GB777349A - Improvements in yielding mine gallery roof supports - Google Patents

Improvements in yielding mine gallery roof supports

Info

Publication number
GB777349A
GB777349A GB17259/54A GB1725954A GB777349A GB 777349 A GB777349 A GB 777349A GB 17259/54 A GB17259/54 A GB 17259/54A GB 1725954 A GB1725954 A GB 1725954A GB 777349 A GB777349 A GB 777349A
Authority
GB
United Kingdom
Prior art keywords
roof supports
mine gallery
gallery roof
yielding mine
yielding
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
GB17259/54A
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 GB777349A publication Critical patent/GB777349A/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
    • E21D11/22—Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure

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)
  • Tents Or Canopies (AREA)

Abstract

777,349. Mine roof supports. GERLACH, H. June 11, 1954 [Nov. 18, 1953]. Class 20(2) A corner end 1 of an arch girder supporting a mine roof is clamped between the parts 2, 3 of a foot which engages the web of the girder by the end faces of ribs 6 the areas of which are so small that the clamping pressure causes deformation of the engaging plants.
GB17259/54A 1953-11-18 1954-06-11 Improvements in yielding mine gallery roof supports Expired GB777349A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE777349X 1953-11-18

Publications (1)

Publication Number Publication Date
GB777349A true GB777349A (en) 1957-06-19

Family

ID=6686723

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17259/54A Expired GB777349A (en) 1953-11-18 1954-06-11 Improvements in yielding mine gallery roof supports

Country Status (1)

Country Link
GB (1) GB777349A (en)

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