Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Different-scale hierarchical nested simulation method for urban rainfall and flood process

A technology of urban rainfall and simulation methods, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems that cannot meet the timeliness and accuracy of flood control and emergency response work at the same time, and improve timeliness and accuracy Effect

Active Publication Date: 2021-08-03
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the flood simulation technology represented by these models is relatively mature, it can basically only achieve a single goal, and cannot meet the timeliness and accuracy of flood control and emergency response work at the same time.

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Different-scale hierarchical nested simulation method for urban rainfall and flood process
  • Different-scale hierarchical nested simulation method for urban rainfall and flood process
  • Different-scale hierarchical nested simulation method for urban rainfall and flood process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] like figure 1 As shown, step 100 is executed to draw the surface control line, and draw the control line along at least one of the surface water guiding and water retaining facilities among building outlines, street edges, fences, and river embankments according to the high-resolution image.

[0039] Execute step 110, sort out the pipe network data, and divide drainage zones. like figure 2 As shown, step 111 is executed, starting from each water outlet, tracing upstream continuously, and delineating the service scope of the water outlet. Execute step 112, comprehensively consider the surface control line, and finally delineate drainage partitions, and the generated drainage partitions occupy the entire research area and do not overlap each other. Step 113 is executed to establish a one-to-one correspondence between the water outlet and the water drainage area.

[0040] Execute step 120, generate a non-structure body-fitted grid according to the surface control line,...

Embodiment 2

[0047] The present invention proposes a different-scale hierarchical nested simulation method for the urban rainfall and flood process, which can effectively solve the problem of urban-scale flood analysis between "macro" and "local", "refinement requirements" and "computational efficiency" contradiction.

[0048] A hierarchical and nested simulation method of different scales for urban rainfall and flood process, the specific technical scheme is as follows.

[0049] A hierarchical and nested simulation method of different scales for urban rainfall and flood processes, comprising the following steps:

[0050] Step 1: Draw surface control lines. The specific content includes: drawing control lines along the building outlines, street edges, fences, river embankments and other surface water diversion and water retaining facilities based on high-resolution images.

[0051] Step 2: Sorting out the pipe network data, starting from each outfall, tracing upstream continuously, and d...

Embodiment 3

[0059] like Figure 4 As shown, a different-scale hierarchical nested simulation method of urban rainfall and flood process, including:

[0060] The first step: draw the surface control line;

[0061] The second step: extract the drainage partition;

[0062] Step 3: Generate the surface grid (including multiple layers) according to the control line;

[0063] Step 4: Construct the hydrodynamic model of the river network and the hydrodynamic model of the pipe network;

[0064] Step 5: Select the surface grid in the drainage area, and build a 3-level model;

[0065] Step 6: Aggregate the grids of areas other than roads within the scope of each drainage division to form a new hydrological division and build a 2-level model;

[0066] Step 7: Drainage partition is the basic calculation unit, and a level 1 model is constructed;

[0067] Step 8: Carry out simulation analysis for a rainfall event, and start the level 1, level 2 and level 3 models in sequence.

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

No PUM Login to View More

Abstract

The invention provides a different-scale hierarchical nested simulation method for an urban rainfall and flood process. The method comprises the following steps: drawing earth surface water retaining and guiding control lines; by taking a pipe network drainage port as a basic unit, extracting drainage subareas; constructing a surface hydrology-river network hydrodynamic model based on the drainage subareas; constructing a surface hydrology (not including roads)-pavement hydrodynamic force-river network hydrodynamic force-pipe network hydrodynamic force coupled model; constructing a surface hydrodynamic-river network hydrodynamic-pipe network hydrodynamic model based on grids; according to a spatial position, establishing a coupling relationship among different-scale calculation units (i.e., grids, surface partitions except roads and drainage subareas), and performing hierarchical nested simulation of different scales. Compared with the prior art, the method can effectively solve the contradiction between 'macroscopic' and 'local' as well as 'refined demand' and 'calculation efficiency' in the urban scale flood analysis problem, and has important significance for improving the timeliness and accuracy of flood prevention emergency disposal work.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to a different-scale hierarchical nesting simulation method for urban rainfall and flood processes. Background technique [0002] In recent years, urban rainfall and flood disasters have occurred frequently, seriously threatening the normal production and life of urban residents and the safety of life and property. The problem of urban flood disasters has promoted the continuous development of urban stormwater management technology, especially the higher requirements for urban stormwater models in terms of depiction accuracy and calculation efficiency. [0003] However, for the simulation of urban rainfall and floods, the description accuracy and calculation efficiency are often a pair of contradictions. Due to the connectivity of urban river and lake water systems, the complexity and interaction of drainage systems, the hydrological response range of rainfall...

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
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/28G06F30/18G06F113/08G06F119/14
CPCG06F30/18G06F30/28G06F2113/08G06F2119/14
Inventor 郜银梁郑敬伟刘云华李敏刘业森臧文斌徐美张红萍胡昌伟刘媛媛李匡郝晓丽任汉承吴必朗柴福鑫刘舒
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com