GB952506A - Improvements relating to mine roof supports - Google Patents

Improvements relating to mine roof supports

Info

Publication number
GB952506A
GB952506A GB2403361A GB2403361A GB952506A GB 952506 A GB952506 A GB 952506A GB 2403361 A GB2403361 A GB 2403361A GB 2403361 A GB2403361 A GB 2403361A GB 952506 A GB952506 A GB 952506A
Authority
GB
United Kingdom
Prior art keywords
barrel
roof supports
mine roof
shaped
chocks
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
GB2403361A
Inventor
Geoffrey Edmund Salt
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.)
GEORGE FLETCHER AND Co LT
Original Assignee
GEORGE FLETCHER AND Co LT
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 GEORGE FLETCHER AND Co LT filed Critical GEORGE FLETCHER AND Co LT
Priority to GB2403361A priority Critical patent/GB952506A/en
Publication of GB952506A publication Critical patent/GB952506A/en
Expired 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
    • E21D15/50—Component parts or details of props
    • E21D15/52—Extensible units located above or below standard props
    • E21D15/526—Extensible units located above or below standard props for step-by-step extension of the prop
    • 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
    • E21D15/50—Component parts or details of props
    • E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
    • E21D15/517—Extension elements

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)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)

Abstract

952,506. Mine chocks. GEORGE FLETCHER & CO. Ltd. Sept. 24, 1962 [July 4, 1961], No. 24033/61. Heading E1E. A distance piece for use with hydraulic chocks in mine roof supports consists of a top plate 10 and a bottom plate 11 connected together at any required spacing by a central barrel formed by one or more metal pressings such as 12, 13, 14 shaped so that the barrel in horizontal cross-section is approximately starshaped. The barrel is formed out of two or more identical sections secured together along vertical meeting edges, e.g. to form a Vee-groove along their mating edges, welding metal 15 being in the grooves. The barrel may be shaped as a six- or an eight-pointed star and the sections are welded at 16, 17 to the top and bottom plates, respectively.
GB2403361A 1961-07-04 1961-07-04 Improvements relating to mine roof supports Expired GB952506A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2403361A GB952506A (en) 1961-07-04 1961-07-04 Improvements relating to mine roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2403361A GB952506A (en) 1961-07-04 1961-07-04 Improvements relating to mine roof supports

Publications (1)

Publication Number Publication Date
GB952506A true GB952506A (en) 1964-03-18

Family

ID=10205319

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2403361A Expired GB952506A (en) 1961-07-04 1961-07-04 Improvements relating to mine roof supports

Country Status (1)

Country Link
GB (1) GB952506A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136849A (en) * 1983-03-23 1984-09-26 Hsb Hydraulik Schlauchtechnik Method and equipment for controlling the floor of a gallery
CN104043950A (en) * 2014-06-23 2014-09-17 河南伟彤科技股份有限公司 Machining process of hydraulic support lifting jack cylinder
CN106837396A (en) * 2016-12-30 2017-06-13 中国矿业大学 A kind of modular support suitable for lame advanced supporting

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136849A (en) * 1983-03-23 1984-09-26 Hsb Hydraulik Schlauchtechnik Method and equipment for controlling the floor of a gallery
CN104043950A (en) * 2014-06-23 2014-09-17 河南伟彤科技股份有限公司 Machining process of hydraulic support lifting jack cylinder
CN104043950B (en) * 2014-06-23 2017-01-04 河南伟彤科技股份有限公司 A kind of processing technique of Jack of Hydraulic Powered Supports cylinder barrel
CN106837396A (en) * 2016-12-30 2017-06-13 中国矿业大学 A kind of modular support suitable for lame advanced supporting
CN106837396B (en) * 2016-12-30 2019-09-10 中国矿业大学 A kind of modular support suitable for lame advanced supporting

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