CN107330617A - A kind of low influence development facility combination in sponge city and the determination method of layout - Google Patents
A kind of low influence development facility combination in sponge city and the determination method of layout Download PDFInfo
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Abstract
The invention discloses a kind of low influence development facility combination in sponge city and the determination method of layout, belong to municipal drainage technical field.This method is based on 01 plan models, scheme collection and cost effectiveness analysis, and integrated annual flow overall control rate is assessed and cost effectiveness is assessed, and it is concretely comprised the following steps：(1) 01 plan model；(2) combination is generated with placement scheme；(3) scheme is gathered；(4) program simulation is calculated with index；(5) option screening；(6) cost effectiveness analysis；(7) scheme is determined：According to cost effectiveness analysis, according to effect cost ratio, sort from high to low, according to ranking results, it is determined that intending the combination of low influence development facility and the placement scheme recommended.The method of the present invention can assess the annual flow overall control rate and cost of low influence development plan, determine low influence development facility combination and placement scheme, the low influence exploitation storm-water system planning and designing in auxiliary sponge city.
Description
Technical field
The invention belongs to municipal drainage technical field, more specifically to a kind of low influence development facility in sponge city
Combination and the determination method of layout.
Background technology
Under Global climate change and the background of urbanization, urban waterlogging frequently occurs.Urban waterlogging prevents and treats the weight of system
It is low influence exploitation (LID) storm-water system to want one of part.Low influence is opened in the low influence exploitation storm-water system in sponge city
Combination and the layout of facility are sent out, the performance to whole system plays most important.Because low influence development facility species is various, its
Combination is a problem and challenge with layout.Therefore, the optimization method of low influence development facility layout turns into many researchs at present
The study hotspot of person.
Such as, Xiao-Yue Zhen etc. combine non-dots using scatter search (scatter search algorithm)
Source contamination model (AnnAGNPS) is detained the pool to optimize layout rainwater.The use Multipurpose Optimal Method such as Guoshun Zhang ε-
The low influence development facility placement scheme of NSGAII combination Storm Water Management models (SWMM) screening.Yaoze Liu etc. use multi-level
Space optimization (MLSOPT) framework, AMALGAM optimized algorithms and the hydrology/water quality model (L-THIA-LID 2.1) optimum choice with
It is laid out low influence development facility.
But domestic method is mainly empirically at present, (is set by manually carrying out limited combination with layout in planning
In meter, generally combination and the quantity of layout design scheme is very limited), be then by modeling computation annual flow overall control rate
It is no up to standard, correct repeatedly, until meeting requirement (e.g., In Certain District of Shenzhen domain LID facility cloth of the such as Hu Aibing based on SWMM up to standard
Office and the Chinese water supply and drainages of optimization, 2015,31 (21):96-100).This method due to using artificial combination with layout, it is necessary to
Take considerable time, and assembled scheme is very limited, it is difficult to the good combination of effect and placement scheme are more comprehensively filtered out, together
The cost of this kind of method screening gained scheme of Shi Caiyong is not necessarily low, i.e., cost performance is not necessarily high.
Through retrieval, the patent report on the low influence development project of rainwater is existing related open.
Such as, Chinese patent 201510563320.2 discloses a kind of planning method and device of the low influence exploitation of rainwater, should
The planing method of application case includes：Obtain planning region each plot year rainfall runoff coefficient and the planning region footpath stream peak
Value；Planned stormwater facility as a factor of influence in the plot to the plot；Calculate the ground added after stormwater facility
Block year rainfall runoff coefficient and the planning region runoff peak value (weight setting module 31 be used for add stormwater facility after
Each factor of influence in plot assigns the element in a weight set respectively)；Judge the year rainfall runoff coefficient whether
In one preset range, the runoff peak value is judged whether in the second preset range, if being to be, is optimized using stormwater facility and calculated
The layout of stormwater facility in method optimization planning area, otherwise, is set using the rainwater in stormwater facility adjustment algorithm revised planning area
The layout applied.This application case realizes the modelling to adding the programme after stormwater facility, can be to the rainwater of planning region
Facility is planned, moreover it is possible to according to the runoff coefficient in plot and the runoff peak value of planning region, to the cloth of the stormwater facility of planning region
Office, which does, to be optimized and adjusts.But this application case comes with some shortcomings, such as exploitation right weight setting module adds the artificial subjectivity of scheme
Property, while not considering cost so that the scheme cost performance of acquisition is not necessarily high, it is possible to be not optimal case.
