SG11201805022UA - Rock bolt - Google Patents

Rock bolt

Info

Publication number
SG11201805022UA
SG11201805022UA SG11201805022UA SG11201805022UA SG11201805022UA SG 11201805022U A SG11201805022U A SG 11201805022UA SG 11201805022U A SG11201805022U A SG 11201805022UA SG 11201805022U A SG11201805022U A SG 11201805022UA SG 11201805022U A SG11201805022U A SG 11201805022UA
Authority
SG
Singapore
Prior art keywords
rod body
movable side
side rod
hole
movable
Prior art date
Application number
SG11201805022UA
Inventor
Yu Koizumi
Yasuhiro Yokota
Keita Iwano
Yuko Okada
Kensuke Date
Takuji Yamamoto
Kazuhiko Masumoto
Takaaki Inuzuka
Original Assignee
Kajima Corp
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 Kajima Corp filed Critical Kajima Corp
Publication of SG11201805022UA publication Critical patent/SG11201805022UA/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00—Setting anchoring-bolts

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)
  • Piles And Underground Anchors (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

FP0863-00 47 A rock bolt 1 which is embedded in a hole 103 provided in ground 101 includes: a movable side rod body 3 which includes movable side extension portions 16, 17, and 18 disposed inside the hole 103 to be elastically deformable; a fixed side rod body 2 which is 5 provided in parallel to the movable side rod body 3 inside the hole 103; a cylinder casing 22 which movably connects the movable side rod body 3 to the fixed side rod body 2; a compression spring 24 which generates a force in a direction A2 opposite to a movement direction A1 when the movable side rod body 3 moves with respect to the fixed side 10 rod body 2; and a slide regulation mechanism 23 which defines a movable range of the movable side rod body 3. The rigidities of the movable side extension portions 16, 17, and 18 of the movable side rod body 3 are larger than the stiffness of the compression spring 24. 15
SG11201805022UA 2016-01-06 2016-12-19 Rock bolt SG11201805022UA (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016001009 2016-01-06
PCT/JP2016/087760 WO2017119271A1 (en) 2016-01-06 2016-12-19 Rock bolt

Publications (1)

Publication Number Publication Date
SG11201805022UA true SG11201805022UA (en) 2018-07-30

Family

ID=59273583

Family Applications (1)

Application Number Title Priority Date Filing Date
SG11201805022UA SG11201805022UA (en) 2016-01-06 2016-12-19 Rock bolt

Country Status (3)

Country Link
JP (2) JP6181343B1 (en)
SG (1) SG11201805022UA (en)
WO (2) WO2017119145A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7117860B2 (en) * 2018-02-14 2022-08-15 鹿島建設株式会社 Rock bolts and support structures
CN109162743B (en) * 2018-09-26 2020-03-13 西南交通大学 Friction-shearing combined quasi-constant-resistance large-deformation anchor cable
CN110925003B (en) * 2019-12-10 2021-02-23 华北水利水电大学 Extensible anchor rod with multistage stress and displacement control and multifunctional intelligent monitoring device
JP6739831B1 (en) 2020-02-20 2020-08-12 黒沢建設株式会社 Crimping grip with a threaded rod and a tension member including the same

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4295760A (en) * 1978-04-21 1981-10-20 Warner Clifford C Rock bolt anchor
JPH0449276Y2 (en) * 1987-05-21 1992-11-19
US5882148A (en) * 1997-02-07 1999-03-16 Dm Technologies Ltd. Apparatus for yielding support of rock
JP3899925B2 (en) * 2001-12-18 2007-03-28 株式会社大林組 Disc spring ground anchor
EP1819903A4 (en) * 2004-09-20 2010-12-29 Atlas Copco Mai Gmbh An elongate element tensioning member
JP2007177485A (en) * 2005-12-27 2007-07-12 Nozaki Tsutomu Anchor fixing tool and anchor installing method
DE102006053141B3 (en) * 2006-11-10 2008-06-19 Atlas Copco Mai Gmbh Improved slip anchor
AU2009337040A1 (en) * 2009-01-07 2011-07-14 Mansour Mining Technologies Inc. Yieldable cone bolt and method of manufacturing same

Also Published As

Publication number Publication date
JP6181343B1 (en) 2017-08-16
WO2017119145A1 (en) 2017-07-13
JP2017186902A (en) 2017-10-12
WO2017119271A1 (en) 2017-07-13
JPWO2017119271A1 (en) 2018-01-18
JP6240360B2 (en) 2017-11-29

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