Effect of the excavation clearance of an under-crossing shield tunnel on existing shield tunnels
Tunnelling and Underground Space Technology, 2018 Abstract The excavation by earth pressure balance (EPB) shield could cause stress fields varied, which is harmful to adjacent existing structures. Thus the effect of excavation clearance of the EPB shield on the settlement of existing structures should be taken into account.
Minglun Yin +4 more
openaire +2 more sources
Failure Mode and Stability of Excavation Face on Shield Tunnel Undercrossing Existing Tunnel [PDF]
, 2019 The supporting pressure value of excavation face directly determines the stable state of excavation face, and its value will directly lead to instability of excavation face if the value is too small.
Xue, Fei, Zhang, Mengxi
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Study on Stress Characteristics Response of Submarine Shield Segment Under Ultra-high Water Pressure
Electronic Journal of Structural EngineeringIn the construction and operation stage of shield tunnel, mastering and clarifying the mechanical characteristics of the overall structure is essential for ensuring shield tunnel safety.
Bing Li +4 more
doaj +3 more sources
Shuiwen dizhi gongcheng dizhi, 2022 The influence of the shield tunnel construction on the adjacent grounds and buildings is a fundamental issue for the safe construction and regular service of the shield tunnel in the soft soil area.
Tao PAN
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LIQUID-SOLID COUPLING RESPONSE OF SURROUNDING ROCK MASS OF LARGE-DIAMETER RIVER-CROSSING SHIELD TUNNEL [PDF]
, 2023 The purpose is to investigate the response of seepage field, displacement field and stress field in the surrounding rock mass during dynamic tunneling in soft soil area. Relied on a large-diameter river-crossing shield tunnel project, considering driving
Zhang, Shanglong +3 more
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Study on the Influence of an Under-Crossing Parallel Double-Line Shield Tunnel on the Existing Tunnel Structure [PDF]
, 2023 Extra care should be taken when new tunnels pass through an existing tunnel. If it is not handled properly, this will affect the operation safety of the existing line, and bring security risks to the train’s operation.
Jiahua Zhang +4 more
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Comparative study on ground loss ratio due to shield tunnel with different diameters
Yantu gongcheng xuebao, 2018 The ground loss ratio is one of the main factors causing ground surface settlements. The measured data of the maximum ground settlement from some areas of China are collected.
WU Chang-sheng 1,2, ZHU Zhi-duo 1,2
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, 2022 Systems of excavation, thrust, muck removal, and erection of lining segments are key processes of conventional boring using shield tunneling machines.
Peerun, Mohammud Irfaan +11 more
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Mechanisms and characteristics for deterioration of shield tunnels under surface surcharge
Yantu gongcheng xuebao, 2017 The metro shield tunnel in soft soil area is investigated and analyzed. It is shown that overlarge transverse deformations of the shield tunnel are induced due to the surface surcharge, which is an allowable magnitude according to the current ...
HUANG Da-wei 1, ZHOU Shun-hua 2, LAI Guo-quan 3, FENG Qing-song 1, LIU Lin-ya 1
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Finite element modelling of blowouts in compressed air tunnels [PDF]
, 1990 This study develops criteria for predicting blowouts in compressed air tunnels through an integrated design approach using empirical laboratory test data in a finite element model.
Peck, James G.
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