AU9043298A - A pre-stressing device for a mine prop - Google Patents

A pre-stressing device for a mine prop

Info

Publication number
AU9043298A
AU9043298A AU90432/98A AU9043298A AU9043298A AU 9043298 A AU9043298 A AU 9043298A AU 90432/98 A AU90432/98 A AU 90432/98A AU 9043298 A AU9043298 A AU 9043298A AU 9043298 A AU9043298 A AU 9043298A
Authority
AU
Australia
Prior art keywords
stressing device
mine prop
prop
mine
stressing
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
AU90432/98A
Inventor
Trevor Charles Frost
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of AU9043298A publication Critical patent/AU9043298A/en
Abandoned legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50—Component parts or details of props
    • E21D15/52—Extensible units located above or below standard props

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Wind Motors (AREA)
AU90432/98A 1997-08-12 1998-08-13 A pre-stressing device for a mine prop Abandoned AU9043298A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ZA977194 1997-08-12
ZA97/7194 1997-08-12
PCT/ZW1998/000013 WO1999007980A1 (en) 1997-08-12 1998-08-13 A pre-stressing device for a mine prop

Publications (1)

Publication Number Publication Date
AU9043298A true AU9043298A (en) 1999-03-01

Family

ID=25586532

Family Applications (1)

Application Number Title Priority Date Filing Date
AU90432/98A Abandoned AU9043298A (en) 1997-08-12 1998-08-13 A pre-stressing device for a mine prop

Country Status (2)

Country Link
AU (1) AU9043298A (en)
WO (1) WO1999007980A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU737765B2 (en) * 1997-08-29 2001-08-30 Gomec Developments Close Corporation Elongate support preload device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255071A (en) * 1979-08-27 1981-03-10 Bochumer Eisenhutte Heintzmann Gmbh & Co. Supporting of excavation roofs
HU183739B (en) * 1981-12-15 1984-05-28 Tatabanyai Szenbanyak Hydraulic cylinder of combination operation particularly prop
US5215411A (en) * 1991-03-22 1993-06-01 Seegmiller Ben L Yieldable mine post system
AU681729B2 (en) * 1994-01-13 1997-09-04 Hl & H Timber Products (Proprietary) Limited Support prop assemblies
ZA9510653B (en) * 1994-12-27 1996-07-09 H L & H Timber Prod Prestress grout bag and filler valve therefor
US5669739A (en) * 1995-07-05 1997-09-23 Hl & H Timber Products (Proprietary) Limited Prestressing of mine props

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU737765B2 (en) * 1997-08-29 2001-08-30 Gomec Developments Close Corporation Elongate support preload device

Also Published As

Publication number Publication date
WO1999007980A1 (en) 1999-02-18

Similar Documents

Publication Publication Date Title
ZA974419B (en) Mine props
AU2789895A (en) Mine prop
AU9043298A (en) A pre-stressing device for a mine prop
AU686979B3 (en) Device for sealing a mine shaft
GB2330596B (en) Mine prop
ZA9810296B (en) A pre-stressing device for a mine prop.
GB2330846B (en) A gutter
PL105668U1 (en) Safetying device for a mining prop
ZA991094B (en) Prestressing device for a mine prop.
GB2304752B (en) A prop
ZA987549B (en) A mine support
AU9768998A (en) A device at a stake
ZA984887B (en) Mine support prop
ZA986265B (en) A mine prop.
GB2324579B (en) A liner for a well
AUPO619097A0 (en) Device for sealing a mine shaft
ZA981824B (en) A prop
AU3870797A (en) A device for a derrick
AU6797998A (en) A pump device
AU7886498A (en) A mine roof support plate
ZA985591B (en) Mine prop
ZA984889B (en) Mine prop
ZA9810868B (en) Yielding mine support prop
ZA9710397B (en) Mine prop prestressing device.
AUPO724297A0 (en) Mining roof supports

Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase