Hydrological Dimensioning and Operation of Reservoirs: - download pdf or read online


By Imre V. Nagy, Kofi Asante-Duah, Istvan Zsuffa (auth.)

ISBN-10: 9048159423

ISBN-13: 9789048159420

ISBN-10: 9401598940

ISBN-13: 9789401598941

Storage reservoirs symbolize some of the most potent instruments for getting rid of, or at the very least for minimizing, discrepancies within the time and area adaptations of water assets distribution and necessities. in truth, the various - frequently contradictory - and lengthening calls for on water assets usage and keep watch over often might be fulfilled simply by means of construction multi-purpose reservoir platforms. during this approach, the to be had water assets might be exploited and/or controlled in a extra rational method. commonly, the development of a dam throughout a river valley motives water to acquire in a reservoir at the back of the dam; the amount of water accrued within the reservoir will rely, partially, at the dimensions of the dam. the dimensions of the dam will mostly have an effect on the capital expenditure in a really major approach. certainly the development of enormous water source keep an eye on structures - resembling dams - often includes really large manpower and fabric outlays. hence, the elaboration of powerful tools of technique that may be utilized in developing the optimum reservoir parameters is of serious functional importance. for example, within the layout and operation oflarge multi-reservoir structures, basic simulation and/or optimization versions which may establish almost certainly expenseĀ­ potent and effective procedure layout are hugely fascinating. however it might be well-known that the matter of discovering optimum capacities for multi-reservoir platforms frequently turns into computationally advanced as a result huge variety of possible configurations that sometimes must be analyzed.

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The emptying time for the uncontrolled storage is measured by the interval between the point of intersection of the I and Qu hydrographs, and the point where the recession limbs coincide. Associated with the higher efficiency of controlled storages is some reduction in the overall safety, since gates may fail to open. Hence, an ungated emergency spillway is usually included in controlled storage schemes. Klemes (1973) elaborates a graphical design procedure for the estimation of the controlled storage volume for a given return period and discharge rate, Qd.

When the flood cannot be regulated to prevent all damages, 42 HYDROLOGICAL DIMENSIONING AND OPERATION OF RESERVOIRS timely flood warning can result in substantial lessening of the flood damages, and may indeed prevent loss of life. To determine the optimal capacity of a reservoir from the point of view of flood control, the inflow data for the worst flood year, selected from the historical inflow data of a specified duration, would typically be utilized in the ensuing analysis. ) In the design of flood control reservoirs, it is usually assumed that the period between floods is long enough for the reservoir to be emptied before the arrival of the next flood.

Can be defined by routing a series of floods through the upstream reservoir that has various flood storage capacities, Kf , and a known operating policy to the downstream potential damage site. , 1977). The flood hydrograph or peak discharge that is ultimately adopted as the basis for design of the structure is called the design flood; the selection of the appropriate design flood does indeed require a hydro-economics analysis of the problem. Flood Control by Multipurpose Reservoir Systems For the preliminary estimation of flood storage capacities in multi-reservoir systems, and that also involves several potential damage sites, a single design flood can be selected.

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Hydrological Dimensioning and Operation of Reservoirs: Practical Design Concepts and Principles by Imre V. Nagy, Kofi Asante-Duah, Istvan Zsuffa (auth.)

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