The content of the invention
1. the invention technical problem to be solved
For the above-mentioned problems in the prior art, the invention provides a kind of low influence development facility group in sponge city
The determination method with layout is closed, this method is based on one-zero programming model, scheme collection and cost effectiveness analysis, and integrated annual flow is total
Measure control rate to assess and cost effectiveness assessment, Comprehensive Assessment, phase are carried out on low influence development facility various combination and placement scheme
Tentative calculation can be avoided for existing method, scheme comparison is more comprehensive, the cost performance of final gained scheme is higher.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the present invention is provided is：
A kind of low influence development facility combination in sponge city of the present invention and the determination method of layout, this method are based on 0-1
Plan model, scheme collection and cost effectiveness analysis, integrated annual flow overall control rate is assessed and cost effectiveness is assessed, to low shadow
Ring development facility various combination and carry out Comprehensive Assessment with placement scheme, it is specific to determine that method is as follows：
Step 1: the structure of one-zero programming model：Control targe and low influence development facility are determined, according to the low of plan implementation
Development facility and sub- watershed are influenceed, one-zero programming model is built；
Step 2: combination is generated with placement scheme：Based on one-zero programming model, the different low influence development facility combinations of generation
With placement scheme；
Step 3: scheme is gathered：According to statistical method, carry out scheme collection；
Step 4: program simulation is calculated with index：For the scheme of collection, sewerage system model is called, to collection
Various combination simulated with placement scheme, according to model output report file, calculate the dependent evaluation for obtaining each scheme
Data；
Step 5: option screening：According to predetermined low influence exploitation annual flow overall control rate index, to not Tongfang
Case is screened, and meets the requirement of annual flow overall control rate；
Step 6: cost effectiveness analysis：For the scheme after screening, carry out cost effectiveness analysis, calculate effect cost ratio；
Step 7: scheme is determined：According to cost effectiveness analysis, by effect cost ratio, sort, tied according to sequence from high to low
Really, that is, the combination of low influence development facility and the placement scheme for intending recommending are determined.
Further, the construction method of one-zero programming model is as follows in the step one：
(1) according to conditions such as landform, with reference to Drainage Design specification, exploitation watershed will be intended and be divided into many sub- water catchment areas
Domain；
(2) determination of control targe and low influence development facility：Using it is low influence exploitation annual flow overall control rate index as
Control targe, according to《Sponge urban construction technical manual》Middle aged runoff volume control rate block plan determines that intending low influence exploitation converges
The annual flow overall control rate of aqua region；According to the feature (climate characteristic, soil-geological etc.) and the function of facility of watershed
Characteristic, intends the low influence development facility that selection is implemented：Biology is detained facility, Rain Garden, Green Roof, permeable pavement, grass planting
Ditch；
(3) basis《Sponge urban construction technical manual》, annual flow overall control rate is decomposed into sub- watershed plot
On, obtain the annual flow overall control rate and corresponding dependable rainfall in each plot；
(4) basis《Sponge urban construction technical manual》In on facility scale calculate content, using volumetric method or stream
Amount method calculates the area of every sub- various low influence development facilities of watershed；
(5) on various types of low influence development facility progress orders in whole watershed in each sub- watershed
Number (ID), ultimately form alternative low influence development facility ID set, low influence development facility total quantity is designated as N；
(6) combination of low influence development facility and layout：For each sub- watershed, each low influence exploitations of ID are set
Apply and only exist two kinds of possibility：Whether arrangement or not, so that one-zero programming model is formed, wherein 0 representative does not arrange that 1 represents cloth
Put.
