720 A1 WO2012162720 A1 WO 2012162720A1
Authority
WO
WIPO (PCT)
Prior art keywords
coal
conveyor
tray
goaf
canopy
Prior art date
Application number
PCT/AU2012/000077
Other languages
English (en)
Inventor
Steven CHANDLER
Maohu Matthew WANG
Original Assignee
Yancoal Australia Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2011902122A external-priority patent/AU2011902122A0/en
Application filed by Yancoal Australia Ltd filed Critical Yancoal Australia Ltd
Priority to AU2012262642A priority Critical patent/AU2012262642B2/en
Publication of WO2012162720A1 publication Critical patent/WO2012162720A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/0454—Trailing plates; Coal face or goaf side sprags
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/0481—Supports specially adapted for use in combination with the placing of filling-up materials
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F13/00—Transport specially adapted to underground conditions
    • E21F13/06—Transport of mined material at or adjacent to the working face
    • E21F13/066—Scraper chain conveyors

Definitions

  • the present invention relates to a coal saving device particularly but not exclusively for use in a longwall top coal caving (LTCC) system.
  • LTCC longwall top coal caving
  • a longwall top coal caving (LTCC) system as shown in profile in Figure 1, is used in coal mining for the extraction of coal from a long, generally thick coal seam.
  • the system 1 includes a canopy 2 supported by a pontoon 3 on hydraulic legs 4.
  • the canopy 2 is for supporting a roof of the mine above the system 1.
  • a flipper 8 extends from the canopy 2 against a face 9 of the mine.
  • the canopy 2 and flipper 8 provide protection for a front conveyor 10, which transports coal along the face, as it is cut from the face.
  • the system 1 also includes a rear canopy 11 , which is used to cave and protect rear conveyor 15 on a goaf side 12.
  • the goaf 13 is the cavity behind the longwall.
  • the rear canopy 11 also includes a slide door 14 which is extended to stop the flow of coal caving onto the conveyor 15.
  • the rear conveyor 15 is moved in order to allow the overall system 1 to continue walking in a direction from right to left, as viewed, during each cutting cycle.
  • a piston 16 and chain 17 are used to retract the rear conveyor 15 to a position adjacent the pontoon 3, as shown in Figure 2.
  • the present invention seeks to provide a device to help save coal left in the goaf.
  • a coal caving system including a canopy for supporting a mine roof and a conveyor positioned beneath the canopy which also includes a rear canopy with a slider door for selectively caving coal onto the conveyor, the system further including a coal saver device coupled relative to the conveyor for at least partially filling a goaf region adjacent the conveyor, wherein the device includes a tray arranged to be supported directly on a ground surface to accumulate coal which forms into a mound in the goaf region and serves to direct goaf spill onto the conveyor.
  • the device includes an upturned lip along an outer edge of the tray.
  • the device is coupled to a panline supporting the conveyor by connectors which are designed to fail when subjected to an abovethreshold force so as to separate the device from the panline in the event the device becomes caught in the goaf.
  • the tray is substantially flat and at a ground surface level so that the mound is built from substantially the ground surface level up.
  • the system includes a plurality of canopies arranged along a coal face with corresponding rear canopies and an associated device arranged beneath each rear canopy.
  • a coal saving device including a scoop arranged to sit adjacent a rear conveyor of an LTCC system, the scoop serving to accumulate coal which forms into a mound, thereby at least partially filling a goaf region behind the LTCC, to direct further goaf spill onto the rear conveyor.
  • the scoop includes a deck plate with an upturned lip along an outer edge.
  • the scoop includes reinforced attachment plates toward an opposite edge, for connecting the scoop to a rear panline of the LTCC system.
  • a coal saving device including a tray and an upturned lip along an outer edge of the tray, wherein the tray is substantially flat so as to be supported at a ground surface level by way of an underside of the tray resting directly on the ground surface.
  • the lip is angled at between 60° and 70° relative to the tray, to a height of between 100 mm and 300 mm.
  • attachment points are provided along an opposite edge of the tray for carrying connectors adapted to fail in an abovethreshold condition to separate the device from a coal conveyor.
  • the tray has a length in the order of 1650 mm and a width in the order of 700 mm.
  • Figure 1 is an end view of an LTCC system
  • Figure 2 is an end view similar to that of Figure 1, showing a rear conveyor in a retracted position;
  • Figure 3 is an end view similar to Figure 2, showing a coal saving device
  • Figure 4 is a perspective view of the device, showing attached to a panline of the LTCC.
  • Figure 5 is an end view of the device and panline of Figure 4. Detailed Description
  • a coal saving device 20 is also shown connected to a panline 21, which supports the rear conveyor 15.
  • the device 20 is illustrated as comprising a scoop 22 formed by a tray/deck plate 23 with an upturned lip 24 along an outer edge 25.
  • the tray 23 is substantially flat and positioned at a ground surface level whereby an underside of the tray 23 rests directly on top of and is supported by the ground surface over a substantial majority of the underside of the tray 23.
  • the scoop 20 serves to gather coal into a mound 26, to partially fill the goaf 13, up to and preferably above the level of the conveyor 15 so that any excess goaf spill is diverted from the mound 26 and directly on to the rear conveyor 15. Since the tray is at a ground surface level the mound 26 needs to be built from substantially the ground surface up. However, this is readily achieved as the coal in the goaf provides a ready source of material for that purpose.
  • the scoop 22 is shown in more detail as including reinforced plates 27 adjacent an upturned inner edge 28.
  • the plates 27 provide attachment points to connect the device 20 relative to the conveyor 15 via connectors hinge pins 29 and a pair of clevis which are in turn welded to a frame 31 of the panline 21.
  • the length 'L' of the scoop 22 is in the order of 1650 mm and an example width 'W is 700 mm.
  • the angle of the outer edge 25 relative to the deck plate 23 may, for example, be either 60 degrees or 75 degrees to horizontal, as appropriate.
  • the outer edge 25 may project upwardly by a height determined for the required conditions such as, for example, 100 mm, 200 mm or 300 mm.
  • the system 1 generally includes a multitude of canopies arranged along a length of a coal face with a corresponding plurality of rear canopies 11 and devices 20 arranged beneath each rear canopy 1 1. For example, ten or more such scoops are arranged along the length of the panline 21.
  • connection between the panline 21 and device 20, via the connectors/hinge pins 29 and clevis 30, is rated to fail when the inertia of the coal heaped on top of the device 20 exceeds a threshold level for the piston 16.
  • the hinge pins or clevis will shear under application of an abovethreshold force to separate the device 20 from the panline 21, in order that the associated canopy 2 can continue to advance without interrupting or compromising normal operation of the system 1.
  • An advantage of the device 20 is that the tray 23 can be formed of comparatively thin steel as it rests directly on a ground surface and does not need any reinforcement to support the weight load of the coal. As such, the device 20 can be manufactured for a relatively low cost.
  • Another advantage of the device 20 is that it uses coal from the goaf spill itself to form a mound on top of the scoop 22 to at least partially fill the goaf 13 and divert additional goaf spill up toward the panline 21. Accordingly, the device 20 provides the goaf filling function with waste material being coal, which further enhances the cost effectiveness of the device 20.
  • the device 20 is intended to be left in the mine, buried in the goaf spill after a mining operation.
  • the scoop 22 is relatively light and cheap to manufacture, the device 20 represents only a minimal capital investment to leave behind in the mine, compared to the additional revenue generated as a result of re-claimed coal from the goaf.
  • coal saving device 20 has been described by way of non-limiting example only and many modifications and variations may be made thereto without departing from the spirit and scope of the invention described.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)

Abstract

La présente invention concerne un système de foudroyage de charbon qui comprend un auvent de protection pour supporter un plafond de mine et un transporteur positionné sous l'auvent de protection qui comprend également un auvent de protection arrière qui comporte une porte coulissante pour foudroyer sélectivement du charbon sur le transporteur, le système comprenant en outre un dispositif récupérateur de charbon accouplé par rapport au transporteur pour remplir au moins partiellement une région de remblai adjacente au transporteur, le dispositif comprenant un plateau agencé pour être supporté directement sur une surface du sol pour accumuler du charbon qui forme une butte dans la région de remblai et sert à diriger un déversement de remblai sur le transporteur.
PCT/AU2012/000077 2011-05-31 2012-01-31 Récupérateur de charbon WO2012162720A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2012262642A AU2012262642B2 (en) 2011-05-31 2012-01-31 Coal saver

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2011902122A AU2011902122A0 (en) 2011-05-31 Coal saver
AU2011902122 2011-05-31

Publications (1)

Publication Number Publication Date
WO2012162720A1 true WO2012162720A1 (fr) 2012-12-06

Family

ID=47258143

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2012/000077 WO2012162720A1 (fr) 2011-05-31 2012-01-31 Récupérateur de charbon

Country Status (2)

Country Link
AU (1) AU2012262642B2 (fr)
WO (1) WO2012162720A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015169080A1 (fr) * 2014-05-08 2015-11-12 中国矿业大学 Procédé de remblayage à contact de toit d'extraction minière préservant l'eau servant à la régulation de fissure de terrain sus-jacent et d'affaissement du sol
CN108343439A (zh) * 2017-01-21 2018-07-31 董合祥 一种特厚煤层低位抖动高位预裂分层放煤法
CN111252498A (zh) * 2020-03-16 2020-06-09 河南理工大学 一种放顶煤工作面后部刮板运输机煤量自动控制方法
WO2022000811A1 (fr) * 2020-06-30 2022-01-06 中国矿业大学 Procédé intelligent de foudroyage de charbon utilisant des supports hydrauliques sur un front de taille entièrement mécanisé
WO2022088467A1 (fr) * 2020-10-27 2022-05-05 山东科技大学 Banc d'essai de simulation automatisé pour le matériau semblable au foudroyage de charbon de couche supérieure, et procédé de test

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201193527Y (zh) * 2008-05-16 2009-02-11 王占洲 一种煤矿低位综放工作面采空区煤炭低位回收装置
CN201560763U (zh) * 2009-12-12 2010-08-25 山西晋城无烟煤矿业集团有限责任公司 采空区残煤回收装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201193527Y (zh) * 2008-05-16 2009-02-11 王占洲 一种煤矿低位综放工作面采空区煤炭低位回收装置
CN201560763U (zh) * 2009-12-12 2010-08-25 山西晋城无烟煤矿业集团有限责任公司 采空区残煤回收装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Derwent World Patents Index; AN 2009-F38193 *
DATABASE WPI Derwent World Patents Index; AN 2010-L77854 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015169080A1 (fr) * 2014-05-08 2015-11-12 中国矿业大学 Procédé de remblayage à contact de toit d'extraction minière préservant l'eau servant à la régulation de fissure de terrain sus-jacent et d'affaissement du sol
US9689258B2 (en) 2014-05-08 2017-06-27 China University Of Mining And Technology Water-preserved-mining roof-contacted filling method for controlling fissure of overlying strata and surface subsidence
CN108343439A (zh) * 2017-01-21 2018-07-31 董合祥 一种特厚煤层低位抖动高位预裂分层放煤法
CN111252498A (zh) * 2020-03-16 2020-06-09 河南理工大学 一种放顶煤工作面后部刮板运输机煤量自动控制方法
CN111252498B (zh) * 2020-03-16 2021-08-17 河南理工大学 一种放顶煤工作面后部刮板运输机煤量自动控制方法
WO2022000811A1 (fr) * 2020-06-30 2022-01-06 中国矿业大学 Procédé intelligent de foudroyage de charbon utilisant des supports hydrauliques sur un front de taille entièrement mécanisé
WO2022088467A1 (fr) * 2020-10-27 2022-05-05 山东科技大学 Banc d'essai de simulation automatisé pour le matériau semblable au foudroyage de charbon de couche supérieure, et procédé de test
US11519837B2 (en) 2020-10-27 2022-12-06 Shandong University Of Science And Technology Automatic simulation test bench for similar materials of top-coal caving mining and test method thereof

Also Published As

Publication number Publication date
AU2012262642B2 (en) 2016-09-22

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