By Ladislav Votruba
This booklet introduces equipment for fixing the technical and fiscal difficulties posed by way of water reservoirs, with a view to determine they've got the absolute best financial and social impact. the importance of reservoirs and the advance in their functionality in water administration is classed, and they're categorized in accordance with beginning and putting. one of the tools for fixing the reservoir's functionality, either graphical and numerical methods are defined, according to the likelihood thought and mathematical facts. within the clarification of the availability functionality of the reservoirs, consciousness is paid to the processing of hydrological information, the respective likelihood distribution is classified, the idea of stochastic techniques is defined, and techniques of modelling the series of suggest annual and per thirty days discharges are pointed out. The calls for of customers and the reliability of water offer are analysed. every kind of reservoir discharge keep watch over are provided, i.e. multi-year, annual, momentary and repayment. an answer is given for the release regulate in reservoir structures and in detailed instances of water administration, in addition to in person reservoirs.
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Example text
The trend of research was outlined in the resolution adopted at the Symposium on the Methods of Flow Control through Reservoirs, held at the Technical University in Prague in 1974 (BroZa, 1975). Solution of the storoqe function o f ~ s e r u n b s I nwmgement of s wir W m 1 determinotion of the Efive stomge mpocrty I onoij4iml methods ! reser- I I diqitol- gmphim methods in synthetic methods -mnogement system Fig. 3 Methods for analysis of the reservoir storage function. Research into the conservation function of a reservoir should also consider the role of the respective reservoirs in the water-management systems (see Chapter 15).
16 shows the function of reservoirs with various cycle durations in terms of inflow, outflow and water level fluctuation curves. a) over -yeor b) within-year e ) occasional w i t h d r a w l 0 T t i f c ) weekly d ) doily Fig. J 6 Schematic representation of reservoir function with different cycles The cycle of' the reservoirs is a time interval in a recurring sequence of operations during which the storage volume is filled and the accumulated water used, the space again being completely (or partly) emptied.
The process of the fluctuation of the river runoff. The first primitive experiment to model hydrological series in this way was made *) The analytical method means that general probability characteristics of release, filling of the reservoir and other variables determiningthe regime of the given reservoir are constructed according to the general probability characteristics of the flow series and in accordance with the given rules of controlled outflow. This method does not study the respective realization of random processes.