Further, the specific method of combination and placement scheme generation is in the step 2：According to one-zero programming mould
The low influence development facilities of different ID on type, each sub- watershed, by arrangement or are not arranged, be combined, low influence is opened
The quantity of hair facility increases to N always from 1, so as to form different combination and placement scheme.
Further, the specific method of scheme collection is in the step 3：According to the quantity of low influence development facility
Increase to N always from 1 and carry out scheme collection, scheme collection total degree is N, and the scheme sample size wherein needed for single acquisition is pressed
Formula is calculated：
In formula, nRFor the scheme sample size of single acquisition；NSAll possible scheme sum during for single acquisition；P is successfully
Probability, be set to 0.5；CI is confidential interval, is set to ± 5%；ZαTo give the normal distribution value of confidence level.
Further, when the program simulation is calculated with index, model output report file is inputted comprising rainfall runoff
Output, sub- water catchment area, pipeline, node, low influence development facility attribute and result data information, the dependent evaluation data include
Annual flow overall control rate and cost.
Further, the method for cost effectiveness analysis is as follows in the step 6：The scheme that screening is obtained is carried out into
This effect analysis, according to annual flow overall control rate and cost, calculates effect cost ratio as follows：Effect cost ratio=year
Runoff volume control rate/cost.
3. beneficial effect
The technical scheme provided using the present invention, compared with prior art, with following remarkable result：
(1) a kind of low influence development facility combination in sponge city of the invention and the determination method of layout, this method are based on
One-zero programming model, scheme collection and cost effectiveness analysis, integrated annual flow overall control rate is assessed and cost effectiveness is assessed, right
The combination of the low influence development facility in sponge city is determined with layout, and scheme collection is based on confidence level, flexibly available, together
When consider effect cost ratio, acquired results scheme operational feasibility is bigger (relative to cost is not considered), so as to more
It is used to well instruct the low influence development facility combination in sponge city and the planning and designing of layout.
(2) a kind of low influence development facility combination in sponge city of the invention and the determination method of layout, its low influence are opened
Combination of facilities and layout are sent out, it is more more scientific and reasonable with being laid out than artificial combination using 0-1 model random combines；Because collection is big
Amount scheme, so on low influence development facility combination and the evaluation of placement scheme, so as to have than finite sample more fully
It is very limited that effect solves existing planning and design scheme quantity, low influence development facility artificial combination and layout optimization expend the time compared with
Long, less efficient the problem of.
Brief description of the drawings
A kind of low influence development facility combination in sponge city of Fig. 1 present invention and the determination method schematic diagram of layout；
6607 combinations and the annual flow overall control rate result of calculation of placement scheme in Fig. 2 embodiments 1.
