A system for efficiently utilizing rainfall and flood resources on sea islands

Abstract

A system for efficiently utilizing rainfall and flood resources on sea islands include such steps as: (1) evaluating rainfall and flood resources on sea islands: establishing an open integrated watercirculation simulation system on sea islands by adopting a numerical model of distributed hydrological model combined with regulation simulation, and evaluating the amount of rainfall and flood resources on sea island; (2) rainfall and flood runoff hysteresis of islands: according to the geomorphic types and functional zoning of islands, dividing the islands into urban areas, rural areas and smallwatersheds; (3) storage of rainwater and flood resources on islands: establishing a storage technology system of rainwater and flood resources, which is composed of surface reservoir, underground water storage space utilization and freshwater storage reservoir in river and sea mouths which are connected and communicate with each other; (4) establishing the island-wide rainwater resource dispatching and utilization system based on the different quality utilization: according to the different sources of rainwater resources, the different collecting areas and routes, and the different water quality, constructing an integrated sea island rainfall and flood resource dispatching and utilizing system by the different ways of hysteresis and collection, storage in different areas, and quality-based utilization. The invention is convenient to realize the efficient utilization of the rainwater resources on the island.

Description

technical field [0001] The invention relates to a high-efficiency utilization system of stormwater resources in sea islands. Background technique [0002] The island areas generally have the characteristics of low mountains and short sources, concentrated precipitation, poor water interception conditions, and small reservoir capacity. Most of the precipitation is not utilized and is injected into the ocean in the form of floods. Therefore, the water resources in island areas are generally poor, which has become the main restrictive factor for the development of island resources and economic development. [0003] The development and utilization of rain and flood resources are mainly through the development methods of water blocking, water connection and water purification. But there are following disadvantages: [0004] 1. There is a lack of scientific assessment methods for the resource status and loss status of island stormwater resources: island areas are often areas whe...

AI Technical Summary

Problems solved by technology

[0004] 1. There is a lack of scientific assessment methods for the resource status and loss status of island stormwater resources: island areas are often areas lacking hydrological data, and their production and confluence are generally estimated empirically by traditional hydrological formulas, which are relatively extensive and narrow in scope

[0005] 2. The problem of short island runoff and rapid water loss into the sea has not been solved: the land area of ​​the island is limited, most of the landforms are plains, there are only a small number of mountains and hills, and many islands have short or even no rivers, and it is difficult to store rainfall runoff used, often lost in large quantities into the sea

Only by adopting rainwater delay collection technology in accordance with the different landforms and topographical characteristics of island areas can it be possible to delay the formation of runoff and increase the collection time

[0006] 3. The problem of small water resource storage capacity caused by island topography has not been fundamentally solved: limited by island topography, the storage capacity of surface reservoirs is generally not large. Surface storage is often limited

On the other hand, there are large seasonal, temporal and spatial differences in rainfall and floods on islands. The rainfall is mostly concentrated in the flood season, and when there is a typhoon and heavy rain, the rainfall is heavy. fundamentally solve the problem

[0007] 4. The improvement of the utilization efficiency of island stormwater resources lacks an overall technical system: the current utilization of island stormwater resources is mainly limited to a single technology, which can obtain a certain amount of rainwater resource utilization, and lacks overall control over the improvement of island stormwater resource utilization efficiency , and based on this goal, a system for efficient utilization of island stormwater resources is proposed that comprehensively considers the collection area, water quality, storage and utilization of stormwater resources

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