Belchen Tunnel
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References
- Madsen, F. T., A. Fluckiger, and L. Hauber. "New Investigations On Swelling Rocks In the Belchen Tunnel, Switzerland." Proc. of 8th ISRM Congress, Tokyo. N.p.: International Society for Rock Mechanics, 1995. N. pag. Print.
- Steiner, W. "Swelling Rock in Tunnels: Rock Characterization, Effect of Horizontal Stresses and Construction Procedures." International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts 31.2 (1994): 361-80. Print.