Distress Detection in Subway Tunnel Images via Data Augmentation Based on Selective Image Cropping and Patching [PDF]
Sensors, 2022 Distresses, such as cracks, directly reflect the structural integrity of subway tunnels. Therefore, the detection of subway tunnel distress is an essential task in tunnel structure maintenance.
Keisuke Maeda +5 more
doaj +2 more sources
Long term settlement of twin subway tunnels induced by train loads under passenger flow variation [PDF]
Scientific ReportsSubway operations generate loads that can cause uneven soil settlement around tunnels, impacting the safety of subway train operations. Existing research often simplifies the analysis of subway loads and modeling, which does not accurately reflect the ...
Chunling Yan +4 more
doaj +2 more sources
Artificial intelligence-assisted method of structural health monitoring of subway shield tunnel based on insulation degradation location. [PDF]
PLoS ONEStray current leakages inevitably arise to seriously threaten the reliability of the subway tunnel structure and third-party system through electrochemical corrosion.
Yiwei Zhao, Chengtao Wang, Yi Tao
doaj +2 more sources
Method for identifying the locations of longitudinal seams based on LiDAR data detected inside shield tunnel [PDF]
MethodsXAfter extracting the longitudinal seam (LS) LiDAR detected data inside shield tunnel, although most can be obtained, some are obscured by tunnel objects and scanning limitations .
Yu-Lin Chen +2 more
doaj +2 more sources
Analysis of Propagation Characteristics for Various Subway Tunnel Scenarios at 28 GHz
International 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
Yantu 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
Vibration Characteristics of Subway Tunnel Structure in Viscous Soil Medium
Advances in Materials Science and Engineering, 2021 Based on research on subway tunnels in a viscous soil medium, this paper establishes the vibration equation of a tunnel structure by using the theory of moderately thick cylindrical shells and the method of wave propagation. The soil around the tunnel is
Dawei Ren +3 more
doaj +1 more source
The Safety Risk Assessment of Mine Metro Tunnel Construction Based on Fuzzy Bayesian Network
Buildings, 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
WINNER model for subway tunnel at 5.8 GHz [PDF]
2012 12th International Conference on ITS Telecommunications, 2012 Modern subways operation relies on wireless systems based on IEEE802.11x modems deployed inside tunnels. Constraints on robustness and needs for high data rates led to the use of MIMO techniques. In order to evaluate performance of MIMO systems in dynamic configurations with moving trains, it is mandatory to develop adequate dynamic channel model.
Hairoud, Siham +4 more
openaire +3 more sources
A case study of newly tunnels over-crossing the existing subway tunnels
International Journal of Distributed Sensor Networks, 2022 Due to the continuous expansion of congested urban areas, many new tunnels are inevitable to over-cross the existing subway lines and may even affect the operation of existing lines. It is vital to investigate the response of existing tunnel caused by over-crossing tunneling. In this study, a case history of closely spaced twin tunnels excavated above
Ben Wu 0003 +4 more
openaire +3 more sources