CN107391839A - A kind of airport single flight road orientation system of selection for reducing atmosphere environment impact - Google Patents
A kind of airport single flight road orientation system of selection for reducing atmosphere environment impact Download PDFInfo
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- CN107391839A CN107391839A CN201710590835.0A CN201710590835A CN107391839A CN 107391839 A CN107391839 A CN 107391839A CN 201710590835 A CN201710590835 A CN 201710590835A CN 107391839 A CN107391839 A CN 107391839A
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Abstract
The invention discloses a kind of airport single flight road orientation system of selection for reducing atmosphere environment impact, comprise the following steps：By predicting airport future flight and weather information data, airport single flight road orientation span is determined；The pollutant discharge amount in stage of taking off is calculated, pollutant includes NOx, SOx, CO, HC and PM；AERMOD model of atmospheric diffusion is established, causes the aerial craft pollution thing in assessment area to discharge to different runway orientation respectively and simulates, obtain the concentration of pollutant in assessment area；Influence of each scheme to atmospheric environment is quantified by pollutant diffusion area, and it is minimum as decision objective using area, and its corresponding runway orientation is to the minimum runway orientation scheme of atmosphere environment impact.Caused atmosphere environment impact when the present invention is by simulating single flight road different azimuth, construct to the minimum airport single flight road orientation system of selection of atmosphere environment impact, ambient atmosphere environment is influenceed with reducing to take off to discharge pollutants.
Description
Technical field
Present invention relates particularly to a kind of airport single flight road orientation system of selection for reducing atmosphere environment impact.
Background technology
Pollutant discharge amount of the aircraft when airfield runway takes off occupies institute's exhaust emission in all operation phase of ground
The larger proportion of thing total amount.And near airports are mostly open area, the transmission and diffusion of pollutant are promoted, thus to airport
The atmospheric environment on periphery (below 1000m) near the ground generates certain influence.And flight flow rises steadily, runway utilization rate
Be continuously increased will cause it is this negative effect it is further serious.Diffusion and wind direction due to pollutant is closely related, therefore is selecting
Runway orientation and the relation of pollutant diffusion need to be considered by taking during airfield runway orientation, so that more Rational choice runway orientation,
Atmospheric environment deteriorates caused by reduction is taken off, and ensures that neighbouring ecological environment is stable and human lives' health has important meaning
Justice.
At present, according to China《Civil airport overall planning specification MH5002-XXXX》Mainly entered with safe and efficient for principle
Row airfield runway plans, and at planning initial stage, considers influence of the runway orientation to environment though having, mainly to reduce takeoff and landing
Influence of the noise to airport periphery is the leading selection for carrying out runway orientation, have ignored different runway orientation to atmosphere environment impact
Difference.The reasonability that domestic and foreign scholars are mainly planned from the angle research runway of Runway operation efficiency, not concern are run
Road orientation is to the influence caused by atmospheric environment.
At present, newly-built airports are more based on single flight road, therefore, being advantageously selected for reducing the airport list to atmosphere environment impact
Runway orientation is most important to following Green Development in newly-built airports.Therefore, based on the pollutant emission and expansion when taking off
Research is dissipated, with reference to different runway orientation, influence when assessing airport difference runway orientation to ambient atmosphere environment, and then select
Orientation scheme in airport single flight road is that the important means negatively affected beneficial to reduction to atmospheric environment is also to need the important of development badly to grind
Study carefully.
The content of the invention
It is an object of the invention to overcome deficiency of the prior art, there is provided a kind of airport for reducing atmosphere environment impact
The orientation system of selection of single flight road, solve and existing be primarily upon operational efficiency when being chosen to airfield runway orientation and carry
Rise, so as to have ignored the technical problem that pollutant emission of the aircraft when runway takes off negatively affects to atmospheric environment.
In order to solve the above technical problems, the invention provides a kind of airport single flight road orientation choosing for reducing atmosphere environment impact
Selection method, it is characterized in that, comprise the following steps：
Step 1, by predicting airport future flight and weather information data, determine airport single flight road orientation span；
Stage each pollutant discharge amount is taken off in step 2, calculating；Pollutant includes NOx, SOx, CO, HC and PM.
