Зависимость комплексной гарантированной водоотдачи от регулирующего объема водохранилища

Abstract

The purpose of the study is to generalize the methodology for solving one of the common engineering problems solved in the development of basin schemes and water management projects, assessment of the parameters of reservoirs of complex purpose. The article analyzes the methodology of construction and practical use ofthe dependence of the complex reservoir guaranteed output onthecalculated hydrological characteristics, the reservoir usable storageand water resourcesprovision for requirements coverage. The role of reservoirs for the development of the integrated use schemesand reservoir water resources using rules to solve the most important water management problems is shown. The engineering and mathematical statement of the problem is formulated. The representativeness of long-term hydrological series by their duration is analyzed, when the relative errors of parameters are put in accordance with the serieslength. It is shown that consideration of the in-series connection (coeffi cient of autocorrelation) and an increase in changeability by 30% leadto the increase in the minimum required duration by several times. On the example of specifi c water objects, the Tsimlyanskiy hydroelectric complex and the cascade of reservoirs of the upper Tobol, the practical application of the generalized method and simulation modeling of the long-term water balance is considered. A variant of water supply scheme to the defi cient areas of Donbass with the involvement of the Severskiy Donets resources for their long-term regulation in the Krasnopavlovsky reservoir (currently not used as a regulating capacity) is presented. Based on the analyzing dependence «capacity-yield», an assessment of additional guaranteed water resources was obtained. With regard to the transboundary section line on the Tobol River, the assessment of the real water yield was obtained by simulation modeling according to the authors’ methodology. The expediency of using simulation and optimization modeling is discussed. The relevance of the topic is noted in connection with the cross-sections topologyand the reservoirsregulating capacity that have been changing for decades. It is rec ommended to discuss the raised issues at conferences and in publications.