EP0142280A3 - Elongate mine support - Google Patents

Elongate mine support Download PDF

Info

Publication number
EP0142280A3
EP0142280A3 EP84307040A EP84307040A EP0142280A3 EP 0142280 A3 EP0142280 A3 EP 0142280A3 EP 84307040 A EP84307040 A EP 84307040A EP 84307040 A EP84307040 A EP 84307040A EP 0142280 A3 EP0142280 A3 EP 0142280A3
Authority
EP
European Patent Office
Prior art keywords
support
sleeve
weaknesses
mine support
collapse
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.)
Withdrawn
Application number
EP84307040A
Other languages
German (de)
French (fr)
Other versions
EP0142280A2 (en
Inventor
Dirk Cornelius Stephanus Venter
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.)
BESTOBELL SOUTH AFRICA Ltd
Original Assignee
BESTOBELL SOUTH AFRICA 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
Application filed by BESTOBELL SOUTH AFRICA Ltd filed Critical BESTOBELL SOUTH AFRICA Ltd
Publication of EP0142280A2 publication Critical patent/EP0142280A2/en
Publication of EP0142280A3 publication Critical patent/EP0142280A3/en
Withdrawn legal-status Critical Current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
    • E21D15/02—Non-telescopic props
    • 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
    • E21D15/14—Telescopic 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)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Clamps And Clips (AREA)

Abstract

An elongate mine support comprising a timber pole (2) with a metal sleeve (3) reinforcement therearound has cir­ cumferential weaknesses (4) in the sleeve for assisting con­ trolled collapse of the sleeve when the support is under axial load. The circumferential weaknesses may be formed bet­ ween the adjacent edges of separate sleeves (29)­ . The separate sleeves (35) may each be belled at its lower end so as to slip each one over the next lower sleeve during a controlled collapse of the support. The weak­ nesses (8) may be spirally formed and so as to be capable of being torn off to assist in shorten­ ing the support. The weaknesses (44) or (52) may be formed as corrugations.
EP84307040A 1983-10-14 1984-10-15 Elongate mine support Withdrawn EP0142280A3 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
ZA837657 1983-10-14
ZA837657 1983-10-14
ZA838633 1983-11-18
ZA838633 1983-11-18
ZA8443 1984-01-04
ZA840043 1984-01-04
ZA840824 1984-02-03
ZA84824 1984-02-03

Publications (2)

Publication Number Publication Date
EP0142280A2 EP0142280A2 (en) 1985-05-22
EP0142280A3 true EP0142280A3 (en) 1986-05-21

Family

ID=27506087

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84307040A Withdrawn EP0142280A3 (en) 1983-10-14 1984-10-15 Elongate mine support

Country Status (5)

Country Link
EP (1) EP0142280A3 (en)
AU (1) AU582127B2 (en)
CA (1) CA1231843A (en)
NZ (1) NZ209882A (en)
ZW (1) ZW16784A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8801338B2 (en) * 2011-11-28 2014-08-12 Micon Nested mine roof supports
CN103603682B (en) * 2013-11-14 2015-11-25 江西理工大学 A kind of top plate supporting method being applicable to slice drift cemented filling mining

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1642603A (en) * 1926-06-03 1927-09-13 Martin J Conway Reenforced mine prop
DE1088905B (en) * 1958-12-02 1960-09-15 Rheinstahl Gmbh Wanheim Process for the production of conical cylindrical inner punches
EP0028496A1 (en) * 1979-11-02 1981-05-13 Mine Support Systems (Proprietary) Limited Timber prop
GB2077808A (en) * 1980-05-09 1981-12-23 Longwall Mining Equipment Prop Improvements in props
GB2080364A (en) * 1980-07-22 1982-02-03 Hunt Leuchars & Hepburn Ltd Mine support prop
GB2081340A (en) * 1980-07-22 1982-02-17 Brown Allan Henry George Deformable mine prop
GB2096203A (en) * 1981-04-08 1982-10-13 Longwall Mining Equipment Prop Mine support

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA838848B (en) * 1982-08-26 1984-08-29
AU560858B2 (en) * 1983-06-24 1987-04-16 Bestobell South Africa (Proprietary) Limited Yieldable timber roof prop

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1642603A (en) * 1926-06-03 1927-09-13 Martin J Conway Reenforced mine prop
DE1088905B (en) * 1958-12-02 1960-09-15 Rheinstahl Gmbh Wanheim Process for the production of conical cylindrical inner punches
EP0028496A1 (en) * 1979-11-02 1981-05-13 Mine Support Systems (Proprietary) Limited Timber prop
GB2077808A (en) * 1980-05-09 1981-12-23 Longwall Mining Equipment Prop Improvements in props
GB2080364A (en) * 1980-07-22 1982-02-03 Hunt Leuchars & Hepburn Ltd Mine support prop
GB2081340A (en) * 1980-07-22 1982-02-17 Brown Allan Henry George Deformable mine prop
GB2096203A (en) * 1981-04-08 1982-10-13 Longwall Mining Equipment Prop Mine support

Also Published As

Publication number Publication date
ZW16784A1 (en) 1985-02-27
NZ209882A (en) 1986-03-14
EP0142280A2 (en) 1985-05-22
AU582127B2 (en) 1989-03-16
AU3425384A (en) 1985-04-18
CA1231843A (en) 1988-01-26

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Legal Events

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PUAL Search report despatched

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18D Application deemed to be withdrawn

Effective date: 19870122

RIN1 Information on inventor provided before grant (corrected)

Inventor name: VENTER, DIRK CORNELIUS STEPHANUS