| Full text | |
| Author(s): |
Canno Ferreira Fais, Laura Maria
;
Borri Genovez, Ana Ines
;
Zhang, CK
;
Tang, HW
Total Authors: 4
|
| Document type: | Journal article |
| Source: | ADVANCES IN WATER RESOURCES AND HYDRAULIC ENGINEERING, VOLS 1-6; v. N/A, p. 3-pg., 2009-01-01. |
| Abstract | |
Dam spillways are the structures that lead rightly and safely the outflow downstream, so that the dam integrity can be guaranteed. Many accidents with dams have been caused by an inadequate spillway design or insufficient capacity. This situation is particularly important in embankment or rockfill dams, because the possibility of overtopping failure of the dam. The morning glory spillway may be used when there is not available space for a conventional spillway. Engineers use physical modeling to design this kind of structures, and therefore scale effects can cause a difference between model and prototype discharge rating curve. This paper has the objective of analyze the discharge flow rating curve in a vertical shaft with morning glory inlet and to correct scale effects for low heads. An experimental study has been carried out, using the spillway model of Paraitinga Dam in 1:51,02 scale. As a result equations are proposed in order to correct the discharge coefficient in the discharge rating curve for low heads. (AU) | |