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Advances in Railway Tunnelling Engineering: Design, Stability and Construction

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A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Civil Engineering".

Deadline for manuscript submissions: closed (20 May 2022) | Viewed by 5732

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Special Issue Editor

Prof. Dr. Yiguo Xue

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Guest Editor

Geotechnical and Structural Engineering Research Center, Shandong University, Jinan, China
Interests: new technology and method for advanced prediction of unfavorable geology in tunnels; key technical problems in the construction of subsea tunnels

Special Issue Information

Dear Colleagues,

High-speed rail developed rapidly around the world over the past 15 years, and many high-speed rail projects are currently under construction or near completion. Railways in mountainous areas are made up of tunnels, and tunnels are being constructed at an annually increasing rate of 7% worldwide for the next 5 to 10 years. Moreover, many cities across the world have developed underground railway systems. Challenges and innovative solutions in planning, construction, operation, and management of metro tunnels have been an important component of underground engineering. Thus, the development of tunneling technology has also drawn increasing attention from both academics and policy makers. The Special Issue aims to share recent developments in the design, stability, and construction of railway tunnels. This issue is committed to publishing original papers and case studies on the interdisciplinary aspects of planning, creating, and regulating underground space, which includes geo-investigation, geomechanics analysis, design and modeling, construction and monitoring, and maintenance and rehabilitation of railway tunnels or urban subway stations.

Prof. Dr. Yiguo Xue
Guest Editor

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Keywords

railway tunneling engineering
geo-investigation
water and mud inrush hazard in railway tunnels
stability of surrounding rock in tunnels
risk assessment
advance prediction of unfavorable geology
hazard migration
grouting technology

Published Papers (3 papers)

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Research

18 pages, 3484 KiB

Open AccessArticle

Preliminary Study on Double Lining Support Design for Water Plugging of Highway Tunnel under High Water Pressure in Mountain Area Based on Limited Drainage

by Yanping Ding, Xuefu Zhang and Bin Zhang

Appl. Sci. 2022, 12(15), 7905; https://doi.org/10.3390/app12157905 - 6 Aug 2022

Cited by 5 | Viewed by 1501

Abstract

In the water-rich karst regions, high water and mud outbursts are common geological disasters in tunnel construction. To ensure the safe and smooth construction of tunnel projects, it is necessary to consider anti-water pressure, water inrush prevention and geological disasters during the design of tunnels. Based on the Yongfutun Tunnel Project, this paper studies the application and effect of radial grouting and curtain grouting, which involves those in high-water-pressure tunnels under double-layer support conditions. To obtain the effects and parameters of radial grouting and curtain grouting, the influences of different grouting ranges on the tunnel’s surrounding rocks and supporting structures were analyzed and the finite difference method was adopted. The results show that the radial grouting of the surrounding rock can notably improve the initial support of the tunnel, but the impact is less obvious when the grouting range exceeds 4 m. The design of radial grouting is recommended to be 4.0 m to 4.5 m. Curtain grouting can effectively reduce the external water pressure of the tunnel lining. The external water pressure of the grouting area is 23% greater than that without curtain grouting. Curtain grouting can slow down the infiltration of external water pressure. This is beneficial to the stress of the tunnel lining structure, but the improvement in initial support force is slight. Moreover, curtain grouting improves the safety reserve of the secondary lining by strengthening the self-stability ability of the surrounding rock. Meanwhile, the double-layer primary support can effectively share the external water pressure and surrounding rock pressure. This study provides a certain reference for the lining design of high-water-pressure tunnels. Full article

(This article belongs to the Special Issue Advances in Railway Tunnelling Engineering: Design, Stability and Construction)

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18 pages, 25587 KiB

Open AccessArticle

Influence of Foundation Deformation and Vehicle Parameters on the Vertical Safety of High-Speed Trains

by Wuji Guo, Zhiping Zeng, Fushan Liu and Weidong Wang

Appl. Sci. 2022, 12(11), 5704; https://doi.org/10.3390/app12115704 - 3 Jun 2022

Cited by 1 | Viewed by 1245

Abstract

This paper analyzes the influence of foundation deformation and the variation coefficient of vehicle parameters on the reliability of a vehicle vertical safety. Based on the theory of stochastic analysis of nonlinear vehicle–track coupled systems, combining the generalized probability density evolution theory, this paper takes the reduction rate of wheel load as the measurement index, considering the combined effects of stochasticity of track irregularity, stochasticity of vehicle parameters and foundation deformation, and studies the reliability of vehicle vertical safety under different working conditions. The results showed that (1) compared with the up-arch deformation, the settlement deformation has a greater impact on the operation safety; (2) with the increase of the variation coefficient of the vehicle parameters, the reliability of the vehicle vertical safety gradually decreases, so it should be combined with vehicle maintenance when setting the settlement limits; (3) when the vehicle operation speed is lower than 375 km/h, the stochasticity of the vehicle parameters has a more significant impact on the vehicle vertical safety, while when the speed is higher than 375 km/h, the foundation deformation amplitude has a more significant influence; (4) when the running speed is higher than 350 km/h, there may be a better set of vehicle parameters to ensure driving safety. It can be seen that in the determination of the high-speed railway foundation deformation limit value, the influence of deformation direction, vehicle parameters stochasticity, and operation speed should be considered. Full article

(This article belongs to the Special Issue Advances in Railway Tunnelling Engineering: Design, Stability and Construction)

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24 pages, 14118 KiB

Open AccessArticle

Numerical Simulation of Ultra-Shallow Buried Large-Span Double-Arch Tunnel Excavated under an Expressway

by Jianxiu Wang, Ansheng Cao, Zhao Wu, Zhipeng Sun, Xiao Lin, Lei Sun, Xiaotian Liu, Huboqiang Li and Yuanwei Sun

Appl. Sci. 2022, 12(1), 39; https://doi.org/10.3390/app12010039 - 21 Dec 2021

Cited by 5 | Viewed by 2507

Abstract

The temporal and spatial effects of a complicated excavation process are vital for an ultra-shallow buried large-span double-arch tunnel excavated under an expressway in service. Numerical simulations are urgent and necessary to understand the effect of the total construction process. Taking Xiamen Haicang tunnel as a research object, the total excavation process of three pilot tunnels and the three-bench reserved core soil method of an ultra-shallow buried large-span double-arch tunnel with a fault fracture zone under an expressway was simulated using software FLAC^3D. The deformation of the surface, surrounding rock, underground pipelines, tunnel support structure and partition wall of the three pilot tunnels and the main tunnel was analyzed, and the dangerous areas and time nodes were obtained. When the tunnel was excavated to the fault fracture zone, the deformation of the surface and surrounding rock increased significantly. The rock and soil within 20 m behind the excavation surface of the pilot tunnel were greatly disturbed by the excavation. During the excavation of the main tunnel, the horizontal displacement of the middle partition wall moved slightly towards the main tunnel excavated first. The research results can provide a reference for the construction design of double-arch tunnels. Full article

(This article belongs to the Special Issue Advances in Railway Tunnelling Engineering: Design, Stability and Construction)

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