Embodiment
A kind of low influence development facility combination in sponge city of the present invention and the determination method of layout, this method are based on 0-1
Plan model, scheme collection and cost effectiveness analysis, integrated annual flow overall control rate is assessed and cost effectiveness is assessed, to low shadow
Ring development facility various combination and carry out Comprehensive Assessment with placement scheme, with reference to Fig. 1, it specifically determines that step is as follows：
Step 1: the structure of one-zero programming model：Control targe and low influence development facility are determined, according to the low of plan implementation
Development facility and sub- watershed are influenceed, one-zero programming model is built, its specific construction method is as follows：
(1) according to conditions such as landform, with reference to Drainage Design specification, exploitation watershed will be intended and be divided into many sub- water catchment areas
Domain；
(2) determination of control targe and low influence development facility：Using it is low influence exploitation annual flow overall control rate index as
Control targe, according to《Sponge urban construction technical manual》Middle aged runoff volume control rate block plan determines that intending low influence exploitation converges
The annual flow overall control rate of aqua region；According to the feature (climate characteristic, soil-geological etc.) and the function of facility of watershed
Characteristic, intends the low influence development facility that selection is implemented：Biology is detained facility, Rain Garden, Green Roof, permeable pavement, grass planting
Ditch；
(3) basis《Sponge urban construction technical manual》, annual flow overall control rate is decomposed into sub- watershed plot
On, obtain the annual flow overall control rate and corresponding dependable rainfall in each plot；
(4) basis《Sponge urban construction technical manual》In on facility scale calculate content, using volumetric method or stream
Amount method calculates the area of every sub- various low influence development facilities of watershed；For example, selected water-storage depth, according to guide and right
The dependable rainfall answered, calculates the area that each plot biology is detained needed for facility, Rain Garden；Selected Green Roof rate, thoroughly
Water is mated formation rate, Green Roof, area of permeable pavement etc. needed for calculating each plot；
(5) on various types of low influence development facility progress orders in whole watershed in each sub- watershed
Number (ID), ultimately form alternative low influence development facility ID set, low influence development facility total quantity is designated as N；
(6) combination of low influence development facility and layout：For each sub- watershed, each low influence exploitations of ID are set
Apply and only exist two kinds of possibility：Whether arrangement or not, so that one-zero programming model is formed, wherein 0 representative does not arrange that 1 represents cloth
Put.
Step 2: combination is generated with placement scheme：Based on one-zero programming model, the different low influence development facility combinations of generation
With placement scheme, its specific method is：According to one-zero programming model, the low influence exploitations of different ID on each sub- watershed are set
Apply, by arrangement or do not arrange, be combined, the quantity of low influence development facility increases to N always from 1, so as to form difference
Combination and placement scheme.
Step 3: scheme is gathered：
The different low influence development facility combination of magnanimity and placement scheme can be produced for one-zero programming model, after saving
The continuous simulation calculating time simultaneously improves efficiency, it is therefore necessary to carry out scheme collecting work.The present invention carries out according to statistical method
Scheme is gathered, and its specific method is：Quantity according to low influence development facility increases to N from 1 and carries out scheme collection, scheme always
Collection total degree is N, and the scheme sample size wherein needed for single acquisition is calculated as the following formula：
In formula, nRFor the scheme sample size of single acquisition；NSAll possible scheme sum during for single acquisition；P is successfully
Probability, be set to 0.5；CI is confidential interval, is set to ± 5%；ZαTo give normal distribution value (such as confidence level of confidence level
It is 1.645 when taking 90%, confidence level is 1.960 when taking 95%, 2.575) confidence level is when taking 99%.
Step 4: program simulation is calculated with index：For the scheme of collection, sewerage system model is called, is carried out not
Simulation with scheme is calculated, and obtains the dependent evaluation data messages such as annual flow overall control rate, cost, it is comprised the following steps that：
(1) according to the combination of collection and placement scheme, program, the input required for generation sewerage system model are write
File, is that program simulation is prepared with index calculating；
(2) program is write, sewerage system model is called, the automatic simulation for carrying out different schemes；
(3) rainfall runoff input and output, sub- water catchment area, pipeline, node, low shadow (are included according to model output report file
Ring development facility attribute and result data), program is write, annual flow overall control rate, the cost etc. of each scheme of acquisition is calculated
Dependent evaluation data.
Wherein, annual flow overall control rate, which is assessed, refers to utilize sewerage system model, in the case of continuous analog, meter
Calculate and assess different low influence development facility combinations and the annual flow overall control rate of placement scheme.Cost evaluation refers to low to difference
Total cost of development facility combination low influence development facility different from employed in placement scheme is influenceed to carry out calculating assessment.
