CN106156949A - A kind of rainwater based on waterlogging risk assessment is low affects development project method - Google Patents
A kind of rainwater based on waterlogging risk assessment is low affects development project method Download PDFInfo
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Abstract
The invention discloses that a kind of rainwater based on waterlogging risk assessment is low affects development project method, comprise the steps: the waterlogging risk of S1: rapid evaluation planning region；S2: determine the priority utility function equation of planning region according to region hydrological characteristics, underlying surface character, available space, urban planning scheme, mining inetesity specification and the waterlogging risk of planning region, determine the low impact exploitation cloth setting priority of planning region, and then the suitability laying low impact is ranked up and passes judgment on；S3: develop priority level according to described low impact and planning region is divided into some blocks of cells, the general objective that planning region runoff coefficient controls is assigned to each described blocks of cells, until the total runoff coefficient determined is adjusted in the weighting of each unit block meets the general objective that planning region runoff coefficient controls；S4: draw planning region runoff coefficient and control space layout figure, provide decision support for low impact development project.
Description
Technical field
The present invention relates to Planning of rainwater project technical field, particularly relate to a kind of low shadow of rainwater based on waterlogging risk assessment
Ring development project method.
Background technology
At present, both at home and abroad low impact exploitation is controlled to target and has different regulations, mainly comprise to annual flow total amount,
Quantum of rainfall and the control etc. of comprehensive runoff coefficient.About the low development project method that affects of rainwater, Chinese patent literary composition
201510563320.2 planning method and devices disclosing rainwater low impact exploitation, it is mainly by adding rain to planning region
Water arrange with change plot year rainfall runoff coefficient and planning region in runoff peak value to realize, rainwater is low affects development project,
Its process is loaded down with trivial details and spends substantial amounts of cost and manpower and materials, and planning region is not carried out any block lay planning and
Risk assessment.
And lack the measures, i.e. planning process such as planning region is carried out block laying planning and risk assessment and do not have or less ginseng
Examine the indexs of correlation such as study area land character, hydrologic condition, mining inetesity specification, land surface condition and waterlogging space risk, from
And lack the description on low impact exploitation stormwater facility cloth setting priority, implementation process easily causes " urban agglomeration plan, group
Lay " unchecked construction problem, cause inefficiency or the wasting of resources.
Summary of the invention
The technical problem to be solved in the present invention is the region hydrology in order to overcome the city reality that has no basis in prior art
The indexs such as condition, underlying surface character, available space, mining inetesity specification and waterlogging space risk lay low impact exploitation rain
The planning problem of drainage facility, improves the unchecked construction problem easily causing " urban agglomeration plan, group lay " in implementation process, for
LID in city scope implements offer and effectively lays guidance.
A kind of rainwater based on waterlogging risk assessment is low affects development project method, comprises the steps:
The waterlogging risk of S1: rapid evaluation planning region；
S2: strong according to the region hydrological characteristics of planning region, underlying surface character, available space, urban planning scheme, exploitation
Metric model and waterlogging risk determine the priority utility function equation of planning region, determine that the low impact exploitation of planning region is laid preferential
Level, and then the suitability of low impact laying is ranked up and passes judgment on；
S3: planning region is divided into some blocks of cells, by planning region runoff system according to described low impact exploitation priority level
The general objective of numerical control is assigned to each described blocks of cells, until the weighting of each unit block is adjusted the total runoff coefficient determined and met
The general objective that planning region runoff coefficient controls；
S4: draw planning region runoff coefficient and control space layout figure, provide decision support for low impact development project.
Preferably, step S1 includes:
S11, employing grid hydrology modeling, by GIS-Geographic Information System operating platform, use lattice structure and vector quantization
Data, the earth's surface that digital elevation model carries out planning region flows to analyze and basin identification；
S12, in GIS-Geographic Information System, use the hydrological characteristics of the method simulation planning region of simplification, thus to planning region
Waterlogging Flood inducing factors carries out risk analysis；
S13, the primary GIS-Geographic Information System of employing or electronic map data carry out vulnerability to the main supporting body of planning region
Grade analysis；
S14, combine described risk analysis and described vulnerability class and analyze dual indexes, carry out space exposure analysis,
Calculate the waterlogging risk rating scheme of planning region, identify planning region effectiveness factors area serious, that easily send out, complete rapid evaluation planning
The waterlogging risk in district.
