Results 31 to 40 of about 915,918 (286)

Augmented satellite InSAR for assessing short-term and long-term surface deformation due to shield tunnelling

open access: yesTunnelling and Underground Space Technology, 2021
In this work, we investigate if, when, and how satellite InSAR can be used for evaluating surface settlements that occur during shield tunnelling in soft soil areas.
K. J. Reinders   +3 more
semanticscholar   +1 more source

Predictions of ground surface settlement for shield tunnels in sandy cobble stratum based on stochastic medium theory and empirical formulas

open access: yesUnderground Space, 2023
This paper focuses on the prediction of ground surface settlement induced by shield tunnelling in sandy cobble stratum. Based on the stochastic medium theory, an analytical solution to predict the surface settlement is developed considering the ...
Fan Wang, Xiuli Du, Pengfei Li
doaj   +1 more source

Parameters used for prediction of settlement trough due to TBM tunnelling [PDF]

open access: yesArchives of Civil Engineering, 2021
One of major design problems associated with shallow tunnelling in urbanized areas is the prediction of ground displacements caused by the construction process.
Witold Bogusz   +2 more
doaj   +1 more source

Unit tests on shield tail brush annular sealing system and its watertightness mechanism

open access: yesYantu gongcheng xuebao, 2023
The shield tunnelling method has become the mainstream construction one for urban subway tunnels. Due to the poor sealing effects of shield tail brushes, many severe safety accidents such as water and slurry leakage occur frequently.
ZHONG Xiaochun 1, MO Nuanjiao 2, YU Mingxue 1, ZHU Weibin 2, ZHU Nengwen 3, YOU Zhi 1
doaj   +1 more source

Effects of Jack Thrust on the Damage of Segment Lining Structure during Shield Machine Tunnelling

open access: yesBuildings, 2023
Constructing a tunnel with a large longitudinal slope and a small-radius sharp curve is challenging. During the construction process, it necessitates a series of intricate operations, including adjusting the horizontal and vertical posture of the shield ...
Ming Xu   +5 more
doaj   +1 more source

Behaviours of existing shield tunnels due to tunnelling underneath considering asymmetric ground settlements

open access: yesUnderground Space, 2022
New tunnelling underneath could influence existing shield tunnels in underground spaces. The evaluation of the influences of tunnelling-induced ground movements on existing tunnels has been a major concern during urban construction. This paper presents a
Xiaolu Gan   +4 more
doaj   +1 more source

Effect of the excavation clearance of an under-crossing shield tunnel on existing shield tunnels

open access: yesTunnelling 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

Three-dimensional numerical simulation of slurry fracturing during shield tunnelling

open access: yesYantu gongcheng xuebao, 2021
The slurry shield tunnelling is an important construction method which is widely applied in tunnel engineering. This method can lead to slurry fracturing failure to the stratum under complex conditions. However, there is no readily available method which
CHEN Tie-lin , ZHOU Mo-zhen
doaj   +1 more source

Finite Element Analysis of Natural Thawing Heat Transfer of Artificial Frozen Soil in Shield-Driven Tunnelling

open access: yesAdvances in Civil Engineering, 2020
The technology of artificial horizontal freezing method is increasingly being used in the soil reinforcement of urban underground projects such as shield-driven tunnelling.
Yong Fu   +5 more
doaj   +1 more source

Intelligent Analysis of Construction Costs of Shield Tunneling in Complex Geological Conditions by Machine Learning Method

open access: yesMathematics, 2023
The estimation of construction costs for shield tunneling projects is typically based on a standard quota, which fails to consider the variation of geological parameters and often results in significant differences in unit cost. To address this issue, we
Xiaomu Ye   +5 more
doaj   +1 more source

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