Step 5: option screening：According to predetermined low influence exploitation annual flow overall control rate index, to including year
The different schemes of the relevant information such as runoff volume control rate and cost are screened, and meet the requirement of annual flow overall control rate；
Step 6: cost effectiveness analysis：Cost effectiveness analysis refers to influence development facility combination low on difference and layout side
Case carries out cost (cost) and effect (annual flow overall control rate) analysis, for the scheme after screening, carries out cost effectiveness point
Analysis, according to annual flow overall control rate and cost, calculates effect cost ratio as follows：Effect cost ratio=annual flow total amount
Control rate/cost；
Step 7: scheme is determined：According to cost effectiveness analysis, by effect cost ratio, sort, tied according to sequence from high to low
Really, that is, the combination of low influence development facility and the placement scheme for intending recommending are determined.
Main Basiss experience in the prior art can effectively solve the problem that using the method for the present invention, by manually opening low influence
The limited combination of facility progress and layout are sent out, is then corrected repeatedly, time-consuming, gained until meeting requirement presence up to standard
As a result the problem of feasibility is poor.The present invention is based on one-zero programming model, scheme collection and cost effectiveness analysis, integrated annual flow
Overall control rate is assessed and cost effectiveness is assessed, and influence development facility combination low on sponge city and the determination being laid out are more accurate
Really, efficiency high, and acquired results feasibility is larger, so as to be preferably applied to instruct the low influence development facility in sponge city
Combination and layout, it is ensured that efficient, the stable operation of sewerage system.
To further appreciate that present disclosure, in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1
The present embodiment, with reference to Fig. 1, using the inventive method, is developed using Chizhou City, Anhui Province as background on the low influence of certain plan
Watershed first carry out low influence development facility combination and the determination of placement scheme.
Step 1: building one-zero programming model
Watershed first in the present embodiment, total catchment area 30.56ha is divided into 7 sub- watersheds (S01-S07).
According to guide and annual flow overall control rate block plan, it is 80% to determine Chizhou City's annual flow overall control rate, according to
Chizhou City and the feature of watershed, select 3 kinds low influence development facility：Biology is detained facility, permeable pavement, Green Roof.
Decompose annual flow overall control 80% to 7 sub- watersheds of rate, it is considered to be respectively arranged in each plot this 3 kinds low
Influenceing development facility, (in the present embodiment, sub- watershed S01 and S02 is not built, therefore roofing area is 0, does not influence to calculate
As a result)；The area that each plot biology is detained needed for facility, permeable pavement, Green Roof etc. is calculated respectively.In the present embodiment,
Permeable pavement rate takes 90%, and Green Roof rate takes 30%.
(wherein, ID serial numbers 1-21 is carried out to each intramassif biological facility, permeable pavement, Green Roof of being detained
1-3 is respectively that biological facility, permeable pavement, the ID of Green Roof of being detained in sub- watershed S01 is numbered, by that analogy), shape
Into low influence development facility ID set (total N=21).
For each sub- watershed, each low influence development facilities of ID only exist two kinds of possibility：Arrangement or not cloth
Put, so as to form one-zero programming model (0 representative does not arrange that 1 represents arrangement).
Step 2: combination is generated with placement scheme
According to one-zero programming model, the low influence development facilities of different ID on each sub- watershed, by arrangement or not cloth
Put, be combined, low influence development facility quantity increases to 21 from 1 respectively, so that different combination and placement scheme are formed, side
Case total quantity is：It is individual.
Step 3: scheme is gathered
Efficiency is improved to save the simulation calculating time, carries out scheme collecting work.In the present embodiment, confidence level is set
95%, according to the scheme sample size formula of single sampling, it is 384 to calculate sample size, and acquisition order is according to low influence development facility
Quantity is respectively from 1 to 21, total frequency in sampling 21, altogether acquisition scheme 6607, i.e., 6607 combinations and placement scheme.
