CN108108892A - A kind of flooded evaluation unit division methods of urban storm product based on Thiessen polygon - Google Patents
A kind of flooded evaluation unit division methods of urban storm product based on Thiessen polygon Download PDFInfo
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- CN108108892A CN108108892A CN201711373571.XA CN201711373571A CN108108892A CN 108108892 A CN108108892 A CN 108108892A CN 201711373571 A CN201711373571 A CN 201711373571A CN 108108892 A CN108108892 A CN 108108892A
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Abstract
The invention discloses a kind of flooded evaluation unit division methods of urban storm product based on Thiessen polygon, this method determines that water (flow) direction extracts low-lying point by dem data, and combined screening is carried out to low-lying point using low-lying dot buffer zone；The center line in road and river is intercepted with regular grid, chooses the central point of every section of center line；Generalization pipeline data extracts the nodes such as true catch-basin and water outlet, Thiessen polygon will be established based on the nodes such as the low-lying point, road water system central point and the pipeline that extract above, so as to complete survey region evaluation unit classification.Compared to the method that traditional single utilization terrain data product of partition flood evaluation unit divides, this method has incorporated actual water system and road on the basis of terrain data and has collected effect to the flooded ponding of product, so as to which the flooded evaluation unit of the product of division is more bonded actual conditions.
Description
Technical field
Low-lying point is utilized the invention discloses a kind of, to establish Tyson more for node for road water system central point and inspection shaft etc.
The method of side shape realization regional evaluation dividing elements, is to belong to urban waterlogging monitoring and warning technology.
Background technology
The flooded situation of heavy rain product that urban rainfall runoff model simulates different rainfall intensities is built, is to carry out heavy rain product damage caused by waterlogging evil at present
The important technology method of risk assessment.Study area's inner evaluation dividing elements different modes can to the analog result of model generate compared with
It is big to influence.The method that division evaluation unit generally uses at present is using single dem data, and extraction water (flow) direction carries out the network of waterways
Classification, realizes the segmentation in basin.But this method only considers terrain data, for closeer in the artificial building in urban area
Irrationality is deposited in the case of collection.A kind of low-lying point of utilization is proposed, road water system central point and inspection shaft etc. are built for node
The method of vertical Thiessen polygon realization regional evaluation dividing elements.Thiessen polygon (Voronoi diagram) is by institute
There is adjacent discrete point to be linked to be triangle, make the perpendicular bisector on each side of these triangles, by hanging down for each three sides of a triangle
The polygon that the intersection point (the namely center of circle of circumscribed circle) of straight bisector connects.
The content of the invention
The purpose of the present invention is being directed to defect present in research at present, a kind of combination correlation orographic factor, rain are provided
Water pipe track data, water system road etc. establishes the evaluation unit division methods of Thiessen polygon.
The technical solution adopted by the present invention is：A kind of flooded evaluation unit division side of urban storm product based on Thiessen polygon
Method comprises the following steps：
(1) according to the dem data of acquisition, the data of water (flow) direction are calculated using D8 algorithms；
(2) depression extraction is carried out according to water (flow) direction data, and is converted to vector point data；
(3) the low-lying click-through row buffer of extraction is analyzed, while merges and overlap folded region, extract the point of combined region
Shape data achieve the purpose that the low-lying point of merger aggregation；
(4) road of extraction survey region and water-based center line and the regular grid for creating certain specification；
(5) split, intercept the center line in road and river with regular grid, choose the central point of every section of center line；
(6) inspection shaft of true pipeline data and water outlet are generalized as dotted data；
(7) Tyson is established for node according to low-lying point achieved above, road water system central point and inspection shaft water outlet
Polygon, it is achieved thereby that survey region evaluation unit classification.
Explanation：DEM is the abbreviation of digital elevation model, is a kind of form of Mapping departments' geographic information data；D8 algorithms
And water (flow) direction calculating, depression extraction, buffer zone analysis, regular grid creates, to establish Thiessen polygon be commercial GIS
The function algorithm that software is included is not belonging to the present patent application scope.
Advantageous effect：In the present invention, the use of Thiessen polygon, the ground that city ponding will can be had a major impact
The discrete points data that shape, storm sewer and road water system etc. extract is combined together, and is realized and is converged spy according to surface pond
Sign carries out the flooded evaluation unit division of product.
