GB1412984A - Mine roof supports - Google Patents

Mine roof supports

Info

Publication number
GB1412984A
GB1412984A GB4964972A GB4964972A GB1412984A GB 1412984 A GB1412984 A GB 1412984A GB 4964972 A GB4964972 A GB 4964972A GB 4964972 A GB4964972 A GB 4964972A GB 1412984 A GB1412984 A GB 1412984A
Authority
GB
United Kingdom
Prior art keywords
section
joint member
joint
oct
members
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
GB4964972A
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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents 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 Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Priority to GB4964972A priority Critical patent/GB1412984A/en
Publication of GB1412984A publication Critical patent/GB1412984A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D11/24—Knuckle joints or links between arch members

Abstract

1412984 Mine arch supports COAL INDUSTRY (PATENTS) Ltd 19 Oct 1973 [27 Oct 1972] 49649/72 Heading E1E In an articulated mine roof support comprising first and second joint members adapted to be connected at one end as by welding to the associated roof section 3 or leg section 4, one joint member 5 has a recess 12 to accommodate a projection 21 on the other joint member and at least one of the abutment faces thereof is curved. The joint member 5 has an extension 11 to potition the roof section 3. In a modification, Figs. 5 and 6 of the Provisional Specification (not shown) the joint members are bifurcated to seat on the web of the associated section and are then welded and bolted thereto. Two such arch members as above may be interconnected to-gether by tubular struts and wire mesh.
GB4964972A 1972-10-27 1972-10-27 Mine roof supports Expired GB1412984A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4964972A GB1412984A (en) 1972-10-27 1972-10-27 Mine roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4964972A GB1412984A (en) 1972-10-27 1972-10-27 Mine roof supports

Publications (1)

Publication Number Publication Date
GB1412984A true GB1412984A (en) 1975-11-05

Family

ID=10453070

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4964972A Expired GB1412984A (en) 1972-10-27 1972-10-27 Mine roof supports

Country Status (1)

Country Link
GB (1) GB1412984A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163195A (en) * 1984-05-25 1986-02-19 Caledonian Mining Co Ltd A tunnel support joint
CN105545331A (en) * 2016-01-29 2016-05-04 中国矿业大学 Large-section coal road driving face rib spalling preventing stop lever and supporting method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163195A (en) * 1984-05-25 1986-02-19 Caledonian Mining Co Ltd A tunnel support joint
CN105545331A (en) * 2016-01-29 2016-05-04 中国矿业大学 Large-section coal road driving face rib spalling preventing stop lever and supporting method

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Legal Events

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