Step 3, AERMOD model of atmospheric diffusion is established, respectively different runway orientation are caused with the aircraft in assessment area
Pollutant emission is simulated, and obtains the concentration of pollutant in corresponding assessment area；
Step 4, corresponding area is calculated based on pollutant concentration corresponding to different runway orientation, and it is right with area minimum
The runway orientation answered is to the minimum runway orientation scheme of atmosphere environment impact.
Preferably, the step 2 specifically includes following steps：
Step S201, calculate aircraft NO within takeoff phasex, SOx, CO, HC discharge capacity, calculation formula is：
Eij=(TIMj*60)*(FFj)*(EIij)*(Nej)
Wherein：EijIt is j types aircraft in takeoff phase pollutant i (NOX,SOXCO, HC) discharge capacity (g)；EIijFly for j types
Machine pollutant i in takeoff phase emission index (kg/s)；FFjFor j type aircraft utilization monomotors takeoff phase combustion
Oil stream rate (kg/s)；TIMjFor j types aircraft takeoff phase run time (min)；NejFor the engine used on j type aircrafts
Number；
Step S202, calculates PM discharge capacity of the aircraft within takeoff phase, and calculation formula is as follows：
CI=0.06949 (SN)1.234, SN≤30
CI=0.0297 (SN)2- 1.803 (SN)+31.94, SN ＞ 30
Qmixed=0.7769 (AFR) (1+BPR)+0.877
EItotal=EIPMnvol+EIPMvol-FSC+EIPMvol-FuelOrganics
EPMj=TIMj×FFj×EItotal
Wherein：EPMjFor j types aircraft takeoff phase PM discharge capacity (g)；CI is EIC Carbon Emission Index (mg/m3)；SN is cigarette
The number of degrees；QmixedFor mixing exhaust volume flow (kg/m3)；EIPMnvolFor non-volatile (non-volatile) PM emission index
(g/kg)；EIPMvol-FSCFor volatile sulfur compounds (volatile sulphate) PM emission index (g/kg)；FSC is defaulted as
0.068；ε is defaulted as 2.4；MWout=96 (SO4 -2)；MWSulpher=32；EIPMvol-FuelOrganicsFor volatile organic matter PM's
Emission index (g/kg)；EIHCCFM56CFM56 is measured for ICAO-The total hydrocarbon emissions index (g/kg) of 2-C1 engines；
EIPMvol-orgCFM56CFM56 engine volatile organic matters PM emission index (g/kg) is measured for APEX1；EIHCEngineIt is winged
Machine engine HC emission indexs (g/kg)；EItotalFor total emission index (g/kg).
Preferably, the step 3 specifically includes following steps：
Step S301, AERMOD model of atmospheric diffusion is established, set assessment area and emission source parameter；
Step S302, AERMOD diffusion simulations are calculated by the meteorological preprocessor AERMET of AERMOD model of atmospheric diffusion
Required weather information data；
Step S303, by the landform processor AERMAP of AERMOD standardization by location parameter in scope of assessment and its ground
Shape high-degree of conversion is to meet the terrain data that AERMOD calculates concentration distribution of pollutants；
Step S304, according to the AERMOD model parameters of setting, with reference to meteorological data and terrain data, carry out pollutant expansion
Simulation is dissipated, draws the concentration of pollutant in assessment area, according to pollutant concentration, draws concentration isogram.
Preferably, the assessment area is：Using runway center as origin, runway orientation is X-axis, with runway oriented perpendicular
Direction is Y-axis, is Z axis perpendicular to runway in-plane, establishes pollutant concentration and assesses coordinate system (X, Y, Z), setting and runway
Centre distance is assessment area no more than 50km region, and by assessment area gridding.
