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Title:
ANCHORING METHOD EMPLOYING MULTIPLE ANCHOR BOLTS TO SIMULTANEOUSLY INJECT SPECIFIC QUANTITIES OF GROUT
Document Type and Number:
WIPO Patent Application WO/2019/109701
Kind Code:
A1
Abstract:
An anchoring method employing multiple anchor bolts to simultaneously inject specific quantities of grout comprises the following steps: performing on-site measurement on rocks surrounding a roadway to obtain a grout penetration radius, an effective pressurized grouting length, an injected-grout pore fill rate and a formation porosity, and performing, according to a formula, calculation to obtain a single-hole grout volume; installing a first-level flow splitter (7) at a main pipe (6) of a grout pump (5) to preliminarily split a grout flow, connecting the same to a first-level branch pipe (8), and further connecting a second-level flow splitter (9) to further split the grout flow, wherein connection to third-level and fourth-level flow splitters can be sequentially achieved to realize simultaneous injection of grout; and installing flow meters (11) at openings of grouting pipes to control grouting volumes, thereby realizing injection of specific quantities of grout.

Inventors:
ZHANG, Nong (Science Academy Of China University Of Mining And Technology No.1 University Road, Xuzhou, Jiangsu 6, 221116, CN)
XIE, Zhengzheng (Science Academy Of China University Of Mining And Technology No.1 University Road, Xuzhou, Jiangsu 6, 221116, CN)
XIANG, Zhe (Science Academy Of China University Of Mining And Technology No.1 University Road, Xuzhou, Jiangsu 6, 221116, CN)
AN, Yanpei (Science Academy Of China University Of Mining And Technology No.1 University Road, Xuzhou, Jiangsu 6, 221116, CN)
Application Number:
CN2018/105351
Publication Date:
June 13, 2019
Filing Date:
September 13, 2018
Export Citation:
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Assignee:
CHINA UNIVERSITY OF MINING AND TECHNOLOGY (Science Academy Of China University Of Mining And Technology No.1 University Road, Xuzhou, Jiangsu 6, 221116, CN)
International Classes:
E21D11/10; E21D20/00
Foreign References:
CN108035738A2018-05-15
CN101749030A2010-06-23
CN105888709A2016-08-24
Other References:
SHI, WEISHENG: "Full-Face Curtain Grouting Technology in a Period Of Qi Yue Shan-Long Tunnel", CHINA NEW TECHNOLOGIES AND PRODUCTS, no. 3, 10 February 2011 (2011-02-10), pages 68 - 69, ISSN: 1673-9957
LI, FULIN: "Construction Technology of Grouting Reinforcement for Railway Subgrade", MANAGEMENT & TECHNOLOGY OFSME, 15 January 2015 (2015-01-15), ISSN: 1673-1069
Attorney, Agent or Firm:
NANJING SUGAO PATENT AND TRADEMARK FIRM (ORDINARY PARTNERSHIP) (Room 1912, Longtaiguoji Mansion No.198, East Zhongshan Street, Qinhuai Distric, Nanjing Jiangsu 5, 210005, CN)
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