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KR-20260064489-A - SYSTEM AND METHOD FOR CONSTRUCTING WATERSHED DETAILING NETWORK

KR20260064489AKR 20260064489 AKR20260064489 AKR 20260064489AKR-20260064489-A

Abstract

A watershed downscaling network construction system according to one embodiment of the present invention may include: a river network generation unit that derives flow directions and river networks within a watershed using a digital elevation model; a watershed downscaling unit that performs watershed downscaling reflecting hydrological characteristics using a hydrostreamer algorithm; and a watershed downscaling network construction unit that constructs a network of a water account model using downscaled watershed information.

Inventors

  • 권현한

Assignees

  • 세종대학교산학협력단

Dates

Publication Date
20260507
Application Date
20250805
Priority Date
20241031

Claims (16)

  1. A river network generation unit that derives flow directions and river networks within a watershed using a digital elevation model; A basin downscaling unit that performs basin downscaling reflecting hydrological characteristics using a hydrostreamer algorithm; and A basin downsizing network construction unit that constructs a water account model network using downsizing basin information; A basin downsizing network construction system characterized by including
  2. In paragraph 1, The above river network generation unit is, A DEM data input unit that analyzes the topography within a watershed by inputting data from a digital elevation model; Flow direction analysis unit that determines the direction of water flow at each point within the basin; A river network derivation unit that derives a river network using flow accumulation data and forms basic watershed boundaries; and A basin detailing network construction system characterized by including a topographic data correction unit that identifies naturally occurring depressions and modifies topographic data.
  3. In paragraph 2, A watershed downsizing network construction system characterized by the above-mentioned flow direction analysis unit determining the direction of water flow using topographic analysis with a digital elevation model.
  4. In paragraph 2, The above basin detailing unit, A basin classification unit that classifies basins by reflecting hydrological characteristics; A data combining unit that combines hydrological data and topographic data to distinguish basin boundaries; and A basin downsizing network construction system characterized by including an interpolation execution unit that performs basin downsizing by applying interpolation.
  5. In paragraph 4, The above-mentioned basin detailing network construction unit is, A network component that constructs a network of water account models based on detailed basin boundaries; A network optimization unit that optimizes the basin network according to the scenario; and A watershed downscaling network construction system characterized by including a water cycle analysis unit that analyzes the water cycle process using a GIS-based visualization tool.
  6. In paragraph 5, The above network construction unit is, A basin downsizing network construction system characterized by constructing a network of links and nodes by considering interactions between basins, water flow paths, or major runoff points, and constructing the network using information on artificial water circulation facilities that affect water flow.
  7. In paragraph 1, The above basin detailing unit, A basin classification unit that classifies basins by reflecting hydrological characteristics; A data combining unit that combines hydrological data and topographic data to distinguish basin boundaries; and A basin downsizing network construction system characterized by including an interpolation execution unit that performs basin downsizing by applying interpolation.
  8. In paragraph 1, The above-mentioned basin detailing network construction unit is, A network component that constructs a network of water account models based on detailed basin boundaries; A network optimization unit that optimizes the basin network according to the scenario; and A watershed downscaling network construction system characterized by including a water cycle analysis unit that analyzes the water cycle process using a GIS-based visualization tool.
  9. In paragraph 8, The above-mentioned basin detailing network construction unit is, A watershed downsizing network construction system characterized by including a water quality and pollutant behavior analysis processing unit that predicts the movement and diffusion of pollutants based on water cycle process analysis tools provided by the water cycle analysis unit and removes or reduces pollutants by operating a pollutant treatment facility.
  10. In Paragraph 9, The above-mentioned water quality and pollutant behavior analysis processing unit is, During flood seasons or when water flow is high, physical treatment facilities are used to remove or treat pollutants, and A watershed downscaling network construction system characterized by removing or treating pollutants using chemical treatment facilities during drought periods or when water flow is low.
  11. In Paragraph 10, The above-mentioned water quality and pollutant behavior analysis processing unit is, During the flood season or when flow is high, segment-specific flow velocity and suspended solids concentration data calculated from the aforementioned basin detailing network construction unit are collected in real time, and peak flow velocity and suspended solids load before and after the entry of flood tides are predicted to pre-set operational parameters for each pollutant treatment facility, and If the flow rate exceeds the standard value, adjust the spacing of the intake screens of the screens and sedimentation facilities, and A basin downsizing network construction system characterized by utilizing downsizing flow rate during high-flow inflow to temporarily store water in a flow control facility to absorb peak load, and distributing the stored water to filtration facilities and flotation separation facilities according to capacity ratios.
  12. In Paragraph 10, The above-mentioned water quality and pollutant behavior analysis processing unit is, During a drought or when the flow rate is low, the concentration data of pollutants received from the water cycle analysis unit is monitored, and if the concentration exceeds a preset threshold, the amount of polyaluminum chloride (PAC) or aluminum sulfate to be added for the coagulation or condensation of pollutants is calculated. If the pH change exceeds a critical threshold during the coagulation or condensation process of pollutants, the neutralization facility is activated, and A watershed downscaling network construction system characterized by adding and injecting hydrogen peroxide to promote acidification and decomposition when the concentration of total organic carbon, phenols, or organochlorine substances is high.
  13. In a method for constructing a basin downsizing network using a basin downsizing network construction system according to any one of paragraphs 1 to 12, Step of inputting DEM data and analyzing the terrain; Step of analyzing the direction of water flow; Step of deriving the river network; Step to modify terrain data; A stage of classifying basins by reflecting hydrological characteristics; Step of detailing the watershed; Step of constructing a network of water account models; and Network optimization step; A method for constructing a basin downscaling network characterized by including
  14. A computer-readable recording medium storing a program for implementing the method for constructing a basin downsizing network pursuant to Paragraph 13.
  15. A computer program stored on a computer-readable recording medium for implementing the method for constructing a basin downsizing network pursuant to Paragraph 13.
  16. A method for constructing a watershed downscaling network characterized by analyzing digital elevation model (DEM) data using the TauDEM algorithm, deriving flow directions and stream networks within the watershed, and performing watershed downscaling reflecting hydrological characteristics using the hydrostreamer algorithm.

