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): t_ET=][S(t): t_ET] [X₁(t). Х₂(t)... X₁(t): t_ET]

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): t_ET]-[S₁(t ): t_ET] [Q₁(t). Q₂(t)...Q₁(t): t_ET].

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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