Results 21 to 30 of about 248,542 (278)

Subway Tunnel Structural Deformation Monitoring Method Based on Machine Vision Measurement

open access: yesChengshi guidao jiaotong yanjiu
[Objective] Tunnel deformation is related to the health of the tunnel structure, and accurate monitoring of tunnel deformation is very important for tunnel safety.
BAI Wenfeng   +5 more
doaj   +2 more sources

Fault Diagnosis and Maintenance Countermeasures of Transverse Drainage Pipe in Subway Tunnel Based on Fault Tree Analysis. [PDF]

open access: yesInt J Environ Res Public Health, 2022
Transverse drainage pipe, one of the main channels of groundwater behind the lining of subway tunnels, plays an important role in the safety and stability of the tunnel lining structure.
Liu S, Zhang X.
europepmc   +2 more sources

Impact of subway shield tunnel construction on deformation of existing utility tunnel

open access: yesFrontiers in Earth Science, 2023
In recent years, the development of urban underground space in China, especially the construction and operation of subway tunnels, has greatly relieved the pressure of urban traffic.
Shi Wei   +4 more
doaj   +1 more source

Train-induced unsteady airflow (TIUA) characteristics of track area in subway station with platform screen doors (PSDs) [PDF]

open access: yesE3S Web of Conferences, 2022
Train-induced unsteady airflow (TIUA) has a great effect on the ventilation and thermal environment of a subway line. Track area, connecting tunnel with station, is the source of the TIUA acting on subway station.
Zhang Xin   +5 more
doaj   +1 more source

ANSYS Simulation Analysis of Stray Currents on Subway Shield Tunnel [PDF]

open access: yes, 2014
In order to analyze the distribution rule and influence range of subway shield tunnel in different traction currents, a three-dimensional geometrical model and mathematical model of subway shield tunnel stray current field were built, and a finite ...
Wang, Guo, Pei, Xiaoxiang
core   +2 more sources

Study on Deformation Law of Subway Construction under Passing Existing Line in Short Distance

open access: yesAdvances in Civil Engineering, 2021
With the large-scale development and utilization of underground space projects, the subway-led Rail Transit Project is developing vigorously, and the safety and stability of subway under passing existing projects have become a key issue for the future ...
Cong-Shuang Luo   +5 more
doaj   +1 more source

Influences of excavation of deep foundation pits on deformation of adjacent double-line subway tunnels through measurement analysis

open access: yesYantu gongcheng xuebao, 2023
The excavation and unloading of foundation pits will lead to the deformations of the surrounding soil and the adjacent subway tunnels. The excessive deformation will seriously endanger the safe operation of subway tunnels.
GU Xiaowei 1, YI Zihao 2, WANG Zhe 2, CHANG Kuan 2
doaj   +1 more source

Analysis of Propagation Characteristics for Various Subway Tunnel Scenarios at 28 GHz

open access: yesInternational Journal of Antennas and Propagation, 2021
In order to meet the higher data transmission rate requirements of subway communication services, the millimeter wave (mmWave) broadband communication is considered as a potential solution in 5G technology. Based on the channel measurement data in subway
Chengjian Wang   +3 more
doaj   +1 more source

Numerical simulation of deformation of strata and stacked tunnels under traffic loads of subway

open access: yesYantu gongcheng xuebao, 2023
The traffic loads of subway have a significant impact on the strata and stacked tunnels. However, the existing studies have rarely focused on the deformation response of stacked tunnels and consider the influences of the location of the traffic loads. By
HU Yao 1, 2, LI Mingshuai 2, GUO Fei 3, XU Yinggang 4, LEI Huayang 4, WU Xiao 2, CHEN Xuejian 5
doaj   +1 more source

The Safety Risk Assessment of Mine Metro Tunnel Construction Based on Fuzzy Bayesian Network

open access: yesBuildings, 2023
With the acceleration of urbanization, the construction of urban subway tunnel networks is advancing towards deeper, denser, and larger subterranean forms.
Qiankun Wang   +5 more
doaj   +1 more source

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