GB884908A - Improved section iron for arched frames in mine galleries, tunnels or the like - Google Patents

Improved section iron for arched frames in mine galleries, tunnels or the like

Info

Publication number
GB884908A
GB884908A GB32934/58A GB3293458A GB884908A GB 884908 A GB884908 A GB 884908A GB 32934/58 A GB32934/58 A GB 32934/58A GB 3293458 A GB3293458 A GB 3293458A GB 884908 A GB884908 A GB 884908A
Authority
GB
United Kingdom
Prior art keywords
tunnels
section iron
arched frames
improved section
mine galleries
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
GB32934/58A
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 GB884908A publication Critical patent/GB884908A/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
    • E21D11/20—Special cross- sections, e.g. corrugated

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)
  • Lining And Supports For Tunnels (AREA)

Abstract

884,908. Mine roof supports. JASPER, K. T. Oct. 15, 1958 [Nov. 23, 1957], No. 32934/58. Class 20(2) A mine roof arch comprises channel sections 6, 7, of which the inner surfaces 1 are wholly parabolic and the outer surfaces 2 are parabolic except for the lower parts 5 which are arcuate so as to provide a space between the sections at their lower parts 4. Specification 747,433 is referred to.
GB32934/58A 1957-11-23 1958-10-15 Improved section iron for arched frames in mine galleries, tunnels or the like Expired GB884908A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE884908X 1957-11-23

Publications (1)

Publication Number Publication Date
GB884908A true GB884908A (en) 1961-12-20

Family

ID=6832645

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32934/58A Expired GB884908A (en) 1957-11-23 1958-10-15 Improved section iron for arched frames in mine galleries, tunnels or the like

Country Status (1)

Country Link
GB (1) GB884908A (en)

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