Date

2022-9-02

Author

Khoram, Mohammad Khalid

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Spillways are the safety structures of dams against floods. Various types of spillways having different hydraulic characteristics can be considered with variable geometric dimensions. On the other hand, hydrologic reservoir routing is an important tool in the optimization of dam reservoir operations for the purpose of water supply for various needs and electricity production in hydropower plants. Some spillways have gates to control and regulate the flow and to store an optimal amount of water. Other spillways are designed for uncontrolled flow conditions which release excess water spontaneously when the reservoir level is above the spillway crest elevation. In this study, a Gated Ogee Crested spillway is operated to imitate the discharge behavior of Piano Key Weir which functions in uncontrolled flow conditions. This process helps in performing smoother gate operations and keeping water at pre-specified levels in the reservoir. At the end, three scenarios of gate operations are discussed and an empirical formula based on reservoir water level is developed that can serve for hydrologic reservoir routing to assist in automating gate operation. In this way, gates can be opened and closed on time in case of flash floods without knowing the incoming flood hydrograph. At the end of the reservoir routing process, water in the reservoir can automatically be fixed at a pre-defined level.

Subject Keywords

Spillways, PKW, Ogee Crested, Gate Operations

URI

https://hdl.handle.net/11511/98785

Collections

Graduate School of Natural and Applied Sciences, Thesis