Description of the drawings
Fig. 1 is dem data schematic diagram of the embodiment of the present invention；
Fig. 2 is water (flow) direction schematic diagram of the embodiment of the present invention；
Fig. 3 is vector point data schematic diagram of the embodiment of the present invention；
Fig. 4 is that the embodiment of the present invention merges overlapping region schematic diagram；
Fig. 5 extracts dotted schematic diagram data for the embodiment of the present invention；
Fig. 6 is extraction road of the embodiment of the present invention and water system center line schematic diagram；
Fig. 7 is the Linear element central point schematic diagram after extraction segmentation of the embodiment of the present invention；
Fig. 8 is that inspection shaft and water outlet are generalized as dotted schematic diagram data by the embodiment of the present invention；
Fig. 9 is survey region evaluation unit classification schematic diagram of the embodiment of the present invention.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described：
The subregion in certain city is now chosen as embodiment：
A kind of flooded evaluation unit division methods of urban storm product based on Thiessen polygon, comprise the following steps：
(1) the results are shown in Figure 2 as shown in Figure 1, calculating the water (flow) direction on the ground using D8 algorithms for related dem data；
(2) depression extraction is carried out, and is converted to vector point data, the results are shown in Figure 3, it is apparent that depression is counted
Amount is excessive, it is necessary to be screened to it
(3) low-lying click-through row buffer is analyzed, merges the region of overlapping, such as Fig. 4, then extract the dotted number in the region
According to, achieve the purpose that merger aggregation low-lying point the results are shown in Figure 5；
(4) according to the range size of survey region, screening is repeated until the quantity of low-lying point meets survey region structure
The magnitude range of Thiessen polygon is at 0.1-1 square kilometres；
(5) road in the city and water-based center line are extracted, the rule of 800*800 are created with reference to the planning general layout in surrounding city
Then grid is split it, and the results are shown in Figure 6, while cuts out the Road that part is gone to be more than dem data scope, prevention unit
The irrationality of division.
(6) central point of the Linear element after extraction segmentation, after retaining main roads and water-based dotted data, as a result such as
Shown in Fig. 7；
(7) inspection shaft of true pipeline data and water outlet are generalized as dotted data, as shown in Figure 8；
(8) by low-lying point achieved above, road water system central point and inspection shaft water outlet etc. merge into a figure layer,
And Thiessen polygon is established, it is achieved thereby that survey region evaluation unit classification, the results are shown in Figure 9.
Certainly, representative instance simply of the invention more than, in addition, the present invention can also have other a variety of specific implementations
Mode, all technical solutions formed using equivalent substitution or equivalent transformation, is all fallen within the scope of protection of present invention.
Claims (1)
1. a kind of flooded evaluation unit division methods of urban storm product based on Thiessen polygon, it is characterised in that：Including following step
Suddenly：
（1）According to the dem data of acquisition, the data of water (flow) direction are calculated using D8 algorithms；
（2）Depression extraction is carried out according to water (flow) direction data, and is converted to vector point data；
（3）The low-lying click-through row buffer of extraction is analyzed, while merges and overlaps folded region, extracts the dotted number of combined region
According to, achieve the purpose that merger aggregation low-lying point；
（4）The road and water-based center line of extraction survey region and the regular grid for creating certain specification；
（5）Split, intercept the center line in road and river with regular grid, choose the central point of every section of center line；
（6）The inspection shaft of true pipeline data and water outlet are generalized as dotted data；
（7）According to low-lying point achieved above, it is polygon that road water system central point and inspection shaft water outlet for node establish Tyson