Preferably, in step S4, also including the functional and Con trolling index according to different described low impact exploitations, it is right to complete
Planning region is embodied as planning and the setting of measure.
Preferably, or two during described hydrological characteristics includes the low-lying easy flood point of footpath circulation flow path, city；Described electronics
It is one or more that map datum includes in land-use style, land used grade and land used spatial distribution；Described supporting body includes resident
One or more in district, public building, industrial occupancy, means of transportation and shopping centre.
Compared with prior art, the invention has the beneficial effects as follows: the planning side that the present invention analyzes based on waterlogging risk indicator
Case is intended to improve the low impact in city and lays science and the effectiveness of planning, controls catalogue with low impact exploitation and is designated as foundation, combines
Closing multiple affects attribute, completes to lay low impact exploitation the evaluation of relative importance value, reaches to give top priority to what is the most important, the principle for the treatment of in accordance with local conditions,
Make urban planning more reasonable, thus save municipal investment.
Accompanying drawing explanation
Fig. 1 is the second embodiment of the invention low stream affecting development project method of a kind of rainwater based on waterlogging risk assessment
Cheng Tu.
Fig. 2 is second embodiment of the invention planning region Flood inducing factors danger and the input data of supporting body vulnerability and comments
Estimate result figure.
Fig. 3 is waterlogging risk class and the signal of present situation waterlogging point calculating acquisition in second embodiment of the invention planning region
Figure.
Fig. 4 a is that second embodiment of the invention is in comprehensive consideration waterlogging risk indicator, existing land-use style, available space
And on the basis of urban planning, according to footpath flow control general objective and the runoff coefficient index of different planned land use, in Ge Zi district
The low impact suggestion controlling value schematic diagram that block is assigned.
Fig. 4 b be second embodiment of the invention on the basis of proposed projects, in the park green land allocation plan of planning region
In, for dissimilar park green lands such as Comprehensive Park, park belonging to a category, Community Parks, Rain Garden, vegetation grass ditch, stagnant is proposed
Stay the construction suggestion schematic diagram of the pool, delaying basin.
Detailed description of the invention
Technical scheme is further illustrated below in conjunction with specific embodiment.
A kind of rainwater based on waterlogging risk assessment is low affects development project method, comprises the steps:
The waterlogging risk of S1: rapid evaluation planning region；
S2: strong according to the region hydrological characteristics of planning region, underlying surface character, available space, urban planning scheme, exploitation
Metric model and waterlogging risk determine the priority utility function equation of planning region, determine that the low impact exploitation of planning region is laid preferential
Level, and then the suitability of low impact laying is ranked up and passes judgment on；
S3: planning region is divided into some blocks of cells, by planning region runoff system according to described low impact exploitation priority level
The general objective of numerical control is assigned to each described blocks of cells, until the weighting of each unit block is adjusted the total runoff coefficient determined and met
The general objective that planning region runoff coefficient controls；
S4: draw planning region runoff coefficient and control space layout figure, provide decision support for low impact development project.
Preferably, step S1 includes:
S11, employing grid hydrology modeling, by GIS-Geographic Information System operating platform, use lattice structure and vector quantization
Data, the earth's surface that digital elevation model carries out planning region flows to analyze and basin identification；
S12, in GIS-Geographic Information System, use the hydrological characteristics of the method simulation planning region of simplification, thus to planning region
Waterlogging Flood inducing factors carries out risk analysis；
S13, the primary GIS-Geographic Information System of employing or electronic map data carry out vulnerability to the main supporting body of planning region
Grade analysis；
S14, combine described risk analysis and described vulnerability class and analyze dual indexes, carry out space exposure analysis,
Calculate the waterlogging risk rating scheme of planning region, identify planning region effectiveness factors area serious, that easily send out, complete rapid evaluation planning
The waterlogging risk in district.
Preferably, in step S4, also including the functional and Con trolling index according to different described low impact exploitations, it is right to complete
Planning region is embodied as planning and the setting of measure.
