Определяне на характеристиките и кривите на обезпеченост на оттока към створове с нарушен режим
Д. Мандаджиев. Определяне на характеристиките и кривите на обезпеченост на оттока към створове с нарушен режим
D. Mandadjiev. Determination of run-off characteristics and security curves in the places with voilated regime
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DETERMINATION OF RUN-OFF CHARACTERISTICS AND SECURITY CURVES IN THE PLACES WITH VIOLATED REGIME
D. Mandadjiev
(Summary)
The river run-off in certain places can be illustrated by the following formula:
[Q(t): tET=][S(t): tET] [X1(t). Х2(t)... X1(t): tET]
where X1(t) indicates the run-off meteorological factors (input) and S(t) the structure of the transforming ‘river basin’ system. If all conditions undergo changes as a result of human activities, S(t) will also be modified, i. e. a dynamic system is available. The characteristics of Q(t) for different S(t) are known as violated run-off regime. To determine S(t) is difficult. That is why it is reasonable to introduce the so-called structure of hydro-economic system S1(t) and then Q(t) should be presented as a function of its components and the registered run-off:
[Q (t): tET]-[S1(t ): tET] [Q1(t). Q2(t)...Q1(t): tET].
Two variants are possible in the course of establishing the run-off characteristics: a) when there are observation for a quite long period with a constant b) when such observations are missing. The first case necessitates to apply conventional methods for run-off analysis while the second one needs two ways of action: when we have in mind the theoretical low of run-off distribution and when we are not familiar with it.
The method’s precision depends on the accuracy in defining the components of hydro-economic system and registered run-off.
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