CN108846170A - Tunnel drainage Optimized System Design method is worn under city based on hydraulic model - Google Patents
Tunnel drainage Optimized System Design method is worn under city based on hydraulic model Download PDFInfo
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 34
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Abstract
The invention discloses wear tunnel drainage Optimized System Design method under a kind of city based on hydraulic model：Determine high area and low area's catchment area；High area's high accuracy DEM model is established, low area DEM accurate model is established；Two-dimentional hydraulic model is established；To discharge outlet safety evaluation；Tunnel drainage Optimized System Design.The advantage of the invention is that being fitted using profile of road, the high area DEM model of elevational point encryption technology building high-precision, simultaneously using the genuine accurate DEM model of BIM technology building, the accuracy of two-dimentional overland flow simulation has been significantly greatly increased, tunnel drainage System drainage whole process is worn under by two-dimentional hydraulic model to simulate, it is arranged by different operating conditions, it can determine optimal tunnel drainage system conditions, pass through two-dimentional dynamic analog, the high area of the reflection of system and area drain running situation, by hydraulic model check result feedback to tunnel drainage system design scheme, the science and safety of the design of tunnel drainage system can be improved, improve urban waterlogging Disaster Defense Capability.
Description
Technical field
The present invention relates to municipal works technologies and geographic information system technology field, more particularly to one kind to be based on waterpower mould
Tunnel drainage Optimized System Design method is worn under the city of type.
Background technique
In recent years, urban waterlogging disaster in China's is got worse, and the genuine closed soak of formation, and road are worn under city
Road longitudinal slope is larger, is the severely afflicated area of urban waterlogging, and serious ponding easily occurs under intense rainfall condition can lead to traffic jam
Even traffic is paralysed completely.
Due to wearing the particularity of genuine importance and its drainage condition under city, how to resolve down and wear tunnel drainage
Issue concerns are to the normal operation of urban transportation and the safety of people's lives and properties.By constructing tunnel drainage system waterpower mould
Type is analysed scientifically and wears genuine effectiveness factors producing cause under city, effectiveness factors risk assessment provided, in conjunction with Design of Pump Station side
Case optimizes, and could preferably serve under city and wear the design of tunnel drainage system, node city effectiveness factors are worn under reduction
Generation.
Those skilled in the art are dedicated to solving above-mentioned technological deficiency.
Summary of the invention
In view of the above drawbacks of the prior art, technical purpose of the invention is to provide a kind of based on hydraulic model
Tunnel drainage Optimized System Design method is worn under city, by building hydraulic model to tunnel drainage waterlogging under different operating conditions
Scene is simulated, meanwhile, it can be simulated according to difference with pumping and opening water pumping position, determine the optimal operation work of tunnel pumping plant
Condition.
To realize the above-mentioned technical purpose, the present invention provides wear tunnel drainage system under a kind of city based on hydraulic model
Unite optimum design method, be：
(1) high area and low area's catchment area are determined；
(2) high area's high accuracy DEM model is established, low area DEM accurate model is established；
(3) two-dimentional hydraulic model is established；
(4) to discharge outlet safety evaluation；
(5) tunnel drainage Optimized System Design；Wherein step (2) area Zhong Gao high accuracy DEM model includes that discrete point picks
It removes, the encryption of road height fitting and elevational point；Wherein the method for building up of step (2) area Zhong Gao high accuracy DEM model is：It picks
Except salient point and concave point significantly isolated in TIN model；Then boundary lines of roads is recognized in TIN model, and triangle gridding is set
Line is blocked, profile of road design curve is fitted, obtains smooth road TIN model；Finally using triangle core as slotting
Access point encrypts elevational point, and encrypts point height according to space interpolation theoretical calculation.
Preferably, wherein low area DEM accurate model is by building BIM model, then by coordinate and elevation in BIM model
Element export, makes low area DEM accurate model, and low area DEM model is high for the negligible genuine top grade separation road of hydraulic analogy
Journey.
Preferably, wherein two-dimentional hydraulic model method for building up is：By the way that different storm recurrence periods are arranged, water pump number of units, open
The combination of the governing factors such as position is pumped, in conjunction with high area and low area's high accuracy DEM model construction two dimension overland flow model, utilizes water
Power prototype software simulates tunnel drainage system rainfall whole process under different operating conditions.
Preferably, wherein discharge outlet safety evaluation according to crossings on different level tunnel drainage should set independent drainage system,
Water outlet must be reliable, in conjunction with above-mentioned two-dimentional hydraulic analogy as a result, wearing tunnel drainage system under under Designed recurrence period, school
Core pumping drainage outlet safety；In conjunction with above-mentioned two-dimentional hydraulic analogy as a result, wearing the configuration of tunnel drainage water pump in pump station under, opening
It pumps position and the design of pump forebay is checked, determine optimal pumping station operation operating condition.
Preferably, wherein tunnel drainage system design optimization scheme is：Pass through hydraulic model software two dimension overland flow mould
It is quasi-, genuine drainage system rainfall whole process is simulated, ponding reason is analyzed, optimizes pumping drainage system design scheme, determines optimal
Pumping station operation operating condition.
