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A Distributed Hebei Model Construction Method and Its Application

A distributed and model-based technology, applied in the field of distributed Hebei model construction, can solve the problem of uneven spatial distribution and achieve the effect of coupling and prolonging the forecast period

Active Publication Date: 2018-05-01
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

[0006] The present invention designs a distributed Hebei model construction method and its application, which solves the technical problem of changing the lumped Hebei model into a distributed hydrological model, taking into account the uneven spatial distribution of hydrological phenomena and elements, Realize the coupling with the atmospheric model and extend the forecast period

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  • A Distributed Hebei Model Construction Method and Its Application

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Embodiment Construction

[0027] Combine below figure 1 , the present invention is further described:

[0028] A distributed Hebei model, it comprises the following steps:

[0029] Step 1, watershed generalization;

[0030] Step 2. Taking the grid as the research unit and using the Hebei model to establish a runoff module;

[0031] Step 3. Establish a grid-by-grid distributed confluence module with the hysteresis algorithm and the Muskingum method.

[0032] The watershed generalization step in step 1 includes: grid water flow direction generalization, sub-watershed generalization, watershed water system generalization and watershed boundary generalization.

[0033] a. Generalization of the flow direction of the grid.

[0034] ①Fill the original digital elevation model data (DEM data);

[0035] DEM is the abbreviation of "Digital Elevation Model", which is a solid ground model that expresses the ground elevation in the form of a set of ordered numerical arrays. DEM data refers to various DEM produ...

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Abstract

The invention relates to a novel distributed Hebei model construction method and application thereof. The novel distributed Hebei model construction method comprises the following steps that firstly, drainage basin generalization is carried out; secondly, grids serve as study units, a Hebei model is used for establishing a grid runoff producing module; thirdly, a lag-and-route method and a Muskingum method are used for establishing grid-by-grid distributed confluence modules. The mature Hebei model is used for conducting grid runoff producing calculation, then, grid-by-grid confluence calculation is carried out, the situation that the space distribution of factors such as an underlying surface is uneven is fully considered in the model, the model can be coupled with an atmospheric mode, the forecast accuracy of storm flood is improved, the meeting period is prolonged, and the novel distributed Hebei model construction method has important significance for storm flood forecasting, a drainage basin water circulation mechanism, water resource planning, unified water resource management scheduling in the northern semiarid and semihumid regions in China.

Description

technical field [0001] The invention relates to a construction method of a distributed Hebei model and its application, more specifically a distributed hydrological system that effectively utilizes the Hebei model, uses the grid as the research unit to analyze runoff, and then performs grid-by-grid confluence calculations. Model. Background technique [0002] Hebei Province is one of the areas in my country that are jointly affected by climate change and human activities. In recent decades, climate warming and high development and utilization of water resources have caused the water cycle process in this area to seriously deviate from its natural evolution law, and the water cycle process has profoundly affected the water resource system, ecological environment system, and socioeconomic system in this area. . The impact of climate change is mainly manifested in changes in atmospheric circulation, causing changes in the temporal and spatial distribution, intensity, and tota...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06T17/05G06Q50/06G06Q10/04G08B21/10
CPCG06F30/20G06Q10/04G06Q50/06G06T17/05G08B21/10Y02A10/40Y02A50/00Y02A90/10
Inventor 刘佳李传哲田济扬聂汉江于福亮穆文彬邱庆泰范玲雪
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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