Hydraulic Design of Unlined Rock Tunnelsby Carl J. Huval,
Serial Information: Journal of the Hydraulics Division, 1969, Vol. 95, Issue 4, Pg. 1235-1246
Document Type: Journal Paper
Unlined rock tunnel resistance coefficients can be predicted by using a rock overbreak parameter. The important considerations that enter in the design of unlined rock tunnels are summarized. It is found that the present method of prediction of hydraulic resistance is inadequate. A study of tunnel rock overbreak experience leads to a relation between rock overbreak and tunnel size. This measure of rock overbreak provides a simple correlation of flow resistance test results based on the fully rough flow equation.
Subject Headings: Tunnels | Hydraulics | Rocks | Hydraulic design | Flow resistance | Load and resistance factor design | Flow measurement | Parameters (statistics) | Correlation
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