Preferably, body source emission plane discharge being set as in AERMOD model of atmospheric diffusion, emission source parameter include
Body source emission speed Qs, side dimension (Syinit), vertical dimension (Szinit) and initial perpendicular diffusion parameter (δZ- runways), wherein, Bian Wei
(Syinit), vertical dimension (Szinit) is respectively equal to the width and height of each grid；The rate of discharge of emission source and initial hang down
The circular of straight diffusion parameter is as follows；
Wherein：QsiThe pollutant i rate of discharges (g/s) of grid are corresponded to when running takeoff phase for aircraft；QsPMIt is winged
Machine corresponds to the PM rate of discharges (g/s) of grid when running takeoff phase；tsegSegment length (s) during to simulate；Δ x is equal to grid
Length (m)；Syinit is that length (m) is tieed up on side, equal to mesh width Δ y；Szinit is vertical dimension length (m), equal to grid height
Spend Δ z；P is to take off corresponding meshes number during stage running；δZ- runwaysThe initial of grid is corresponded to for aircraft on runway to hang down
Straight diffusion parameter (m)；W is half runway width (m)；U is the mean wind speed (m/s) in simulated time section.
Preferably, the process of the corresponding area of pollutant concentration calculating is：Calculate concentration and be more than 0ug/m3Concentration it is equivalent
Line surrounds area S, quantifies influence degree of the single flight road to atmospheric environment of different azimuth with area.
Compared with prior art, the beneficial effect that is reached of the present invention is：The present invention is by simulating single flight road different azimuth
When caused atmosphere environment impact, the airport single flight road orientation system of selection minimum to atmosphere environment impact is constructed, to reduce
Take off to discharge pollutants influences on ambient atmosphere environment.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the inventive method；
Fig. 2 is the schematic diagram that runway orientation is 90 °/270 ° in the embodiment of the present invention；
Fig. 3 is the schematic diagram that runway orientation is 86 °/266 ° in the embodiment of the present invention；
Fig. 4 is the schematic diagram that runway orientation is 97 °/277 ° in the embodiment of the present invention；
Fig. 5 is NOx concentration isogram when runway orientation is 90 °/270 ° in Fig. 2 embodiments；
Fig. 6 is NOx concentration isogram when runway orientation is 86 °/266 ° in Fig. 3 embodiments；
Fig. 7 is NOx concentration isogram when runway orientation is 97 °/277 ° in Fig. 4 embodiments.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention
Technical scheme, and can not be limited the scope of the invention with this.
As shown in figure 1, a kind of airport single flight road orientation system of selection of reduction atmosphere environment impact of the present invention, including with
Lower step：
Step S1, by predicting airport future flight and weather information data, determine airport single flight road orientation span.
Step S101, the airport planning target proposed according to newly-built airports area relevant departments and following aviation services need
The amount of asking, according to China《Civil airport overall planning specification MH5002-XXXX》Recommendation method is such as：Analogy method, market define method, city
Market share analytic approach, expert survey and comprehensive analysis and judgement method prediction airport include year flight sortie, peak hour sortie, machine
Type combines and taken off the Flight Information data including the stage running time.This prediction process is referring to prior art Literature
《Airport planning and design》.
Step S102, according to International Civil Aviation Organization (International Civil Aviation Organization,
ICAO) annex 14 provides, (can be high by university of Wyoming laboratory based on the airport location aerological data of at least 5 years
Empty meteorogical phenomena database obtains) and history surface weather observation data (U.S.National Oceanic and Atmospheric Administration (NOAA) can be passed through
Meteorological measuring storehouse obtains), using BP neural network method or Bayesian network method is improved, prediction is following to include the number of plies, each layer
Aerological data including air pressure, height, temperature, wind direction, wind speed, and including wind direction, wind speed, dry-bulb temperature and total cloud
Airport year, month, day high-altitude and Ground Meteorological information data including amount, low cloud cover.This prediction process is referring to prior art Chinese
Offer《Application of the BP neural network in meteorological data forecasting research》Or《Calculated in advance based on the meteorological data for improving Bayesian network
Method research》.
