GB2022756A - Mine Bolt and Method of Installing a Mine Bolt in Rock Formation - Google Patents

Mine Bolt and Method of Installing a Mine Bolt in Rock Formation

Info

Publication number
GB2022756A
GB2022756A GB7919458A GB7919458A GB2022756A GB 2022756 A GB2022756 A GB 2022756A GB 7919458 A GB7919458 A GB 7919458A GB 7919458 A GB7919458 A GB 7919458A GB 2022756 A GB2022756 A GB 2022756A
Authority
GB
United Kingdom
Prior art keywords
bolt
rod
shell
thrust
cone
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.)
Withdrawn
Application number
GB7919458A
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 GB2022756A publication Critical patent/GB2022756A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/008—Anchoring or tensioning means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Dowels (AREA)

Abstract

A mine bolt has an anchor device 25 including an expansible shell 29 surrounding a cone member 27 in threaded engagement with a bolt rod 23. Axial movement of the shell 29, as the cone 27 moves into the shell 29, is blocked by a thrust member 28 having a limited resistance to thrust. On exceeding the thrust limit, the thrust member 28 strips out of its threaded engagement with the rod 23, and slides over the unthreaded portion of the rod 23 on continued rotation of the bolt rod 23. During this continued rotation, the cone 27 and shell 29 remain relatively fixed, with the rod 23 advancing axially in its threaded engagement to tighten the head 24 of the bolt against a surface plate 31. The method provides for setting an anchor bolt to a limit pressure controlled by this stripping action. <IMAGE>
GB7919458A 1978-06-05 1979-06-04 Mine Bolt and Method of Installing a Mine Bolt in Rock Formation Withdrawn GB2022756A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US91294878A 1978-06-05 1978-06-05

Publications (1)

Publication Number Publication Date
GB2022756A true GB2022756A (en) 1979-12-19

Family

ID=25432737

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7919458A Withdrawn GB2022756A (en) 1978-06-05 1979-06-04 Mine Bolt and Method of Installing a Mine Bolt in Rock Formation

Country Status (3)

Country Link
JP (1) JPS54159553A (en)
AU (1) AU4772779A (en)
GB (1) GB2022756A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4602500A (en) * 1985-08-30 1986-07-29 Haskel, Inc. Apparatus for leakage testing of tubes and joints
DE3615163A1 (en) * 1985-05-06 1986-11-27 Vorspann-Technik GmbH, Salzburg Anchor element and method of dismounting one or more tendons of an anchor
GB2179114A (en) * 1985-08-08 1987-02-25 Lionel William Jenkins Attachment for tubular body
US4784530A (en) * 1986-09-16 1988-11-15 Price Jr Stanley J Roof bolt apparatus
US5133618A (en) * 1991-01-11 1992-07-28 Ici Ceramics, Inc. Rod end joint
US6048149A (en) * 1999-02-05 2000-04-11 Garcia; Enrique Fastening anchorage assembly
WO2012171155A1 (en) * 2011-06-13 2012-12-20 中国矿业大学(北京) Constant-resistance and large deformation anchor cable and constant-resistance device
CN106246675A (en) * 2015-06-10 2016-12-21 上海振纯新型建材有限公司 A kind of expansion bolt with stability

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010058474A1 (en) * 2008-11-20 2010-05-27 光洋器材株式会社 Expansion fastener
RU2655248C2 (en) 2013-08-08 2018-05-24 Хова Корпорейшн Anchor bolt
WO2015019630A1 (en) * 2013-08-08 2015-02-12 株式会社豊和 Anchor bolt

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3615163A1 (en) * 1985-05-06 1986-11-27 Vorspann-Technik GmbH, Salzburg Anchor element and method of dismounting one or more tendons of an anchor
AT385088B (en) * 1985-05-06 1988-02-10 Vorspann Technik Gmbh ANCHOR ELEMENT, SUITABLE FOR REMOVING ONE OR SEVERAL TENSION LINKS
GB2179114A (en) * 1985-08-08 1987-02-25 Lionel William Jenkins Attachment for tubular body
US4602500A (en) * 1985-08-30 1986-07-29 Haskel, Inc. Apparatus for leakage testing of tubes and joints
US4784530A (en) * 1986-09-16 1988-11-15 Price Jr Stanley J Roof bolt apparatus
US5133618A (en) * 1991-01-11 1992-07-28 Ici Ceramics, Inc. Rod end joint
US6048149A (en) * 1999-02-05 2000-04-11 Garcia; Enrique Fastening anchorage assembly
WO2012171155A1 (en) * 2011-06-13 2012-12-20 中国矿业大学(北京) Constant-resistance and large deformation anchor cable and constant-resistance device
US9797248B2 (en) 2011-06-13 2017-10-24 China University Of Mining & Technology (Beijing) Constant-resistance and large deformation anchor cable and constant-resistance device
CN106246675A (en) * 2015-06-10 2016-12-21 上海振纯新型建材有限公司 A kind of expansion bolt with stability
CN106246675B (en) * 2015-06-10 2023-10-27 上海振纯新型建材有限公司 Expansion bolt with stability

Also Published As

Publication number Publication date
AU4772779A (en) 1979-12-13
JPS54159553A (en) 1979-12-17

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)