Title:
SPRAYING TEMPORARY SUPPORT AND BOLT PERMANENT SUPPORT METHOD AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/063326
Kind Code:
A1
Abstract:
Disclosed are a spraying temporary support and bolt permanent support method and system; a tunnel excavation construction operation is composed of a plurality of operation cycle units, and each operation cycle unit comprises the following steps: tunnelling by at least one row pitch to form a newly excavated tunnel; spraying a spray material onto the surface of the newly formed tunnel to form a sealing spray layer on the surface of surrounding rock; and forming permanent support for the newly excavated tunnel by constructing bolts. Effective support is formed by means of a spray layer for a newly formed tunnel, tunnelling and support are successively achieved, the technological process is simple and convenient, and a heading machine-mounted roof or a self-moving shed support is not required to support surrounding rock, reducing consumed time and increasing a supportable area of a tunnel, and satisfying the requirements of rapid excavation of a coal mine tunnel. In addition, a manual carrying manner is not required to support a tunnel, reducing labor intensity and increasing support efficiency. Also disclosed is a drilling, grouting, anchoring, and pretensioning integrated bolt support device, comprising a bolt mechanism, a drive mechanism, a grouting mechanism, and a thrusting mechanism. Also disclosed is a construction method for a drilling, grouting, anchoring, and pretensioning integrated bolt support device. The drilling, grouting, anchoring, and pretensioning integrated bolt support device has a simple structure, is easy to operate, and ensures a support effect.
Inventors:
KANG HONGPU (CN)
JIANG PENGFEI (CN)
WANG ZIYUE (CN)
WU YONGZHENG (CN)
WEI YAOZHONG (CN)
LIU CHANG (CN)
GUO JICHANG (CN)
LUO CHAO (CN)
CAO XIAOMING (CN)
CHEN ZHILIANG (CN)
YANG JIANWEI (CN)
JIANG PENGFEI (CN)
WANG ZIYUE (CN)
WU YONGZHENG (CN)
WEI YAOZHONG (CN)
LIU CHANG (CN)
GUO JICHANG (CN)
LUO CHAO (CN)
CAO XIAOMING (CN)
CHEN ZHILIANG (CN)
YANG JIANWEI (CN)
Application Number:
PCT/CN2021/121477
Publication Date:
March 31, 2022
Filing Date:
September 28, 2021
Export Citation:
Assignee:
CCTEG COAL MINING RES INSTITUTE (CN)
TIANDI SCIENCE & TECH CO LTD (CN)
TIANDI SCIENCE & TECH CO LTD (CN)
International Classes:
E21D11/10; E21D11/00
Foreign References:
| CN112360500A | 2021-02-12 | |||
| CN112360501A | 2021-02-12 | |||
| CN112228102A | 2021-01-15 | |||
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| CN112360502A | 2021-02-12 | |||
| CN103195442A | 2013-07-10 | |||
| CN108035754A | 2018-05-15 | |||
| CN108979688A | 2018-12-11 | |||
| CN101270667A | 2008-09-24 | |||
| CN103195441A | 2013-07-10 | |||
| CN110821538A | 2020-02-21 | |||
| CN103422869A | 2013-12-04 | |||
| JPH0953396A | 1997-02-25 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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