Journal ArticleDOI
A critical review on the performance of yielding supports in squeezing tunnels
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TLDR
The purpose of this review is to discuss the recent advances in the development and application of yielding supports in squeezing tunnels, and to make recommendations for further research on these supports.About:
This article is published in Tunnelling and Underground Space Technology.The article was published on 2021-09-01. It has received 71 citations till now.read more
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Damage behaviors, prediction methods and prevention methods of rockburst in 13 deep traffic tunnels in China
Siyue He,Siyue He,Jinxing Lai,Yujian Zhong,Ke Wang,Wei Xu,Lixin Wang,Tong Liu,Chengping Zhang +8 more
TL;DR: Wang et al. as mentioned in this paper employed 13 cases of these two areas to address typical damage behaviors, the key prediction methods and prevention methods of rockburst in deep traffic tunnels, and found that Bayu tunnel, Sangzhuling tunnel, Micangshan tunnel suffered the most serious rockburst, and all 13 traffic tunnels showed different degrees of structural damages.
Journal ArticleDOI
Analytical Solution for Lined Circular Tunnels in Deep Viscoelastic Burgers Rock Considering the Longitudinal Discontinuous Excavation and Sequential Installation of Liners
TL;DR: Tunneling stoppage often occurs during tunnel construction, especially in weak and rheological ground as mentioned in this paper, and discontinuous excavation caused by the stoppage usually has a certain impact on th...
Journal ArticleDOI
Evolutions of the unfrozen water content of saturated sandstones during freezing process and the freeze-induced damage characteristics
TL;DR: In this article, low field nuclear magnetic resonance (LF-NMR) tests were conducted on five types of frozen sandstone samples and then analysis was performed to understand the freezing process of pore water and reveal the freeze-induced damage mechanism for frozen rock mass.
Journal ArticleDOI
Tunnel deformation and stress response under the bilateral foundation pit construction: a case study
TL;DR: Zhang et al. as discussed by the authors investigated the deformation and stress response of tunnel to bilateral foundation pit construction and found that tunnel deformation increased fluctuatingly with the cumulative uplift and convergent deformation of about 26mm and 16mm, respectively.
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Steel fiber reinforced concrete: A review of its material properties and usage in tunnel lining
TL;DR: In this paper, the main causes of mesh-reinforced linings cracks or structure failures are summarized, and current challenges for mesh reinforced linings are examined, and the advantages of using steel fiber reinforced concrete (SFRC) for the realization of the tunnel linings is highlighted.
References
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Journal ArticleDOI
Properties and applications of foamed concrete; a review
TL;DR: Foamed concrete possesses characteristics such as high strength-to-weight ratio and low density as discussed by the authors, which reduces dead loads on the structure and foundation, contributes to energy conservation, and lowers the labor cost during construction.
Journal ArticleDOI
Preliminary views on the potential of foamed concrete as a structural material
M. R. Jones,A. McCarthy +1 more
TL;DR: In this paper, a laboratory study of the development of foamed concrete, utilising two types of fly ash, with the potential for use in structural applications, was described, where fine fly ash (i.e. to BS EN 450) was used to partially replace Portland cement and coarse fly ash to replace sand fine aggregate.
Predicting tunnel squeezing problems in weak heterogeneous rock masses
Evert Hoek,Paul Marinos +1 more
Journal ArticleDOI
Development of a novel energy-absorbing bolt with extraordinarily large elongation and constant resistance
TL;DR: In this paper, the authors presented an innovation work on the development of a novel energy-absorbing bolt characterized by an extraordinarily large elongation and high constant resistance, which is a bolt with a compound structure consisting of a cone-like piston sliding inside an elastically-deformable sleeve pipe.
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