Preferably, or two during described hydrological characteristics includes the low-lying easy flood point of footpath circulation flow path, city；Described electronics
It is one or more that map datum includes in land-use style, land used grade and land used spatial distribution；Described supporting body includes resident
One or more in district, public building, industrial occupancy, means of transportation and shopping centre.
Technical solution of the present invention and principle comprise two main body modules: planning region waterlogging risk rapid evaluation module and low punching
Hit exploitation and lay priority assessment module.Waterlogging risk module Main Basis planning region digital elevation model and land used information,
Space based on GIS-Geographic Information System hydrological analysis and vulnerability analysis method, rapid evaluation is big chi under Severe rainstorm weather condition
The waterlogging risk in degree space；The waterlogging risk sky that priority assessment module draws is laid in low impact exploitation based on waterlogging risk module
Between characterize, consider the actual region hydrologic condition in city, underlying surface character, available space and urban planning scheme etc. many
Heavily lay condition, in conjunction with importance and the weight analysis of above-mentioned influence factor, set up based on the multiple priority effect affecting attribute
With functional equation, determine the relative importance value spatial description of planning region sub-block, pass judgment on for the suitability that low impact is laid
And sequence.The Con trolling index controlling target and different measure according to low exploitation describes, and the master control target of study area is carried out district
Block decomposes, and is finally completed region cloth setting priority and the segmentation of target sub-block controlled quentity controlled variable.
Embodiment one
A kind of rainwater based on waterlogging risk assessment is low affects development project method, comprises the steps:
The waterlogging risk of S1: rapid evaluation planning region.Particularly as follows: use the grid hydrology modeling rapid evaluation rule of GIS
The waterlogging risk of partition.
It concretely comprises the following steps:
1. by GIS operating platform, use lattice structure and vector quantization data, digital elevation model is carried out ground, planning region
Surface low is to analyzing and basin identification.
2. in GIS, the hydrological characteristics in the basin, method approximate simulation planning region of simplification is used, such as: footpath circulation flow path, city
The low-lying easy flood point in city etc., thus obtain the substantially description dangerous to waterlogging Flood inducing factors.
3. vulnerability assessment Main Basis primary GIS of planning region supporting body or electronic map data, such as: land-use style
With grade, spatial distribution etc., to main supporting body, such as: residential block, public building, industrial occupancy, means of transportation, shopping centre etc.
Carry out vulnerability class description.
Finally combine planning region danger and vulnerability dual indexes, carry out space exposure analysis, calculate the interior of planning region
Flood risk rating scheme, Study of recognition district effectiveness factors area serious, that easily send out.
S2: strong according to the region hydrological characteristics of planning region, underlying surface character, available space, urban planning scheme, exploitation
Metric model and waterlogging risk determine the priority utility function equation of planning region, determine that the low impact exploitation of planning region is laid preferential
Level, and then the suitability of low impact laying is ranked up and passes judgment on.
S3: planning region is divided into some blocks of cells, by planning region runoff system according to described low impact exploitation priority level
The general objective of numerical control is assigned to each described blocks of cells, until the weighting of each unit block is adjusted the total runoff coefficient determined and met
The general objective that planning region runoff coefficient controls；That is: on the basis of LID priority level spatial description, according to the land used of planning region
Character and mining inetesity specification, be assigned to constitute each unit block of planning region by the general objective that study area runoff coefficient controls,
Until the total runoff coefficient determined is adjusted in the weighting of each block meets the requirement of regulation.Specifically include following steps: (1) is according to planning
The indexs such as district's land-use projects character, mining inetesity, the corresponding runoff coefficient of forward and backward each sub-block and run-off thereof are developed in estimation
Difference.Wherein land-use projects character, mining inetesity are as decision variable parameter.(2) Runoff coefficient and the rule of planning region are obtained
The general objective that partition runoff coefficient controls, the master control amount of the required abatement in planning region is i.e. as the target letter of multi-objective genetic algorithm
Number.(3) Multipurpose Optimal Method constraints is that LID lays the flow comprehensive runoff coefficient target in Hou Gai district less than or equal to pre-
If value.(4) result of a relative optimization can be obtained by Multipurpose Optimal Method.
S4: draw planning region runoff coefficient and control space layout figure, provide decision support for low impact development project.With
Time, can complete planning region is embodied as the planning of measure according to the functional and Con trolling index of different low impact development stimulation
And setting.
Embodiment two
A kind of low development project method that affects of rainwater based on waterlogging risk assessment, uses the grid hydrology modeling of GIS
The waterlogging risk of rapid evaluation H planning region.This planning region Flood inducing factors is dangerous and the input data of supporting body vulnerability and commenting
Estimate result and see that Fig. 2, assessment result are by the danger of Flood inducing factors and the actual numerical value of supporting body vulnerability are carried out data
Standardization or normalized, thus obtain the division of five standardized scale.
1, calculate the waterlogging risk class obtained and see Fig. 3 a, for showing that the space of this high, medium and low risk area of district's waterlogging is divided
Cloth situation.It is higher by the probability of effectiveness factors and the most disaster-stricken for the high Regional Representative of waterlogging risk class, causes damage
The biggest.From risk map, the study area waterlogging risk in massif and water system region is minimum, and risk is concentrated mainly on physical features relatively
Smooth, the region (the inner ring labelling see in figure) of building comparatively dense.
2, by the comprehensive runoff coefficient goal decomposition of H planning region to each sub-block；Planning region is divided into 24 sub-block altogether,
From the angle of low impact exploitation rainwater comprehensive utilization, the land-use style of sub-block is divided into nine groups, the comprehensive footpath of each class
Stream coefficient is identical.The control target of rainfall runoff is by the master control amount according to the required abatement of planning, according to H planning region land-use projects
The index such as character, mining inetesity, the corresponding runoff coefficient (being specifically shown in table 1 below) of forward and backward each sub-block and footpath thereof are developed in estimation
Flow difference.The comprehensive runoff coefficient in H planning region development & construction stage is 0.7, and the application of LID is to propose for this development phase
, it is desirable to LID lays the flow comprehensive runoff coefficient target in Hou Gai district less than or equal to 0.55.
Table 1: the rainfall runoff coefficient that planning region different land use type is corresponding
4, low impact is laid needs to set, according to risk class, the priority that low impact exploitation stormwater facility is laid.Fig. 4 a exhibition
Show on the basis of comprehensive consideration waterlogging risk indicator, existing land-use style, available space and urban planning, according to footpath
Flow control general objective and the runoff coefficient index of different planned land use, in the low impact suggestion controlling value that each sub-block is assigned.
5, through statistical computation, after planningization low impact exploitation is laid, its comprehensive runoff coefficient reaches the desired value of 0.55, full
The low impact exploitation requirement of Zu Gai district.And it can be seen that the laying of LID substantially conforms to the space layout of waterlogging risk class, to runoff
Management with strong points, efficiency is high.Fig. 4 b shows on the basis of proposed projects, in the park green land allocation plan of study area
In, for dissimilar park green lands such as Comprehensive Park, park belonging to a category, Community Parks, Rain Garden, vegetation grass ditch, stagnant is proposed
Stay the construction suggestion of the pool, delaying basin.
For a person skilled in the art, can technical scheme as described above and design, make other each
Plant corresponding change and deformation, and all these changes and deforms the protection model that all should belong to the claims in the present invention
Within enclosing.
Claims (4)
1. a rainwater based on waterlogging risk assessment is low affects development project method, it is characterised in that: comprise the steps:
The waterlogging risk of S1: rapid evaluation planning region；
S2: according to the region hydrological characteristics of planning region, underlying surface character, available space, urban planning scheme, mining inetesity rule
Model and waterlogging risk determine the priority utility function equation of planning region, determine the low impact exploitation cloth setting priority of planning region,
And then the suitability of low impact laying is ranked up and passes judgment on；
S3: planning region is divided into some blocks of cells, by planning region runoff coefficient control according to described low impact exploitation priority level
The general objective of system is assigned to each described blocks of cells, until the weighting of each unit block is adjusted the total runoff coefficient determined and met planning
The general objective that district's runoff coefficient controls；
S4: draw planning region runoff coefficient and control space layout figure, provide decision support for low impact development project.