Step S103, wind direction, wind speed in prediction airport future terrestrial weather information data, is drawn using diagram method
Wind rose carries out wind-force load analysis.Wind-force load is called air quantity, China《Civil airport movement area technical standard MH5001-
2013》Referred to as utilization rate, refer to one or one group of runway uses the time percentage not limited by crosswind component, ICAO
Suggest that wind-force load is with Federal Aviation management board (Federal Aviation Administration, FAA) and China
95%.In order to determine the air quantity of crosswind wind speed without departing from above-mentioned defined cardinal wind coating ratio, to judge runway utilization rate
Whether more than 95% requirement is met.So needing after carrying out wind-force load analysis, find out and all meet ICAO and FAA and China
《Civil airport movement area technical standard MH5001-2013》In requirement to runway bar number and orientation, i.e.,：It is intended that and uses airport aircraft
Airport utilization rate not less than 95% constraints under, determine single flight road bearing range, be designated as：[α, β, φ ...], herein,
α, β, φ represent the angle combinations of runway one end and the other end respectively, and due to using true bearing when wind-force load is analyzed, therefore with
Upper each runway orientation is all represented with true bearing.Such as：In the embodiment of the present invention, optional three orientation in single flight road are respectively as schemed
Shown in 2~4, α=90 °/270 °, β=86 °/266 °, φ=97 °/277 °.This wind-force load analyzes process and determines to run orientation
Technology is referring to prior art Literature《Airport system：Planning, design and management》.
Step S2, calculate the pollutant (NO in stage of taking offx, SOx, CO, HC, PM) discharge capacity.
Step S201, with reference to the ICAO pollutant discharge amounts for being based on the aircraft operational mode time (time-in-mode, TIM)
Computational methods carry with ICAO aircraft engine emissions database (Aircraft engine emissions database, EEDB)
All kinds of aircrafts supplied correspond to the emission index of fuel flow rate and NOx, SOx, CO, HC of the engine under takeoff phase, calculate
Aircraft NO within takeoff phasex, SOx, CO, HC discharge capacity.Calculation formula is：
Eij=(TIMj*60)*(FFj)*(EIij)*(Nej)
Wherein：EijIt is j types aircraft in takeoff phase pollutant i (NOX,SOXCO, HC) discharge capacity (g)；EIijFly for j types
Machine pollutant i in takeoff phase emission index (kg/s)；FFjFor j type aircraft utilization monomotors takeoff phase combustion
Oil stream rate (kg/s)；TIMjFor j types aircraft takeoff phase run time (min)；NejFor the engine used on j type aircrafts
Number.
Step S202, with reference to First-Order Approximation3.0methodology (FOA3) computational methods with
ICAO aircraft engine emissions database (Aircraft engine emissions database, EEDB) provides all types of
Fuel flow rate, smoke intensity number, AFR, BPR of the aircraft engine in takeoff phase calculate PM discharge capacity of the aircraft within takeoff phase.
Calculation formula is as follows：
CI=0.06949 (SN)1.234, SN≤30
CI=0.0297 (SN)2- 1.803 (SN)+31.94, SN ＞ 30
Qmixed=0.7769 (AFR) (1+BPR)+0.877
EItotal=EIPMnvol+EIPMvol-FSC+EIPMvol-FuelOrganics
EPMj=TIMj×FFj×EItotal
Wherein：EPMjFor j types aircraft takeoff phase PM discharge capacity (g)；CI is EIC Carbon Emission Index (mg/m3)；SN is cigarette
The number of degrees；QmixedFor mixing exhaust volume flow (kg/m3)；EIPMnvolFor non-volatile (non-volatile) PM emission index
(g/kg)；EIPMvol-FSCFor volatile sulfur compounds (volatile sulphate) PM emission index (g/kg)；FSC is defaulted as
0.068；ε is defaulted as 2.4；MWout=96 (SO4 -2)；MWSulpher=32；EIPMvol-FuelOrganicsFor volatile organic matter PM's
Emission index (g/kg)；EIHCCFM56The total hydrocarbon emissions index (g/kg) of CFM56-2-C1 engines is measured for ICAO；
EIPMvol-orgCFM56CFM56 engine volatile organic matters PM emission index (g/kg) is measured for APEX1；EIHCEngineIt is winged
Machine engine HC emission indexs (g/kg)；EItotalFor total emission index (g/kg).
