A gate dam multi-target discharge estimation method and system

Abstract

The invention provides a sluice dam multi-target discharge estimation method and system, and the method comprises the steps: S10, building a sluice dam control basin hydrological model and determiningmodel parameters according to meteorological station length sequence observation data in the range of an upstream basin of a sluice dam and an actual measurement runoff sequence of a sluice dam entrystation; S20, determining the characteristic river length of the water supply range of the gate dam, and determining sub-basins involved in the water supply range by combining the confluence sequenceof the sub-basins; S30, determining various water supply targets of the gate dam, and determining the water storage and drainage amount corresponding to each water supply target of the gate dam; andS40, determining the total discharge capacity and the water storage capacity of the sluice dam under the specific scheduling rule. According to the method, the inflow rate and the water supply range of the gate dam are recognized, the dynamic water storage and drainage amount of the gate dam under the different targets of flood prevention, power generation, agriculture, industry, life and the likeis given, and technical support is provided for gate dam control drainage basin water circulation process simulation.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to a method and system for estimating multi-objective discharge of gates and dams suitable for hydrological models of river basins, and is mainly used for multi-objective discharge forecasting of gates and dams, simulation of hydrological process of river basins controlled by gates and dams, and the like. Background technique [0002] The construction and regulation of gates and dams play a pivotal role in flood control and drought relief, water storage and power generation, aquaculture, transportation and shipping, and leisure tourism in the river basin, which greatly promotes the development of regional economic society. At present, the construction of gates and dams has become a global phenomenon. More than 60% of the world's rivers are controlled by gates and dams, and it is estimated that this will reach 70% by 2025. China is the country with the largest n...

AI Technical Summary

Problems solved by technology

Existing methods can be roughly divided into: (1) Hydrological methods applicable to large-scale land surface models, mainly for the single regulation target of outflow regulation reservoirs, storage reservoirs, channel reservoirs, irrigated or non-irrigated reservoirs (flood control, water supply, irrigation, etc.) to carry out regulation and calculation, usually a monthly or annual scale model; (2) the hydrological method applicable to the watershed model, often using the water level-discharge relationship curve of the gate dam, the storage capacity-discharge relationship curve, etc., Or directly use the measured discharge data. This method requires detailed dispatching rule data. It is a comprehensive dispatching method, which cannot distinguish the discharge process under different dispatching objectives, and is limited to specific reservoirs with detailed data; (3) Applicable to river channel models The hydrodynamic method is mainly solved by the Saint-Venant equation, which requires detailed data such as the upstream and downstream water levels of the sluice and the opening degree of the sluice as boundary conditions and constraints.

Therefore, most of the above methods are limited to a single dispatch rule or a specific reservoir with detailed data, and there is still a lack of a universal multi-objective discharge estimation method for gates and dams

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