GB943658A - A new or improved colliery arch - Google Patents

A new or improved colliery arch

Info

Publication number
GB943658A
GB943658A GB1577761A GB1577761A GB943658A GB 943658 A GB943658 A GB 943658A GB 1577761 A GB1577761 A GB 1577761A GB 1577761 A GB1577761 A GB 1577761A GB 943658 A GB943658 A GB 943658A
Authority
GB
United Kingdom
Prior art keywords
arch
new
yielding
mine arch
colliery
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
GB1577761A
Inventor
Leslie Maxwell-Holroyd
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.)
BRD Co Ltd
Original Assignee
BRD Co 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 BRD Co Ltd filed Critical BRD Co Ltd
Priority to GB1577761A priority Critical patent/GB943658A/en
Publication of GB943658A publication Critical patent/GB943658A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14—Lining predominantly with metal
    • E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
    • E21D11/186—Pre-stressing or dismantling devices therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

943,658. Yielding mine arch supports. B.R.D. CO. Ltd. May 2, 1962 [May 2, 1961], No. 15777/61. Heading E1E. Each yielding leg of a mine arch support consists of an inverted hydraulic jack 12 which is secured to the mine arch segment 19 by a pivoted connection 15, 16, 17 and a clamp 20, 21, each jack being set by a pump 23 and incorporating pressure relief and relief valve means.
GB1577761A 1961-05-02 1961-05-02 A new or improved colliery arch Expired GB943658A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1577761A GB943658A (en) 1961-05-02 1961-05-02 A new or improved colliery arch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1577761A GB943658A (en) 1961-05-02 1961-05-02 A new or improved colliery arch

Publications (1)

Publication Number Publication Date
GB943658A true GB943658A (en) 1963-12-04

Family

ID=10065281

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1577761A Expired GB943658A (en) 1961-05-02 1961-05-02 A new or improved colliery arch

Country Status (1)

Country Link
GB (1) GB943658A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3601996A (en) * 1969-12-30 1971-08-31 Building Equipments Corp Sa Retractable tunnel-type shuttering
US4010617A (en) * 1975-05-19 1977-03-08 Armco Steel Corporation Composite arch structure
FR2486999A1 (en) * 1980-07-16 1982-01-22 Kloeckner Werke Ag DEFORMABLE SUPPORT FOR MINE OR SIMILAR GALLERIES

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3601996A (en) * 1969-12-30 1971-08-31 Building Equipments Corp Sa Retractable tunnel-type shuttering
US4010617A (en) * 1975-05-19 1977-03-08 Armco Steel Corporation Composite arch structure
FR2486999A1 (en) * 1980-07-16 1982-01-22 Kloeckner Werke Ag DEFORMABLE SUPPORT FOR MINE OR SIMILAR GALLERIES

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