Step 4: program simulation is calculated with index
By the program of establishment, by sewerage system model (using SWMM models in the present embodiment), to 6607
Various combination is carried out with placement scheme simulates, and calculates and obtains the dependent evaluation data such as annual flow overall control rate, cost.Wherein,
The annual flow overall control rate result of calculation of 6607 schemes, as shown in Figure 2.
Step 5: option screening
Annual flow overall control rate index 80% is developed according to the low influence of determination, 6607 schemes are screened, it is full
Sufficient annual flow overall control rate >=80%, obtains 1474 combinations and placement scheme, (by length is limited, only arranges as shown in table 1
Go out above 10 schemes).
Step 6: cost effectiveness analysis
To the scheme after screening, cost effectiveness analysis is carried out, (effect cost ratio=annual flow is total than formula by effect cost
Measure control rate/cost) calculate effect cost ratio.
The option screening result of table 1
Step 7: scheme is determined
According to cost effectiveness analysis, sorted according to effect cost than from high to low, as a result as shown in table 2 (by length institute
Limit, only lists TOP10).According to ranking results, it is determined that intending the combination of low influence development facility and the placement scheme recommended.
In the present embodiment, the influence development facility combination lower than first 3 of effect cost is respectively with placement scheme：Numbering 1549
Scheme " 2,5,8,14,17,18 ", the scheme of numbering 1928 " 2,5,7,8,11,14,20 " and the scheme of numbering 2897 " 5,6,8,11,
12,13,15,17,20”。
The schemes ranking result (TOP10) of table 2
It is pointed out that in the present invention scheme determination, except based on annual flow overall control rate, the analysis of prices,
Other indexs can be combined to be determined, such as waterlogging volume, waterlogging last, rainwater utilization amount, pollutant index.
Claims (6)
1. a kind of low influence development facility combination in sponge city and the determination method of layout, it is characterised in that this method is based on 0-1
Plan model, scheme collection and cost effectiveness analysis, integrated annual flow overall control rate is assessed and cost effectiveness is assessed, to low shadow
Ring development facility various combination and carry out Comprehensive Assessment with placement scheme, it is specific to determine that method is as follows：
Step 1: the structure of one-zero programming model：Control targe and low influence development facility are determined, according to the low influence for intending implementing
Development facility and sub- watershed, build one-zero programming model；
Step 2: combination is generated with placement scheme：Based on one-zero programming model, the different low influence development facility combinations of generation and cloth
Office's scheme；
Step 3: scheme is gathered：According to statistical method, carry out scheme collection；
Step 4: program simulation is calculated with index：For the scheme of collection, sewerage system model is called, to collection not
Simulated with combination with placement scheme, according to model output report file, calculate the dependent evaluation data for obtaining each scheme；
Step 5: option screening：According to predetermined low influence exploitation annual flow overall control rate index, different schemes are entered
Row screening, meets the requirement of annual flow overall control rate；
Step 6: cost effectiveness analysis：For the scheme after screening, carry out cost effectiveness analysis, calculate effect cost ratio；
Step 7: scheme is determined：According to cost effectiveness analysis, by effect cost ratio, sort from high to low, according to ranking results,
Determine the combination of low influence development facility and the placement scheme for intending recommending.