Step S3, when assessing airport future operation, due to taking off stage emission pollution caused by different runway orientation
The influence of atmospheric environment near the diffusion couple of thing；
Step S301, AERMOD model of atmospheric diffusion is established, set assessment area, discharged with reference to plane discharge property settings
Source parameter.
Using runway center as origin, runway orientation (i.e. runway rectilinear direction, be referred to as east-west direction) is X-axis, with
The direction (i.e. North and South direction) of runway oriented perpendicular is Y-axis, is Z axis perpendicular to runway in-plane, establishes pollutant concentration and comment
Estimate coordinate system (X, Y, Z)；According to China《Environmental impact assessment fire protection technology-atmospheric environment HJ2.2-2008》In to use
The estimation range of AERMOD model of atmospheric diffusion is not more than 50km requirement, and setting is not more than 50km area with runway centre distance
Domain is assessment area, and by assessment area gridding G (x, y, z), x, y ∈ Z, z ∈ N+, setting Gridding length Δ x, width Delta y
And height Δ z is respectively equal to the arithmetic average of all prediction type length, width and height；According to the sky in stage of taking off
Between be distributed, by plane discharge be matched to covering runway grid, due to take off stage tail spray high temperature and high speed emission performance
Plume rise can be caused notable, so, with reference to AERMOD model of atmospheric diffusion operation mechanism and plane discharge characteristic, aircraft is arranged
Body source emission when putting the body source emission being set as in AERMOD model of atmospheric diffusion, and being taken off to the correspondence needed for model
Speed Qs, side dimension (Syinit), vertical dimension (Szinit), initial perpendicular diffusion parameter (δZ- runways) be configured, wherein, Bian Wei
(Syinit), vertical dimension (Szinit) is respectively equal to the width and height of each grid.The rate of discharge of emission source and consider
The circular of the initial perpendicular diffusion parameter of plume rise characteristic is as follows；
Wherein：QsiI (the NO of grid are corresponded to when running takeoff phase for aircraftX,SOXCO, HC) pollutant emission speed
(g/s)；QsPMThe PM rate of discharges (g/s) of grid are corresponded to when running takeoff phase for aircraft；tsegSegment length (s) during to simulate；
Δ x is equal to Gridding length (m)；Syinit is that length (m) is tieed up on side, equal to mesh width Δ y；Szinit is vertical dimension length
(m), equal to grid height Δ z；P is to take off corresponding meshes number during stage running；δZ- runwaysFor aircraft on runway it is right
Answer the initial perpendicular diffusion parameter (m) of grid；W is half runway width (m)；U is the mean wind speed in simulated time section
(m/s)。
Step S302, AERMOD diffusion simulations are calculated by the meteorological preprocessor AERMET of AERMOD model of atmospheric diffusion
Necessary weather information data.
The aerological data and Ground Meteorological in the following simulation period are extracted from the weather information data of prediction respectively
Data, wherein, aerological data include the number of plies, each layer air pressure, height, temperature, wind direction, wind speed；Ground meteorological data includes
The meteorological element such as wind direction, wind speed, dry-bulb temperature and total amount of cloud, low cloud cover, with AERMET be calculated including friction velocity,
Boundary layer profile data including Monin-Obukhov length, convection velocity yardstick, temperature scale and mixing height etc..
Step S303, the position of each grid in scope of assessment is joined by the landform processor AERMAP of AERMOD standardization
Number and its Terrain Elevation, which are converted into, meets the terrain data that AERMOD calculates concentration distribution of pollutants.Used terrain data is
SRTM90 data, the data are mainly surveyed by American Space General Administration (NASA) and State Bureau of Surveying and Mapping of U.S. Department of Defense (NIMA) joint
Amount, covering the whole world more than 80% top digital terrain elevation model (can be downloaded by SRTM topographic databases) is made.Root
The actual topographical features of Various Seasonal where region according to the study, albedo, ripple ratio, rough surface are determined by artificial observation
Degree.
