A sub-basin division method for distributed hydrological model considering multiple elements
A distributed hydrology and sub-basin technology, applied in 3D modeling, instruments, design optimization/simulation, etc., to achieve the effect of automatic program processing
Active Publication Date: 2020-11-24
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The object of the present invention is to provide a kind of sub-basin division method of the distributed hydrological model that considers multi-element, thus solve the foregoing problems existing in the prior art
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0046]In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.
[0047] Such as figure 1 As shown, the embodiment of the present invention provides a method for sub-basin division of a distributed hydrological model considering multiple factors, including the following steps:
[0048] First, according to the scope of the study area, a DEM slightly larger than the scope of the study area was collected and cut out, and the hydrological analysis module in the Gis software was used to calculate the flow direction of each grid with the D8 algorithm, and the cumulative number of confluence of each grid was calculated according to the flow direction. Take a simulated ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a distributed hydrological model sub-basin division method considering multiple elements, and relates to the technical field of distributed hydrological model calculation unitdivision application, and the method comprises the following steps: calculating the flow direction and the confluence accumulation number of each grid of a basin to be divided; setting a pseudo riverreach length threshold value and deleting; setting a single-point segmentation position of sub-basin division; encoding the large-area water body and carrying out boundary modification; performing traceability retrieval on the simulated river network grids, and performing encoding at the same time; taking each simulated river network grid as a starting point, performing traceability traversal on the non-simulated river network grids according to the grid flow direction, and setting the land surface codes of all the non-river network grids converged into the current simulated river network gridas the river network codes of the simulated river network grids; and generating a sub-basin upstream and downstream topological relation table. The single-point segmentation requirements in the sub-basin division process can be comprehensively considered, and reservoir and lake water surfaces are automatically processed and divided into the same sub-basin.
Description
technical field [0001] The invention relates to the technical field of division and application of distributed hydrological model calculation units, in particular to a sub-basin division method of a distributed hydrological model considering multiple factors. Background technique [0002] Distributed hydrological model is an effective means to explore and understand the process and mechanism of complex hydrological cycle, and it is also an effective tool to solve many practical hydrological problems. In the simulation of large watersheds, the sub-watershed division method can ensure a certain simulation accuracy and shorten the model running time. The degree of sub-basin division determines the accuracy of model simulation. Conventional sub-basin division mainly relies on the bifurcation of natural water systems to divide the areas flowing into the same river section into a unified sub-basin. This often leads to the large area of individual sub-watersheds, and when simul...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F30/18G06F16/29G06T17/05
CPCG06F16/29G06T17/05
Inventor 刘佳嘉周祖昊严子奇桑学锋牛存稳杜军凯龚家国刘琳贾仰文王浩
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES