Title:
LARGE-DEFORMATION AND CONSTANT-RESISTANCE SUPPORT GROUTING ANCHOR CABLE
Document Type and Number:
WIPO Patent Application WO/2023/142654
Kind Code:
A1
Abstract:
A large-deformation and constant-resistance support grouting anchor cable, that is, a grouting NPR anchor cable, comprising: an anchor cable body, wherein a tail end of the anchor cable body is provided with an anchoring section (18) used for being anchored at the hole bottom of a surrounding rock borehole (11); a constant-resistance device, which comprises a constant-resistance body (4) and a constant-resistance sleeve (6), wherein the constant-resistance body (4) is sleeved on the periphery of the anchor cable body, the constant-resistance sleeve (6) is arranged on the periphery of the constant-resistance body (4), and the constant-resistance body (4) is used for moving in the constant-resistance sleeve (6) in an axial direction of the anchor cable and with constant resistance; a constant-resistance device sealing component, which is arranged at a tail end of the constant-resistance device and used for plugging a gap between the anchor cable body and the surrounding rock borehole (11), wherein the constant-resistance device presses against the constant-resistance device sealing component; and an anchoring component, which comprises a tray (3) and an anchor device (2), wherein the anchor device (2) and the tray (3) are both arranged on the end of the anchor cable body extending out of the surrounding rock borehole (11) and are used for anchoring and locking the anchor cable body after the anchor cable body is tensioned to achieve a designed pre-tightening force.
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Inventors:
HU JIE (CN)
HE MANCHAO (CN)
TAO ZHIGANG (CN)
PENG DI (CN)
HE MANCHAO (CN)
TAO ZHIGANG (CN)
PENG DI (CN)
Application Number:
PCT/CN2022/135223
Publication Date:
August 03, 2023
Filing Date:
November 30, 2022
Export Citation:
Assignee:
UNIV CHINA MINING (CN)
BEIJING ZHONGKUANG INNOVATION ALLIANCE ENERGY ENV SCIENCE ACADEMY (CN)
BEIJING ZHONGKUANG INNOVATION ALLIANCE ENERGY ENV SCIENCE ACADEMY (CN)
International Classes:
E21D21/00; E21D20/02
Foreign References:
| CN115182765A | 2022-10-14 | |||
| CN111894643A | 2020-11-06 | |||
| CN104963710A | 2015-10-07 | |||
| CN207229140U | 2018-04-13 | |||
| EP2395198A1 | 2011-12-14 |
Attorney, Agent or Firm:
BEIJING HECHUANG ZHIXIN PATENT AGENCY CO., LTD. (CN)
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