Step S304, according to the AERMOD model parameters of setting, with reference to step S302 meteorological data and step S303 institutes
The terrain data obtained, pollutant diffusion simulations are carried out, the annual of each grid pollutant or monthly average in assessment area can be drawn
Or daily mean of concentration (CYear(x, y, z) or CMonth(x, y, z) or CDay(x, y, z)), according to pollutant concentration corresponding to each grid, draw
Concentration isogram.
Pollutant diffusion simulations are carried out according to S3 steps to the different runway orientation determined in S1 respectively, polluted by each grid
Thing concentration, draw concentration isogram.In an embodiment of the present invention, NOx concentration corresponding to three runway orientation schemes
Isogram is respectively as shown in Fig. 5~7.
Step S4, corresponding area is calculated based on aerial craft pollution thing concentration caused by different runway orientation, and with area most
Runway orientation corresponding to small is to the minimum runway orientation scheme of atmosphere environment impact.
It is more than 0ug/m by calculating concentration3Concentration isopleth surround area S, quantify the single flight road of different azimuth to big
The influence degree in compression ring border；
In an embodiment of the present invention, concentration corresponding to three runway orientation schemes is more than 0ug/m3Concentration isopleth bag
Envelope surface integration is not as shown in table 1：
Table 1：Concentration isopleth corresponding to three runway orientation schemes surrounds area
Quantized result according to pollutant to atmosphere environment impact, select minimum area (Smin) corresponding to airport single flight road
Orientation is to the minimum airport single flight road orientation scheme of atmosphere environment impact.
In an embodiment of the present invention, minimum area (S is selectedmin) corresponding to airport single flight road orientation be 90 °/
270 °, i.e. this runway orientation is to the minimum airport single flight road orientation scheme of atmosphere environment impact.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and modification can also be made, these improvement and modification
Also it should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of airport single flight road orientation system of selection for reducing atmosphere environment impact, it is characterized in that, comprise the following steps：
Step 1, by predicting airport future flight and weather information data, determine airport single flight road orientation span；
Stage each pollutant discharge amount is taken off in step 2, calculating；Pollutant includes NOx, SOx, CO, HC and PM.
Step 3, AERMOD model of atmospheric diffusion is established, respectively different runway orientation are caused with the aerial craft pollution in assessment area
Thing discharge is simulated, and obtains the concentration of pollutant in assessment area corresponding to different runway orientation；
Step 4, corresponding area is calculated based on pollutant concentration corresponding to different runway orientation, and with corresponding to area minimum
Runway orientation is to the minimum runway orientation scheme of atmosphere environment impact.
2. a kind of airport single flight road orientation system of selection for reducing atmosphere environment impact according to claim 1, its feature
It is that the step 2 specifically includes following steps：
Step S201, calculate aircraft NO within takeoff phasex, SOx, CO, HC discharge capacity, calculation formula is：
Eij=(TIMj*60)*(FFj)*(EIij)*(Nej)
Wherein：EijIt is j types aircraft in takeoff phase pollutant i (NOX,SOXCO, HC) discharge capacity (g)；EIijExist for j type aircrafts
Pollutant i emission index (kg/s) in takeoff phase；FFjFor j type aircraft utilization monomotors takeoff phase fuel oil stream
Rate (kg/s)；TIMjFor j types aircraft takeoff phase run time (min)；NejFor the engine used on j type aircrafts
Number；
Step S202, calculates PM discharge capacity of the aircraft within takeoff phase, and calculation formula is as follows：
CI=0.06949 (SN)1.234, SN≤30
CI=0.0297 (SN)2- 1.803 (SN)+31.94, SN ＞ 30
Qmixed=0.7769 (AFR) (1+BPR)+0.877
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EItotal=EIPMnvol+EIPMvol-FSC+EIPMvol-FuelOrganics
EPMj=TIMj×FFj×EItotal
Wherein：EPMjFor j types aircraft takeoff phase PM discharge capacity (g)；CI is EIC Carbon Emission Index (mg/m3)；SN is smoke intensity number；
QmixedFor mixing exhaust volume flow (kg/m3)；EIPMnvolFor non-volatile (non-volatile) PM emission index (g/
kg)；EIPMvol-FSCFor volatile sulfur compounds (volatile sulphate) PM emission index (g/kg)；FSC is defaulted as
0.068；ε is defaulted as 2.4；MWout=96 (SO4 -2)；MWSulpher=32；EIPMvol-FuelOrganicsFor volatile organic matter PM's
Emission index (g/kg)；EIHCCFM56The total hydrocarbon emissions index (g/kg) of CFM56-2-C1 engines is measured for ICAO；
EIPMvol-orgCFM56CFM56 engine volatile organic matters PM emission index (g/kg) is measured for APEX1；EIHCEngineIt is winged
Machine engine HC emission indexs (g/kg)；EItotalFor total emission index (g/kg).
