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http://onlinepubs.trb.org/Onlinepubs/hrr/1970/339/339-003.pdf
The design of a support system is usually a matter of selection. The selection is more complex than indicated by Tables 1 and 2. Throughout planning and design, the engineer needs to be aware that the geology of the material to be tunneled is the most important variable in establishing the design, construction, and, ultimately, the cost of the tunnel. MODERN CONCEPTS OF THE DESIGN OF TUNNEL SUPPORT …
https://www.researchgate.net/publication/294243062_Design_of_tunnel_support
Design of tunnel support. Despite the success of New Austrian Tunneling Method (NATM) in many weak ground tunnels, a newer concept, the Norwegian Method of Tunneling (NMT) was introduced for drill-and-blast tunnels in jointed rocks which tend to overbreak.
https://rocscience.com/assets/resources/learning/papers/A-Two-Dimensional-Approach-for-Designing-Tunnel-Support-in-Weak-Rock.pdf
The design of support for tunnels in weak rock is an iterative process. A good starting point is essential to the process and facilitates safe and economic design. Support design for tunnels in weak rock is a clearly three-dimensional problem. However, currently there are very few practical three-dimensional software tools for carrying out the task.
https://antraquip.net/tunnel-support-system
Tunnel Support System. Arch Canopy System Antraquip’s Arch Canopy (Barrel Vault) System is designed for pipe roofing, forepoling, anchoring and drainage. For underground infrastructure building in typical urban areas, poor ground conditions and for all underground construction in weak and disturbed soils modern tunneling engineers have ...
https://www.sciencedirect.com/science/article/pii/0013795279900449
Design of tunnel support systems using ground freezing. Eng. GeoL., 13: 375--395. One of the more promising techniques in soft ground tunneling through urbanized areas is the use of artificially frozen ground for temporary tunnel support. This paper describes the general design considerations involved in the ground freezing method.Cited by: 9
https://www.rocscience.com/documents/pdfs/rocnews/winter2012/Rock-Support-Interaction-Analysis-for-Tunnels-Hoek.pdf
Rock-Support Interaction analysis for tunnels in weak rock masses Introduction Tunnelling in weak rock presents some special challenges to the geotechnical engineer since misjudgements in the design of support systems can lead to very costly failures.
https://www.fhwa.dot.gov/bridge/tunnel/pubs/nhi09010/tunnel_manual.pdf
design stages to pay attention to detail in laying out the tunnel cross-section to permit easy inspection and maintenance not only of mechanical and electrical equipment, but also of the tunnel structure itself. The tunnel structural systems depend on the type of tunnel, the geometrical configuration of the cross section, and method of construction.
https://link.springer.com/article/10.1007%2FBF01239496
Engineering Classification of Rock Masses for the Design of Tunnel Support. An analysis of some 200 tunnel case records has revealed a useful correlation between the amount and type of permanent support and the rock mass qualityQ, with respect to tunnel stability.Cited by: 3537
https://ez-pdh.ez-pdh.com/course-material/CV7053-Design-and-Construction-of-Road-Tunnels-Part-3-Design-and-Detailing.pdf
tunnel support. Initially formulated for application in rock tunneling in the early 1960’s, NATM has found application in soft ground in urban tunneling in the late 60’s and has since then enjoyed a broad, international utilization in both rural and urban settings.
https://en.wikipedia.org/wiki/Tunnel
Metro, the owner of the LA subway system, issued a statement through their engineering staff about the design and consideration that goes into a tunnel system. Engineers and architects perform extensive analysis as to how hard they expect earthquakes to hit that area. All of this goes into the overall design and flexibility of the tunnel.
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