Self-adaptive flood-drought mutual aid system and method for riverway in arid region based on terrain remodeling

By constructing an adaptive flood and drought relief system in arid river channels, and utilizing gravity sediment discharge, geometric evaporation suppression, and threshold scheduling mechanisms, the problems of insufficient sediment discharge power, large evaporation loss, and difficulty in utilizing flood and drought resources in arid river channels during the dry season have been solved, achieving efficient, low-cost, and environmentally friendly integrated management of river water resources.

CN122082384APending Publication Date: 2026-05-26XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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Patent Information

Application Number
CN202610518646.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-20
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In arid regions, rivers lack sufficient sediment discharge capacity during the dry season, water resources suffer severe evaporation losses, and flood and drought resources are difficult to utilize in a coordinated manner. Traditional management methods cannot adapt to flow fluctuations, resulting in low resource utilization efficiency.

Method used

By setting up water-sediment differentiation topographic units, narrow-depth evaporation suppression topographic units, outer floodplain floodplains, and threshold overflow topographic units in the river channel, and combining gravity sediment discharge, geometric evaporation suppression, and threshold scheduling mechanisms, an adaptive flood and drought mutual assistance system is constructed to achieve comprehensive management of water-sediment separation, clean water transport, sediment discharge, and flood scheduling.

Benefits of technology

It efficiently removes sediment and reduces evaporation loss during the dry season, and provides ecological replenishment during the flood season. This solves the technical bottleneck in water resource utilization in arid river channels and achieves efficient, low-cost and environmentally friendly comprehensive utilization of resources.

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Abstract

The invention discloses a self-adaptive flood-drought mutual aid system and method for a river channel in an arid region based on terrain remodeling, and belongs to the technical field of ecological water conservancy projects. The system comprises a water and sediment separation topographic unit, a threshold value overflow topographic unit, a narrow and deep evaporation restraining topographic unit and an outer side beach overflowing flood area which are sequentially arranged in the water flow direction and coupled. A bottom plate of the water-sediment separation shape unit is provided with a transverse slope inclining towards an outer side concave bank, and bottom layer sediment is guided by gravity to be conveyed to the outer side; the narrow-deep evaporation-inhibiting terrain unit adopts a narrow-deep compound section with a large depth-to-width ratio to collect clear water so as to inhibit evaporation; and the top of the threshold overflow terrain unit forms a physical threshold for flood and drought switching. The invention further discloses a corresponding implementation method. According to the system, by remodeling the geometric shape of a riverbed, self-adaptive switching between clear water returning, efficient sand discharging and evaporation restraining in the dry season and muddy water beach overflowing, ecological supply and automatic dredging in the flood season is achieved, and the problems of water-sand contradiction and ecological water use of wandering rivers in the arid region are effectively solved.
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