Preferably, wherein discrete point is rejected through preliminary surveying elevation scatterplot or contour data, constructs the preliminary mould of TIN
Type rejects significant discrete salient point and concave point, it is ensured that the correctness of altitude data
Preferably, road height fitting handles high area's boundary lines of roads for closed curve, utilizes ArcGIS geography information system
System software is conducted into TIN model, and blocks line for boundary lines of roads as triangle gridding, meanwhile, road axis is fitted
Vertical section elevational point imported into TIN model, complete road high-precision TIN models fitting.
Preferably, road Height Fitting Models are regenerated into TIN model, to increase ground elevation model accuracy, increased
TIN triangle gridding elevation interpolated point determines that triangle core is elevation interpolated point to calculate convenient for model；
Interpolated point coordinate is calculated by formula 1：
According to space interpolation theory：On spatial position closer to point, characteristic value more has similitude.It will based on this
Above-mentioned triangle core coordinate imports in model, nearest triangular mesh is locked by retrieval, and as corresponding triangle
Interpolated point；
Interpolation point height has the calculating of formula 2：
By:
It enables：
?:
In above-mentioned formula：Center of gravity (O point) coordinate is (x0, y0, z0)；Triangular apex coordinate is respectively：A (x1, y1,
Z1), B (x2, y2, z2), C (x3, y3, z3), wherein Z value is elevation.
Beneficial effects of the present invention：
1, the advantage of the invention is that using profile of road fitting, the high area DEM of elevational point encryption technology building high-precision
Model, while using the genuine accurate DEM model of BIM technology building, the accuracy of two-dimentional overland flow simulation has been significantly greatly increased.
2, the present invention wears tunnel drainage System drainage whole process by two-dimentional hydraulic model under and simulates, and passes through difference
Operating condition setting, it may be determined that optimal tunnel drainage system conditions.
3, the present invention is by two-dimentional dynamic analog, the high area of the reflection of system and low area's drainage system operating condition, by waterpower
The science and safety of the design of tunnel drainage system can be improved to tunnel drainage system design scheme in Model Checking result feedback
Property, improve urban waterlogging Disaster Defense Capability.
It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with
It is fully understood from the purpose of the present invention, feature and effect.
Detailed description of the invention
Fig. 1 is workflow schematic diagram of the invention；
Fig. 2 is high area DEM model construction workflow schematic diagram of the invention；
Fig. 3 is original TIN illustraton of model of the invention；
Fig. 4 is road height fitting effect picture of the invention；
Fig. 5 is elevational point cipher round results figure of the invention；
Fig. 6 is hydraulic model building flow chart of the invention.
Specific embodiment
Such as Fig. 1 is simultaneously combined shown in Fig. 2 and Fig. 3：One specific embodiment of method of the invention, based on hydraulic model
Tunnel drainage Optimized System Design method is worn under city, is：
(1) high area and low area's catchment area are determined；
(2) high area's high accuracy DEM model is established, low area DEM accurate model is established；
(3) two-dimentional hydraulic model is established；
(4) to discharge outlet safety evaluation；
(5) tunnel drainage Optimized System Design.
Wherein, step (2) area Zhong Gao high accuracy DEM model includes discrete point rejecting, road height fitting and elevational point
Encryption；
Wherein, the method for building up of step (2) area Zhong Gao high accuracy DEM model is：It rejects significantly isolated in TIN model
Salient point and concave point；Then boundary lines of roads is recognized in TIN model, and triangle gridding is set and blocks line, fitting road is vertical disconnected
Face design curve obtains smooth road TIN model；Finally elevational point is added as insertion point using triangle core
It is close, and point height is encrypted according to space interpolation theoretical calculation.
Wherein, then low area DEM accurate model is led coordinate and hyposographic features in BIM model by building BIM model
Out, low area DEM accurate model is made, low area DEM model is for the negligible genuine top grade separation road elevation of hydraulic analogy.
Wherein, two-dimentional hydraulic model method for building up is：Position is pumped by the way that different storm recurrence periods, water pump number of units is arranged, opens
Etc. governing factors combination, in conjunction with high area and low area's high accuracy DEM model construction two dimension overland flow model, utilize hydraulic model
Software simulates tunnel drainage system rainfall whole process under different operating conditions.
Wherein, discharge outlet safety evaluation should set independent drainage system, water outlet according to crossings on different level tunnel drainage
Must be reliable, in conjunction with above-mentioned two-dimentional hydraulic analogy as a result, wearing tunnel drainage system under under Designed recurrence period, check pumping plant
Discharge outlet safety；In conjunction with above-mentioned two-dimentional hydraulic analogy as a result, wearing the configuration of tunnel drainage water pump in pump station under, opening water pumping position
And the design of pump forebay is checked, and determines optimal pumping station operation operating condition.
