Title:
METHOD FOR PREDICTING EMERGENCY-RESPONSE PIPE-PUSHING THRUST FOR SUBWAY TUNNEL COLLAPSE
Document Type and Number:
WIPO Patent Application WO/2021/244673
Kind Code:
A1
Abstract:
Provided is a method for predicting the thrust of a pipe in pipe-pushing emergency response when a subway tunnel collapses. Comprised are: determining the height H and the severity γ of a collapse, determining the distance H from the center axis of a push pipe to the bottom of a tunnel 1, determining the horizontal length L of a slid-collapsed body at the central axis of the push pipe according to a geophysical prospecting or exploratory drilling method or estimation method; determining the cohesive force c and the internal friction angle φ of the collapsed body; determining the interface friction between the collapsed body and the outer wall of the push pipe ҭ; determining the number of push pipes m and the number of complete pipes n within the range of the horizontal length L; determining the conventional section length L of the incomplete push pipe within the horizontal length L range3 and expanding the head section length L4; determining the thrust T required for the conventional section1, the thrust required for the expansion section T2, and the required thrust T of the cone3; determining the total thrust T required to push the pipe.
Inventors:
GAO YAN (CN)
HE CHANGJIANG (CN)
MENG QINGYI (CN)
WANG JUNHOU (CN)
QIAN KUN (CN)
LIU YUNSHENG (CN)
LI FEI (CN)
YIN ZITAO (CN)
JIAO YONGYAN (CN)
LI DEZHU (CN)
LI XUJUN (CN)
GE CHAOCHAO (CN)
HE CHANGJIANG (CN)
MENG QINGYI (CN)
WANG JUNHOU (CN)
QIAN KUN (CN)
LIU YUNSHENG (CN)
LI FEI (CN)
YIN ZITAO (CN)
JIAO YONGYAN (CN)
LI DEZHU (CN)
LI XUJUN (CN)
GE CHAOCHAO (CN)
Application Number:
PCT/CN2021/109421
Publication Date:
December 09, 2021
Filing Date:
July 30, 2021
Export Citation:
Assignee:
CHINA RAILWAY NO 9 GROUP CO LTD (CN)
International Classes:
E21F17/18; E21D9/00; G01N3/24; G01N9/02; G01N19/02
Foreign References:
| CN111894675A | 2020-11-06 | |||
| CN102140928A | 2011-08-03 | |||
| CN104481582A | 2015-04-01 | |||
| JP2000160985A | 2000-06-13 |
Attorney, Agent or Firm:
BEIJING WUZHOUYANGHE & PARTNERS (CN)
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