2. the low influence development facility combination in a kind of sponge city according to claim 1 and the determination method of layout, it is special
Levy and be, the construction method of one-zero programming model is as follows in the step one：
(1) with reference to Drainage Design specification, exploitation watershed will be intended and be divided into many sub- watersheds；
(2) determination of control targe and low influence development facility：Using low influence exploitation annual flow overall control rate index as control
Target, according to《Sponge urban construction technical manual》Middle aged runoff volume control rate block plan determines to intend low influence exploitation water catchment area
The annual flow overall control rate in domain；According to the feature of watershed and the functional characteristic of facility, the low influence for intending selection implementation is opened
Send out facility：Biology is detained facility, Rain Garden, Green Roof, permeable pavement, grass planting ditch；
(3) basis《Sponge urban construction technical manual》, annual flow overall control rate is decomposed on sub- watershed plot, obtained
To the annual flow overall control rate and corresponding dependable rainfall in each plot；
(4) basis《Sponge urban construction technical manual》In on facility scale calculate content, using volumetric method or discharge method
Calculate the area of every sub- various low influence development facilities of watershed；
(5) serial number is carried out on various types of low influence development facilities in whole watershed in each sub- watershed
(ID) alternative low influence development facility ID set, is ultimately formed, low influence development facility total quantity is designated as N；
(6) combination of low influence development facility and layout：For each sub- watershed, each low influence development facilities of ID are only
In the presence of two kinds of possibility：Whether arrangement or not, so as to form one-zero programming model, wherein 0 representative is not arranged, 1 represents arrangement.
3. the low influence development facility combination in a kind of sponge city according to claim 2 and the determination method of layout, it is special
Levy and be, the specific method that combination is generated with placement scheme in the step 2 is：According to one-zero programming model, each sub- charge for remittance
The low influence development facilities of different ID on region, by arrangement or do not arrange, be combined, it is low influence development facility quantity from
1 increases to N always, so as to form different combination and placement scheme.
4. the low influence development facility combination in a kind of sponge city according to claim 3 and the determination method of layout, it is special
Levy and be, the specific method that scheme is gathered in the step 3 is：Quantity according to low influence development facility increases to always from 1
N carries out scheme collection, and scheme collection total degree is N, and the scheme sample size wherein needed for single acquisition is calculated as the following formula：
<mrow>
<msub>
<mi>n</mi>
<mi>R</mi>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<msub>
<mi>N</mi>
<mi>S</mi>
</msub>
<mo>&CenterDot;</mo>
<mi>p</mi>
<mo>&CenterDot;</mo>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<mi>p</mi>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<mo>(</mo>
<msub>
<mi>N</mi>
<mi>S</mi>
</msub>
<mo>-</mo>
<mn>1</mn>
<mo>)</mo>
<mo>&CenterDot;</mo>
<msup>
<mrow>
<mo>(</mo>
<mfrac>
<mrow>
<mi>C</mi>
<mi>I</mi>
</mrow>
<msub>
<mi>Z</mi>
<mi>&alpha;</mi>
</msub>
</mfrac>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
<mo>+</mo>
<mi>p</mi>
<mo>&CenterDot;</mo>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<mi>p</mi>
<mo>)</mo>
</mrow>
</mfrac>
</mrow>
In formula, nRFor the scheme sample size of single acquisition；NSAll possible scheme sum during for single acquisition；P is successfully general
Rate, is set to 0.5；CI is confidential interval, is set to ± 5%；ZαTo give the normal distribution value of confidence level.
5. a kind of low influence development facility combination in sponge city and the determination side of layout according to claim any one of 1-4
Method, it is characterised in that：When the program simulation and index are calculated, model output report file comprising rainfall runoff input and output,
Sub- water catchment area, pipeline, node, low influence development facility attribute and result data information, the dependent evaluation data include year footpath
Flow overall control rate and cost.
6. the low influence development facility combination in a kind of sponge city according to claim 5 and the determination method of layout, it is special
Levy and be, the method for cost effectiveness analysis is as follows in the step 6：Cost effectiveness analysis, root are carried out to the scheme that screening is obtained
According to annual flow overall control rate and cost, effect cost ratio is calculated as follows：Effect cost ratio=annual flow overall control
Rate/cost.
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| CN111754032A (en) * | 2020-06-10 | 2020-10-09 | 哈尔滨工业大学 | Sponge facility layout optimization method and device, computer equipment and storage medium |
| CN111754032B (en) * | 2020-06-10 | 2022-07-26 | 哈尔滨工业大学 | Sponge facility layout optimization method and device, computer equipment and storage medium |
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