|Welle, Paul - SCHNABEL ENGINEERING|
Submitted to: State Dam Safety Officials Association Proceedings
Publication Type: Proceedings
Publication Acceptance Date: June 1, 2003
Publication Date: September 10, 2003
Citation: Welle, P.I., Kadavy, K.C. 2003. Old models - new applications. In: Dam Safety 2003. Proceedings of the Association of State Dam Safety Officials, September 2003, Minneapolis, Minnesota. 2003 CDROM. Technical Abstract: Can an existing physical dam spillway hydraulics model be used in the design of a new spillway? A number of physical dam spillway hydraulics models have been developed at different hydraulics laboratories throughout the world. The results of these models contain valuable data that may be useful in the design of new dams or in the rehabilitation of existing dams. Schnabel Engineering is designing the Deep Creek Site 5D Dam in Yadkin County, North Carolina, for the USDA Natural Resources Conservation Service and Yadkin County. The proposed dam is an 85-foot high, 1700-foot long combination roller compacted concrete and earth fill dam for flood prevention and water supply. The auxiliary spillway being designed is a stepped spillway with an Ogee weir and a stilling basin. Original plans were to have a physical hydraulics model developed to assist in this design. In preparation for this modeling, the USDA Agricultural Research Service, Hydraulic Engineering Research Unit in Stillwater, Oklahoma, reviewed and summarized data from two previous physical models for the Cedar Run Site 6 (Fauquier County, Virginia) and Randleman (Raleigh, North Carolina) Dams. The data indicated that these two models, especially the Randleman Dam model, represented the Deep Creek Site 5D Dam well enough that an additional physical model study was not necessary; therefore, the results of these existing models were used in the design of a stepped spillway for the Deep Creek Site 5D Dam, including the Ogee weir, the spillway sidewalls, and the stilling basin. This paper also discusses recommendations of data to be collected and summarized for existing and future physical spillway models to increase the potential of their utilization in the design of other spillways.