A kind of rainwater based on waterlogging risk assessment the most according to claim 1 is low affects development project method, its feature
It is: step S1 includes:
S11, employing grid hydrology modeling, by GIS-Geographic Information System operating platform, use lattice structure and vector quantization data,
The earth's surface that digital elevation model carries out planning region flows to analyze and basin identification；
S12, in GIS-Geographic Information System, use the hydrological characteristics of the method simulation planning region of simplification, thus the waterlogging to planning region
Flood inducing factors carries out risk analysis；
S13, the primary GIS-Geographic Information System of employing or electronic map data carry out vulnerability class to the main supporting body of planning region
Analyze；
S14, combine described risk analysis and described vulnerability class and analyze dual indexes, carry out space exposure analysis, calculate
The waterlogging risk rating scheme of planning region, identifies planning region effectiveness factors area serious, that easily send out, completes rapid evaluation planning region
Waterlogging risk.
A kind of rainwater based on waterlogging risk assessment the most according to claim 2 is low affects development project method, its feature
It is: in step S4, also includes the functional and Con trolling index according to different described low impact exploitations, complete planning region concrete
The planning of implementing measure and setting.
A kind of rainwater based on waterlogging risk assessment the most according to claim 2 is low affects development project method, its feature
It is: described hydrological characteristics includes or two in the low-lying easy flood point of footpath circulation flow path, city；Described electronic map data bag
Include in land-use style, land used grade and land used spatial distribution is one or more；Described supporting body includes residential block, public builds
Build, industrial occupancy, one or more in means of transportation and shopping centre.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107239910A (en) * | 2017-06-27 | 2017-10-10 | 中国科学院城市环境研究所 | The urban waterlogging risk assessment index for coupling population and POI points is built |
| CN108062631A (en) * | 2017-12-29 | 2018-05-22 | 广东工业大学 | Urban waterlogging methods of risk assessment, device and terminal |
| CN109886537A (en) * | 2019-01-09 | 2019-06-14 | 天津市市政工程设计研究院 | A kind of judgment method of the road waterlogging risk of town site expansion |
| CN110135722A (en) * | 2019-05-09 | 2019-08-16 | 苏州嘉奕晟中小企业科技咨询有限公司 | Smart city flood processing system based on geographical integrated information |
| CN110543660A (en) * | 2019-07-17 | 2019-12-06 | 广东工业大学 | low-impact development simulation method, system and related device |
| CN111275266A (en) * | 2020-02-25 | 2020-06-12 | 华南师范大学 | Rapid optimization method for spatial layout of impervious ground surface for urban rainstorm and waterlogging prevention and control |
-
2016
- 2016-06-30 CN CN201610513218.6A patent/CN106156949A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107239910A (en) * | 2017-06-27 | 2017-10-10 | 中国科学院城市环境研究所 | The urban waterlogging risk assessment index for coupling population and POI points is built |
| CN108062631A (en) * | 2017-12-29 | 2018-05-22 | 广东工业大学 | Urban waterlogging methods of risk assessment, device and terminal |
| CN109886537A (en) * | 2019-01-09 | 2019-06-14 | 天津市市政工程设计研究院 | A kind of judgment method of the road waterlogging risk of town site expansion |
| CN109886537B (en) * | 2019-01-09 | 2023-04-11 | 天津市政工程设计研究总院有限公司 | Method for judging road waterlogging risk of urban construction land expansion |
| CN110135722A (en) * | 2019-05-09 | 2019-08-16 | 苏州嘉奕晟中小企业科技咨询有限公司 | Smart city flood processing system based on geographical integrated information |
| CN110543660A (en) * | 2019-07-17 | 2019-12-06 | 广东工业大学 | low-impact development simulation method, system and related device |
| CN110543660B (en) * | 2019-07-17 | 2023-05-09 | 广东工业大学 | Low-impact development simulation method, system and related device |
| CN111275266A (en) * | 2020-02-25 | 2020-06-12 | 华南师范大学 | Rapid optimization method for spatial layout of impervious ground surface for urban rainstorm and waterlogging prevention and control |
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