Journal ArticleDOI
Analyses of the defects in highway tunnels in China
TLDR
Wang et al. as mentioned in this paper conducted a systematic study on the causes of highway tunnel defects, which revealed that lining cracks and water leakage are the most common defects in the highway tunnels of China.About:
This article is published in Tunnelling and Underground Space Technology.The article was published on 2021-01-01. It has received 46 citations till now.read more
Citations
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Journal ArticleDOI
Automatic detection method of tunnel lining multi‐defects via an enhanced You Only Look Once network
TL;DR: A novel deep learning‐based model, named You Only Look Once network v4 enhanced by EfficientNet and depthwise separable convolution (DSC; YOLOv4‐ED), is proposed, used as the backbone to improve the identification accuracy of indistinguishable defect targets in complex tunnel background and light conditions.
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Influence of cracks at the invert on the mechanical behavior of the tunnel structures
TL;DR: In this paper, the authors investigated the influence of the longitudinal cracks at the invert on the mechanical behavior of the tunnel linings and found that cracks result in a distinct decrease in the bending moment at the damaged area, whereas the thrust force is less sensitive to the number of cracks.
Journal ArticleDOI
Evaluating Deterioration of Tunnels Using Computational Machine Learning Algorithms
TL;DR: An integrated part of the transportation infrastructure, structural evaluation and inspection of tunnels are vital tasks to assess the deterioration of tunnels and maintain the infrastructure.
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Prediction and analysis of slurry shield TBM disc cutter wear and its application in cutter change time
TL;DR: Wang et al. as discussed by the authors developed a new disc cutter wear prediction model considering energy conversion and uneven thrust distribution for explaining this problem. But the prediction accuracy of the proposed model will decrease with the increase of the tunneling distance, so the undetermined coefficients k and b need to be updated in a timely manner.
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Bearing Characteristics and Failure Mechanism of a Novel Plate-Short Anchor Structure for Tunnel Crack Reinforcement
TL;DR: In this paper , a plate-short anchor assembly structure was proposed to solve tunnel diseases caused by tunnel cracks in mountain tunnels, and the article proposed a new repair method of tunnel cracks.
References
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Assessment of damage in mountain tunnels due to the taiwan chi-chi earthquake
TL;DR: In this paper, a systematic assessment of damage in the mountain tunnels in Taiwan after the Chi-Chi earthquake was carried out and the results showed that the degree of damage is associated with the geological condition and structural arrangement of the tunnel.
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Auto inspection system using a mobile robot for detecting concrete cracks in a tunnel
TL;DR: In this paper, the authors proposed a system for inspecting and measuring cracks in concrete structures to provide objective crack data to be used in evaluating safety, which consists of a mobile robot system and a crack detection system.
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Tunnel maintenance in Japan
TL;DR: In this paper, the authors present a recent maintenance technology and typical deformation cases of Japanese railway tunnels are presented in order to understand the repair and reinforcement methods of deformation tunnels, which are divided into: (a) countermeasures against earth pressure, (b), countermeasures for deteriorate lining, (c) countermeasure against leakage of water and frost damage, and (d) counter-measures against spalling.
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Inspection, maintenance and repair of tunnels: International lessons and practice
TL;DR: In this paper, the authors describe some of the experience being gained in this aspect abroad and the importance of learning from this and applying this knowledge to tunnel design, construction and operation and maintenance in South Africa.
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The Prospect of wildlife tourism
TL;DR: In this paper, the authors extended an overview of the worldwide development of wildlife tourism, introduced the concept of tourism, and analyzed the development of international wildlife tourism and its international trends.