Shape, it is achieved thereby that survey region evaluation unit classification.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109933636A (en) * | 2019-03-08 | 2019-06-25 | 安徽理工大学 | A kind of ground water chemistry partition method based on Arcgis |
| CN110837925A (en) * | 2019-11-04 | 2020-02-25 | 浙江贵仁信息科技股份有限公司 | Urban waterlogging prediction method and device |
| CN111046551A (en) * | 2019-12-10 | 2020-04-21 | 河海大学 | Urban group drainage process simulation method |
| CN111951350A (en) * | 2020-07-20 | 2020-11-17 | 南京师范大学 | Automatic judging method for fargeplane level and height |
| CN112614206A (en) * | 2020-12-14 | 2021-04-06 | 中国城市规划设计研究院 | Road center line extraction method and device |
| CN113609683A (en) * | 2021-08-06 | 2021-11-05 | 北京工业大学 | Rainwater pipe net catchment area division method based on basin analysis and Thiessen polygon |
| CN113709006A (en) * | 2021-10-29 | 2021-11-26 | 上海闪马智能科技有限公司 | Flow determination method and device, storage medium and electronic device |
| CN113781648A (en) * | 2021-08-06 | 2021-12-10 | 清华大学建筑设计研究院有限公司 | Skeleton extraction and feature recognition method for building plane traffic space |
| CN114091756A (en) * | 2021-11-23 | 2022-02-25 | 国家海洋环境预报中心 | Township tsunami risk assessment method based on Thiessen polygon |
| CN114547922A (en) * | 2022-04-28 | 2022-05-27 | 南京信息工程大学 | Urban waterlogging analysis method and device based on polygonal mesh and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040082075A1 (en) * | 2002-10-25 | 2004-04-29 | Robert Powers | Multi-step NMR for the identification and evaluation of biomolecule-compound interactions |
| CN106708944A (en) * | 2016-11-23 | 2017-05-24 | 南京师范大学 | SWMM modeling-oriented and multi-element-considered method for automatically dividing sub-basins of city regions |
-
2017
- 2017-12-19 CN CN201711373571.XA patent/CN108108892A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040082075A1 (en) * | 2002-10-25 | 2004-04-29 | Robert Powers | Multi-step NMR for the identification and evaluation of biomolecule-compound interactions |
| CN106708944A (en) * | 2016-11-23 | 2017-05-24 | 南京师范大学 | SWMM modeling-oriented and multi-element-considered method for automatically dividing sub-basins of city regions |
Non-Patent Citations (1)
| Title |
|---|
| 薛丰昌等: "三维GIS的城市暴雨积涝灾害模拟", 《测绘科学》 * |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109933636A (en) * | 2019-03-08 | 2019-06-25 | 安徽理工大学 | A kind of ground water chemistry partition method based on Arcgis |
| CN110837925A (en) * | 2019-11-04 | 2020-02-25 | 浙江贵仁信息科技股份有限公司 | Urban waterlogging prediction method and device |
| CN110837925B (en) * | 2019-11-04 | 2023-09-15 | 浙江贵仁信息科技股份有限公司 | Urban waterlogging prediction method and device |
| CN111046551A (en) * | 2019-12-10 | 2020-04-21 | 河海大学 | Urban group drainage process simulation method |
| CN111046551B (en) * | 2019-12-10 | 2020-11-20 | 河海大学 | Urban group drainage process simulation method |
| CN111951350A (en) * | 2020-07-20 | 2020-11-17 | 南京师范大学 | Automatic judging method for fargeplane level and height |
| CN111951350B (en) * | 2020-07-20 | 2024-02-23 | 南京师范大学 | Automatic discrimination method for level number and height of plane |
| CN112614206B (en) * | 2020-12-14 | 2023-06-16 | 中国城市规划设计研究院 | Method and device for extracting road center line |
| CN112614206A (en) * | 2020-12-14 | 2021-04-06 | 中国城市规划设计研究院 | Road center line extraction method and device |
| CN113781648A (en) * | 2021-08-06 | 2021-12-10 | 清华大学建筑设计研究院有限公司 | Skeleton extraction and feature recognition method for building plane traffic space |
| CN113781648B (en) * | 2021-08-06 | 2023-05-26 | 清华大学建筑设计研究院有限公司 | Skeleton extraction and feature recognition method for building plane traffic space |
| CN113609683B (en) * | 2021-08-06 | 2024-02-06 | 北京工业大学 | Rainwater pipe network sub-catchment area dividing method based on basin analysis and Thiessen polygons |
| CN113609683A (en) * | 2021-08-06 | 2021-11-05 | 北京工业大学 | Rainwater pipe net catchment area division method based on basin analysis and Thiessen polygon |
| CN113709006A (en) * | 2021-10-29 | 2021-11-26 | 上海闪马智能科技有限公司 | Flow determination method and device, storage medium and electronic device |
| CN114091756A (en) * | 2021-11-23 | 2022-02-25 | 国家海洋环境预报中心 | Township tsunami risk assessment method based on Thiessen polygon |
| CN114547922A (en) * | 2022-04-28 | 2022-05-27 | 南京信息工程大学 | Urban waterlogging analysis method and device based on polygonal mesh and storage medium |
| CN114547922B (en) * | 2022-04-28 | 2022-07-29 | 南京信息工程大学 | Urban waterlogging analysis method and device based on polygonal mesh and storage medium |
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Application publication date: 20180601 |