OLD MODELS – NEW APPLICATIONS

摘要

Can an existing physical dam spillway hydraulics model be used in the design of a newrnspillway? A number of physical dam spillway hydraulics models have been developed at differentrnhydraulics laboratories throughout the world. The results of these models contain valuable datarnthat may be useful in the design of new dams or in the rehabilitation of existing dams.rnSchnabel Engineering is designing the Deep Creek Site 5D Dam in Yadkin County, NorthrnCarolina, for the USDA Natural Resources Conservation Service and Yadkin County. Thernproposed dam is an 85-foot high, 1700-foot long combination roller compacted concrete and earthrnfill dam for flood prevention and water supply. The auxiliary spillway being designed is a steppedrnspillway with an Ogee weir and a stilling basin. Original plans were to have a physical hydraulicsrnmodel developed to assist in this design.rnIn preparation for this modeling, the USDA Agricultural Research Service, HydraulicrnEngineering Research Unit in Stillwater, Oklahoma, reviewed and summarized data from twornprevious physical models for the Cedar Run Site 6 (Fauquier County, Virginia) and Randlemanrn(Raleigh, North Carolina) Dams. The data indicated that these two models, especially thernRandleman Dam model, represented the Deep Creek Site 5D Dam well enough that an additionalrnphysical model study was not necessary; therefore, the results of these existing models were usedrnin the design of a stepped spillway for the Deep Creek Site 5D Dam, including the Ogee weir, thernspillway sidewalls, and the stilling basin.rnThis paper also discusses recommendations of data to be collected and summarized forrnexisting and future physical spillway models to increase the potential of their utilization in therndesign of other spillways.