FR2531485A1 - Etai de bois pour mines - Google Patents

Etai de bois pour mines Download PDF

Info

Publication number
FR2531485A1
FR2531485A1 FR8308631A FR8308631A FR2531485A1 FR 2531485 A1 FR2531485 A1 FR 2531485A1 FR 8308631 A FR8308631 A FR 8308631A FR 8308631 A FR8308631 A FR 8308631A FR 2531485 A1 FR2531485 A1 FR 2531485A1
Authority
FR
France
Prior art keywords
forestay
core
cuts
wood
axis
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.)
Granted
Application number
FR8308631A
Other languages
English (en)
French (fr)
Other versions
FR2531485B3 (enExample
Inventor
Hagen Halbich
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.)
BOTHA RAYMOND
Original Assignee
BOTHA RAYMOND
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 BOTHA RAYMOND filed Critical BOTHA RAYMOND
Publication of FR2531485A1 publication Critical patent/FR2531485A1/fr
Application granted granted Critical
Publication of FR2531485B3 publication Critical patent/FR2531485B3/fr
Granted 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

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)
  • Rod-Shaped Construction Members (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
FR8308631A 1982-08-06 1983-05-25 Etai de bois pour mines Granted FR2531485A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA825699 1982-08-06

Publications (2)

Publication Number Publication Date
FR2531485A1 true FR2531485A1 (fr) 1984-02-10
FR2531485B3 FR2531485B3 (enExample) 1985-05-10

Family

ID=25576203

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8308631A Granted FR2531485A1 (fr) 1982-08-06 1983-05-25 Etai de bois pour mines

Country Status (6)

Country Link
US (1) US4915339A (enExample)
AU (1) AU554264B2 (enExample)
CA (1) CA1190055A (enExample)
DE (1) DE3315243A1 (enExample)
FR (1) FR2531485A1 (enExample)
GB (1) GB2125465B (enExample)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2062879C (en) * 1991-03-13 2005-04-19 Frans Roelof Petrus Pienaar Yieldable load support
AU681729B2 (en) * 1994-01-13 1997-09-04 Hl & H Timber Products (Proprietary) Limited Support prop assemblies
WO2001014692A1 (en) * 1999-08-20 2001-03-01 Jan Hendrik Woller Yielding mine prop
US6910834B2 (en) * 2003-05-27 2005-06-28 Burrell Mining Products, Inc. Mine prop
US8851805B2 (en) 2012-08-30 2014-10-07 Burrell Mining Products, Inc. Telescopic mine roof support
US9903203B2 (en) 2014-08-27 2018-02-27 Burrell Mining Products, Inc. Ventilated mine roof support
US9611738B2 (en) 2014-08-27 2017-04-04 Burrell Mining Products, Inc. Ventilated mine roof support
US10774641B2 (en) * 2016-02-24 2020-09-15 Micon Load support drum with resilient core member
US11053683B2 (en) * 2018-01-24 2021-07-06 Strata Products Worldwide, Llc Apparatus for controlling yield performance of props for roofs, and methods
US10883366B2 (en) 2018-10-24 2021-01-05 Crosscut Enterprises LLC Mine roof support

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE83945C (enExample) *
GB191228784A (en) * 1912-05-20 1913-01-30 Alwin Lantzsch Improvements in Miners' Props.
GB118969A (en) * 1918-01-05 1918-09-19 Mark Fryar Improvements in Pit Props.
GB319091A (en) * 1928-07-09 1929-09-19 Frank Stuart Atkinson Pit and like props and shores
GB814350A (en) * 1956-12-13 1959-06-03 Karl Theodor Jasper Improvements in roof supports for mine workings
DE1238420B (de) * 1964-11-04 1967-04-13 Paurat F Stempel aus Holz fuer den Ausbau von Untertageraeumen, insbesondere fuer den Streckenausbau
DE3066863D1 (en) * 1979-11-02 1984-04-12 Mine Support Syst Pty Ltd Timber prop
US4534531A (en) * 1980-07-22 1985-08-13 Brown Allan H G Elongated prop for supporting a load

Also Published As

Publication number Publication date
US4915339A (en) 1990-04-10
CA1190055A (en) 1985-07-09
GB2125465A (en) 1984-03-07
AU554264B2 (en) 1986-08-14
GB8310725D0 (en) 1983-05-25
AU1403483A (en) 1984-02-09
DE3315243A1 (de) 1984-04-05
FR2531485B3 (enExample) 1985-05-10
GB2125465B (en) 1986-03-05

Similar Documents

Publication Publication Date Title
FR2531485A1 (fr) Etai de bois pour mines
EP2449187B1 (fr) Procede pour la fabrication d'assemblages en materiau fibreux pour la realisation d'une structure de support et assemblage obtenu par ce procede.
FR2633959A1 (fr) Piece d'ancrage, notamment pour beton
FR2487424A1 (fr) Etai de mine
EP0110925B1 (fr) Outil d'enfoncement et de guidage de chevilles de fixation pour piquets
FR2537906A1 (fr) Ratelier a consoles
EP0812008A3 (en) Support jig for thin circular objects
FR2666607A1 (fr) Poutre, notamment en aluminium precontrainte.
CA1081061A (fr) Grille et son procede de mise en oeuvre pour collecter le naissain d'huitres
Bouguenec et al. Deux nouvelles especes d'Enchytraeus (Oligochaeta, Enchytraeidae) et redescription d'E. bigeminus Niel. & Chr. Remarques sur le genre Enchytraeus
EP1573152B1 (en) Replacement of a portion of a pole
EP3490510A1 (fr) Stent intra-osseux
BE507821A (enExample)
BE1005070A6 (fr) Poutrelle en acier resistant au flambement par deversement lateral.
EP0215813A1 (fr) Cheville a fourreau rapporte destinee a la fixation dans le sol de poteaux ou piquets
BE489392A (enExample)
FR2529810A1 (fr) Procede et dispositif pour la fabrication par roulage a froid de crampon metallique anti-derapant pour pneumatiques et crampon obtenu
BE842127A (fr) Perfectionnements aux clous pour pneus
BE703631A (enExample)
CH299963A (fr) Procédé pour l'exécution de pieux de fondation armés à base élargie.
BE341318A (enExample)
BE463958A (enExample)
BE492952A (enExample)
FR2546965A1 (fr) Etancon de mine
FR2527460A1 (fr) Perfectionnement aux skis du type a noyau en matiere synthetique cellulaire

Legal Events

Date Code Title Description
TP Transmission of property