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Title:
HIGH-EFFICIENCY NORMAL-PRESSURE TOOL REPLACEMENT CONSTRUCTION METHOD FOR WATER-RICH SANDY COBBLE STRATUM
Document Type and Number:
WIPO Patent Application WO/2021/213098
Kind Code:
A1
Abstract:
A high-efficiency normal-pressure tool replacement construction method for a water-rich sandy cobble stratum. According to the construction method, any two adjacent plain piles (10) are meshed together, such that the reinforcing integrity effect is better. The construction method shows high stratum reinforcing speed and high safety in tool replacement operation, and can shorten the construction period and save on costs. The construction method can reduce noise and vibration, has a low impact on stratum and the surrounding environment, and does not require any slurry operation, thereby making a construction site clean, reducing ground pollution, saving on energy, and meeting green construction standards and requirements.

Inventors:
LV TAO (CN)
YIN SUJIANG (CN)
SUN FAQUAN (CN)
TONG FANGSHUO (CN)
ZHANG KAI (CN)
LI HUI (CN)
CUI GUANGYU (CN)
LIU XIAODI (CN)
ZHANG HUICHUN (CN)
ZHANG TONG (CN)
WU JIAN (CN)
Application Number:
PCT/CN2021/081905
Publication Date:
October 28, 2021
Filing Date:
March 19, 2021
Export Citation:
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Assignee:
CHINA RAILWAY NO 9 GROUP CO LTD (CN)
CHINA RAILWAY NO 9 GROUP NO 4 ENG CO LTD (CN)
International Classes:
E21D9/08; E21D9/00; E21D11/10; E21D11/38
Foreign References:
CN111502672A2020-08-07
CN105545315A2016-05-04
JP2002194995A2002-07-10
Other References:
HE, SHANNING: "Shaft Consolidation by Plain Piles for Large Diameter Shield Boring", TUNNEL CONSTRUCTION, vol. 30, no. 1, 10 August 2010 (2010-08-10), pages 406 - 409, XP055859943, ISSN: 2096-4498
LIAN, XIAOTAO ET AL.: "Technology of Replacing Cutters with Cabin Opening Under Atmospheric Pressure for Earth Pressure Balance Shield Machine in Upper-soft and Lower-hard Stratum", RAILWAY CONSTRUCTION TECHNOLOGY, no. 10, 20 October 2019 (2019-10-20), pages 143 - 146,159, XP055859958, ISSN: 1009-4539
Attorney, Agent or Firm:
BEIJING WUZHOUYANGHE & PARTNERS (CN)
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