Khoram, Mohammad Khalid
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.


Seismic Performance Evaluation of Concrete Gravity Dams by Using Pseudo Dynamic Testing and Simulations
Aldemir, Alper; Binici, Barış (null; 2017-11-24)
Dams are one of the mostimportantinfrastructure components servingfor water storage and energyproduction.Experimental studies on the seismic response of concrete gravity dams are scarce due to the complications regarding thelargescaleof dams and their interaction with the reservoir. This study presents the results of recent novel pseudo-dynamic dam tests (PSD) along with the nonlinear finite element simulations of the specimens. The test specimens were 1/75 scaled version of the highest ...
Reliability assessment in detention basin design
Yanmaz, Ali Melih (1998-08-07)
A flood detention basin is one of the structural measures used for the mitigation of floods. Its design consists of determining the required flood storage and the dimensions of bottom outlet(s) and overflow spillway. Hydraulic performance of a detention basin is dictated with the achievement of the desired degree of attenuation which is affected by storage and capacities of outlet facilities. In this paper, a reliability based model is presented for the preliminary design of flood detention basins having du...
Contamination of the cement raw material in a quarry site by seawater intrusion, Darica-Turkey
Çamur, Mehmet Zeki (Springer Science and Business Media LLC, 2008-02-01)
The open pit mining nearby shoreline is planned to be extended into below sea level in order to use additional reserves of the cement raw material (marl). The raw material is currently contaminated by seawater intrusion below a depth of 20 m up to the distance of 90 m from shoreline. Seawater intrusion related contamination of the material used for the cement production was investigated by means of diffusion process for the future two below sea level mining scenarios covering 43 years of period. According t...
Experimental Investigation of Flow Conditions over Cambasi Dam Spillway
Altan Sakarya, Ayşe Burcu; Aydın, İsmail; Göğüş, Mustafa; Köken, Mete (2013-09-13)
The entrance conditions, flow around the piers and the pressure distributions along the centerline and the side of the spillway channel for different discharges were investigated for Cambasi dam that will be constructed at the intersection of Kabali and Hamzabey rivers in Ordu District. Hydraulic model of the spillway was constructed at a length scale of 1/20, based on the Froude similarity. Additionally, the water depths and the velocities through the channel sections at different locations were investigat...
Assessment of overtopping reliability and benefits of a flood detention dam
Yanmaz, Ali Melih (Canadian Science Publishing, 2008-10-01)
There is a growing tendency to assess safety levels of existing dams and to design new dams using probabilistic approaches according to project characteristics and site-specific conditions. This study is a probabilistic assessment of the overtopping reliability of a dam, which will be designed for flood detention purpose, and will compute the benefits that can be gained as a result of the implementation of this dam. In a case study, a bivariate flood frequency analysis was carried out using a five-parameter...
Citation Formats
M. K. Khoram, “AUTOMATION OF SPILLWAY GATE OPERATIONS BASED ON RESERVOIR WATER LEVEL MONITORING,” M.S. - Master of Science, Middle East Technical University, 2022.