GB1227317A - - Google Patents

Info

Publication number
GB1227317A
GB1227317A GB1227317DA GB1227317A GB 1227317 A GB1227317 A GB 1227317A GB 1227317D A GB1227317D A GB 1227317DA GB 1227317 A GB1227317 A GB 1227317A
Authority
GB
United Kingdom
Prior art keywords
interconnected
arches
piston
mine
advancing
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.)
Expired
Application number
Other languages
English (en)
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 filed Critical
Publication of GB1227317A publication Critical patent/GB1227317A/en
Expired legal-status Critical Current

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
    • E21D23/0086—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor in galleries
    • E21D23/0095—Temporary supports at the driving front

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)
  • Tents Or Canopies (AREA)
GB1227317D 1967-06-07 1967-06-07 Expired GB1227317A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2626967 1967-06-07

Publications (1)

Publication Number Publication Date
GB1227317A true GB1227317A (de) 1971-04-07

Family

ID=10240996

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1227317D Expired GB1227317A (de) 1967-06-07 1967-06-07

Country Status (1)

Country Link
GB (1) GB1227317A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091628A (en) * 1976-09-27 1978-05-30 Jay Hilary Kelley Prestressed elastic arched mine roof support
FR2415720A1 (fr) * 1978-01-27 1979-08-24 Stephanois Constr Meca Soutenement de tracage a portance permanente
US4173421A (en) * 1976-10-15 1979-11-06 Gewerkschaft Eisenhutte Westfalia Shield apparatus for use in tunnelling or mining
US5444948A (en) * 1994-02-09 1995-08-29 Trapp; William B. Adjustable arch support
CN103711509A (zh) * 2014-01-10 2014-04-09 李明 自移式拱形掩护支架、铺网架棚一体机

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091628A (en) * 1976-09-27 1978-05-30 Jay Hilary Kelley Prestressed elastic arched mine roof support
US4173421A (en) * 1976-10-15 1979-11-06 Gewerkschaft Eisenhutte Westfalia Shield apparatus for use in tunnelling or mining
FR2415720A1 (fr) * 1978-01-27 1979-08-24 Stephanois Constr Meca Soutenement de tracage a portance permanente
US5444948A (en) * 1994-02-09 1995-08-29 Trapp; William B. Adjustable arch support
CN103711509A (zh) * 2014-01-10 2014-04-09 李明 自移式拱形掩护支架、铺网架棚一体机

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee