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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://www.rocscience.com/documents/pdfs/rocnews/winter2012/Rock-Support-Interaction-Analysis-for-Tunnels-Hoek.pdf
rock at the tunnel face provides an initial support pressure equal to the in situ stress p o. As the tunnel face advances and the face moves away from the section under consideration, the support pressure gradually decreases until it reaches zero at some distance behind the face. Also included in Figure 4 is the radius of the plastic zone r p
https://apps.dtic.mil/dtic/tr/fulltext/u2/a219783.pdf
Construction Park River project Rock mechanics, : Design Rock classification Rocks 19. ABSTRACT (Continue on reverse if necessary and identify by block number) This report discusses tunnel design procedures based on various rock mass classification systems. A comparison is made between the tunnel support design based on the classicalCited by: 21
https://www.researchgate.net/publication/328081902_Stability_Analysis_and_Design_of_Rock_Support_for_Tunnel_and_cavern_of_Kathmandu_University_Geo-lab
The rock support design for such opening depends upon the rock mass strength. In this study a proposed Kathmandu University Geo-Lab tunnel and cavern, which passes through weak rock mass...
http://onlinepubs.trb.org/Onlinepubs/hrr/1970/339/339-003.pdf
pects of design of the support systems for transportation tunnels. TYPES AND FUNCTIONS OF TUNNEL SUPPORT SYSTEMS The basic functions of a tunnel support system are to keep the tunnel stable and to make the opening usable. The specific purposes of support systems, however, depend greatly on the purposes of the tunnel.
https://www.researchgate.net/publication/226039636_Engineering_Classification_of_Rock_Masses_for_the_Design_of_Tunnel_Support
Abstract 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...
https://www.civilax.com/tunnel-design/
In tunnel designing books or design standards, it can be found the load that need to be considered for the lining design depending on the rock type. "EM 1110-2-2901 Tunnels and Shafts in Rock" on of most commonly used standard that can be reffed for our designs. If provides a guide line to design a tunnels depending on different ground conditions.
https://www.sciencedirect.com/science/article/pii/S1674775515301840
Sep 25, 2012 · When a rock with mass m is ejected from the tunnel roof at an ejection velocity v e, the support system with a large displacement capacity contains the ejected rock after a displacement of d s, the energy demand (Kaiser et al., 1996) is (4) E = 1 2 m v …Cited by: 217
https://link.springer.com/article/10.1007%2FBF01239496
Dec 01, 1974 · 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 quality Q, with respect to tunnel stability.Cited by: 3549
http://nff.no/wp-content/uploads/2014/01/Publication_19.pdf
The basic approach to rock support in Norwegian tunnelling is to utilise the inher-ent qualities of the rock mass while considering the safety during implementation and operation. Economy during implementation used to be the dominating aspect to consider. Methods like the use of concrete lining as a means of rock support was
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