3. a kind of airport single flight road orientation system of selection for reducing atmosphere environment impact according to claim 1, its feature
It is that the step 3 specifically includes following steps：
Step S301, AERMOD model of atmospheric diffusion is established, set assessment area and emission source parameter；
Step S302, calculated by the meteorological preprocessor AERMET of AERMOD model of atmospheric diffusion needed for AERMOD diffusion simulations
Weather information data；
Step S303 is high by location parameter in scope of assessment and its landform by the landform processor AERMAP of AERMOD standardization
Degree, which is converted into, meets the terrain data that AERMOD calculates concentration distribution of pollutants；
Step S304, according to the AERMOD model parameters of setting, with reference to meteorological data and terrain data, carry out pollutant diffusion mould
Intend, draw the concentration of pollutant in assessment area, according to pollutant concentration, draw concentration isogram.
4. a kind of airport single flight road orientation system of selection for reducing atmosphere environment impact according to claim 3, its feature
It is that the assessment area is：Using runway center as origin, runway orientation is X-axis, and the direction with runway oriented perpendicular is Y-axis, is hung down
It is directly Z axis in runway in-plane, establishes pollutant concentration and assess coordinate system (X, Y, Z), setting is little with runway centre distance
In 50km region be assessment area, and by assessment area gridding.
5. a kind of airport single flight road orientation system of selection for reducing atmosphere environment impact according to claim 4, its feature
It is the body source emission being set as plane discharge in AERMOD model of atmospheric diffusion, emission source parameter includes body source emission speed
Qs, Bian Wei, vertical peacekeeping initial perpendicular diffusion parameter, wherein, Bian Wei, vertical dimension are respectively equal to the width and height of each grid；
The rate of discharge of emission source and the circular of initial perpendicular diffusion parameter are as follows；
<mrow>
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<mo>&times;</mo>
<mi>&Delta;</mi>
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<mi>p</mi>
</mrow>
</mfrac>
</mrow>
<mrow>
<msub>
<mi>Qs</mi>
<mrow>
<mi>P</mi>
<mi>M</mi>
</mrow>
</msub>
<mo>=</mo>
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<mi>p</mi>
</mrow>
</mfrac>
</mrow>
Wherein：QsiThe pollutant i rate of discharges (g/s) of grid are corresponded to when running takeoff phase for aircraft；QsPMExist for aircraft
Takeoff phase corresponds to the PM rate of discharges (g/s) of grid when running；tsegSegment length (s) during to simulate；Δ x is equal to Gridding length
(m)；Syinit is that length (m) is tieed up on side, equal to mesh width Δ y；Szinit is vertical dimension length (m), equal to grid height Δ
z；P is to take off corresponding meshes number during stage running；δZ- runwaysThe initial perpendicular for corresponding to grid on runway for aircraft expands
Dissipate parameter (m)；W is half runway width (m)；U is the mean wind speed (m/s) in simulated time section.
6. a kind of airport single flight road orientation system of selection for reducing atmosphere environment impact according to claim 1, its feature
It is that the process that pollutant concentration calculates corresponding area is：Calculate concentration and be more than 0ug/m3Concentration isopleth surround area S,
Quantify influence degree of the single flight road to atmospheric environment of different azimuth with area.
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