River network modeling method

Abstract

The invention discloses a river network modeling method which is used for analyzing and researching the river network by means of the complex network theory, and belongs to the technical field of hydrology. The modeling method abstracts the object river network into a directed network model and includes steps of defining evident changes of hydraulic characteristics of rivers in the object river network as nodes of the directed network model; defining riverways where river water flows through among the nodes as edges of the directed network model and defining flow direction of the river water as directions of the edges. The river network modeling method further quantitatively analyzes importance of the nodes and the edges in the river network according to the hydraulic characteristics such as the length of the riverways and runoff volume. Compared with existing normal hydrological models, the river network modeling method can well reflect real topological property of the river network and integrally analyzes and researches the real river network, importance of the nodes and the edges in the river network can be analyzed, and great significance in flood fighting, disaster relief, water resource protection and hydrological analysis and research and the like is achieved.

Description

technical field [0001] The invention relates to a modeling method of a river network, which uses complex network theory to analyze and study the river network, and belongs to the field of hydrology technology. Background technique [0002] In a complex and huge river basin, a large number of rivers, intersections, and hydraulic engineering facilities with certain hydraulic connections form a complex river network. When studying complex hydrological phenomena, it is possible to quantitatively study hydrological phenomena by establishing reasonable models. A hydrological model is a simplified description of a complex river system. At present, the commonly used hydrological models include lumped models and distributed models. However, both of these two models have certain deficiencies. For example, the lumped hydrological model ignores the spatiotemporal variability of hydrological processes, human activities, etc., and ignores the interaction between units, etc., and cannot ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the existing technologies, apply the complex network theory to the analysis and research of the river network, and provide a modeling method of the river network. The established hydrological model of the river network can truly and intuitively reflect the hydrological process The interaction between each unit in the system, and the structure is simpler and the calculation amount is smaller

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