Description

System and Method for Constructing Watershed Detailing Network The present invention relates to a system and method for constructing a watershed downsizing network, and more specifically, provides a system and method for constructing a watershed downsizing network that classifies a watershed in detail based on a digital elevation model and constructs a water account network based thereon. This invention is the result of a project carried out with funding from the Ministry of Environment and supported by the Korea Environmental Industry & Technology Institute's Drought Response Water Management Innovation Technology Development Project (Project No.: 2480000378). A watershed refers to the surrounding area where water collects and flows into a river during rainfall, and is also referred to as a catchment area. Watersheds serve as the basis for flood analysis, dam construction planning, and the analysis of the behavior of water pollutants. According to conventional technology for calculating watershed boundaries based on a Digital Elevation Model (DEM), if a user designates an arbitrary outlet point considering the purpose or location of the analysis, the watershed boundary for the designated outlet point is calculated by analyzing the flow direction for each grid cell in the DEM raster file. As such, existing watershed analysis methods primarily use simple Digital Elevation Models (DEMs) to calculate valleys and ridges to define watersheds; however, they fail to adequately reflect hydrological characteristics such as the direction of river flow, making precise analysis difficult, and they have limitations in constructing water account networks because they do not incorporate actual river flow information. Furthermore, existing watershed analysis methods have limitations in constructing accurate water account networks because it is difficult to conduct detailed watershed analysis considering hydrological characteristics. The applicant has proposed the present invention to solve the above-mentioned problems. FIG. 1 is a diagram exemplarily showing the configuration of a watershed detailing network construction system according to one embodiment of the present invention. Figure 2 is a diagram exemplarily showing the detailed configuration of the river network generation unit of the system according to Figure 1. Figure 3 is a diagram illustrating a river network generation unit according to Figure 2. Figure 4 is a diagram exemplarily showing the detailed configuration of the basin detailing section of the system according to Figure 1. Figure 5 is a diagram for comparing input data of the basin detailing section according to Figure 4 with input data according to the prior art. Figure 6 is a drawing for explaining the basin detailing section according to Figure 4. Figure 7 is a diagram exemplarily showing the detailed configuration of the network construction unit of the system according to Figure 1. Figure 8 is a diagram exemplarily showing the detailed configuration of the water quality and pollutant behavior analysis processing unit among the basin detailing network construction units according to Figure 7. FIG. 9 is a diagram exemplarily showing a water system network created by the network construction unit according to FIG. 7. FIG. 10 is a flowchart illustrating a method for constructing a watershed detailing network according to one embodiment of the present invention. Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Identical or similar components are assigned identical or similar reference numerals, and redundant descriptions thereof will be omitted. The suffix "bu" for components used in the following description is assigned or used interchangeably solely for the ease of drafting the specification and does not inherently possess a distinct meaning or role. Furthermore, in describing embodiments disclosed in this specification, if it is determined that a detailed description of related prior art could obscure the essence of the embodiments disclosed in this specification, such detailed description will be omitted. Additionally, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification; the technical concept disclosed in this specification is not limited by the attached drawings, and it should be understood that they include all modifications, equivalents, and substitutions that fall within the spirit and technical scope of the present invention. Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. When it is stated that a component is "connected" to another component, it should be understood that it may be directly connected to that other component, or that there may be other compo