"Tests were performed on a model of a rockfill dam with an internal spillway for the purpose of developing a method of predicting the flow rate through the dam. The flow rate depends upon the head but is affected by the rock size and the height of the impervious core; there- fore, these factors were varied in the study. A relation for flow rate in terms of head was found for each combination of rock size and core height used and was compared to the general weir equation to find the coefficient of contraction; thus the effect of changing core height and rock size was isolated in the coefficient of contraction. A relation between coefficient of contraction, core height, rock size, and head was developed and, for vertical cores, it can be used to find the coefficient of contraction. The flow rate can then be calculated from the general weir equation Q = 2/3 bM (2g)1/2 (H)3/2. The equation gives results within 5 percent of measured flows. Cores with a slope parallel to the upstream face of the dam were also used in the model. This change in slope causes an increase in flow rate over that obtained with the same head, rock size and vertical core height"--Abstract, page 2.
Munger, Paul R.
Muir, Clifford D.
Schaefer, Rodney A., 1926-2002
Lee, Ralph E., 1921-2010
Civil, Architectural and Environmental Engineering
M.S. in Civil Engineering
Missouri School of Mines and Metallurgy
© 1962 Jerry Roger Bayless, All rights reserved.
Thesis - Open Access
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Bayless, Jerry R., "Investigation of flow rates through a rockfill dam with an internal spillway" (1962). Masters Theses. 2704.