Wherein, tunnel drainage system design optimization scheme is：It is simulated by hydraulic model software two dimension overland flow, it is right
The simulation of tunnel drainage system rainfall whole process, analyzes ponding reason, optimizes pumping drainage system design scheme, determines optimal pump
It stands operating condition.
Wherein, discrete point is rejected through preliminary surveying elevation scatterplot or contour data, constructs TIN rudimentary model, is rejected
Significant discrete salient point and concave point, it is ensured that the correctness of altitude data
Road height fitting handles high area's boundary lines of roads for closed curve, utilizes ArcGIS GIS software
It is conducted into TIN model, and blocks line for boundary lines of roads as triangle gridding, meanwhile, by the vertical disconnected of road axis fitting
Face elevational point is imported into TIN model, completes road high-precision TIN models fitting.
Road Height Fitting Models are regenerated into TIN model, to increase ground elevation model accuracy, increase TIN triangle
Gridded elevation interpolated point determines that triangle core is elevation interpolated point to calculate convenient for model；
Interpolated point coordinate is calculated by formula 1：
According to space interpolation theory：On spatial position closer to point, characteristic value more has similitude.It will based on this
Above-mentioned triangle core coordinate imports in model, nearest triangular mesh is locked by retrieval, and as corresponding triangle
Interpolated point；
Interpolation point height has the calculating of formula 2：
By：
It enables：
?:
In above-mentioned formula：Center of gravity (O point) coordinate is (x0, y0, z0)；Triangular apex coordinate is respectively：A (x1, y1,
Z1), B (x2, y2, z2), C (x3, y3, z3), wherein Z value is elevation.
Beneficial effects of the present invention：
The advantage of the invention is that using profile of road fitting, the high area DEM mould of elevational point encryption technology building high-precision
Type, while using the genuine accurate DEM model of BIM technology building, the accuracy of two-dimentional overland flow simulation has been significantly greatly increased.This
Invention is worn tunnel drainage System drainage whole process by two-dimentional hydraulic model under and is simulated, and is arranged by different operating conditions, can be true
Fixed optimal tunnel drainage system conditions.The present invention passes through two-dimentional dynamic analog, the high area of the reflection of system and area drain
Hydraulic model check result is fed back to tunnel drainage system design scheme, tunnel drainage system can be improved by running situation
The science and safety of design improve urban waterlogging Disaster Defense Capability.
Embodiment：
It include DEM production, hydraulic model building, two-dimentional hydraulic analogy structure in conjunction with the main implementation content of 1 present invention of attached drawing
It builds, discharge outlet safety evaluation, pump stations condition check, tunnel drainage system design optimization.
DEM modelling is divided into high area DEM model and low area DEM model, since general measure data are difficult to meet DEM
Model accuracy requirement, therefore, high area DEM model uses elevational point encryption technology, makes high accuracy DEM model, low area passes through
BIM technology makes DEM accurate model.
It mainly include discrete point rejecting, road height fitting, elevational point encryption meter in conjunction with the area DEM high modelling of attached drawing 2
Calculate three parts；
(1) discrete point is rejected
By preliminary surveying elevation scatterplot or contour data, TIN rudimentary model is constructed, rejects significant discrete salient point
And concave point, it is ensured that the correctness of altitude data,.TIN rudimentary model is detailed in attached drawing 3.
(2) road height fitting
High area's boundary lines of roads is handled as closed curve, is conducted into TIN mould using ArcGIS GIS software
In type, and line is blocked using boundary lines of roads as triangle gridding, meanwhile, the vertical section elevational point of road axis fitting is imported
Into TIN model, road high-precision TIN models fitting is completed.Fitting effect is detailed in attached drawing 4.
(3) elevational point computations
Above-mentioned road Height Fitting Models are regenerated into TIN model, to increase ground elevation model accuracy, increase TIN
Triangle gridding elevation interpolated point, to calculate convenient for model present invention determine that triangle core is elevation interpolated point；
Interpolated point coordinate is calculated by formula 1：
According to space interpolation theory：On spatial position closer to point, characteristic value more has similitude.It will based on this
Above-mentioned triangle core coordinate imports in model, nearest triangular mesh is locked by retrieval, and as corresponding triangle
Interpolated point.
Interpolation point height has the calculating of formula 2：
By：
It enables:
?：
In above-mentioned formula：Center of gravity (O point) coordinate is (x0, y0, z0)；Triangular apex coordinate is respectively：A (x1, y1,
Z1), B (x2, y2, z2), C (x3, y3, z3), wherein Z value is elevation, and interpolation is detailed in attached drawing 5.
Low area DEM model：The present invention is exported the elements such as coordinate and elevation in BIM model by building BIM model, is made
The area Zuo Di DEM accurate model, low area DEM modelling should ignore genuine top grade separation road elevation.
Two-dimentional hydraulic analogy building：The streamflow regime of urban drainage pipe network is broadly divided into without pressure unsteady flow and has pressure non-
Steady flow, when rainfall intensity is smaller, the water flow in drainage pipeline networks is generally flowed according to pipe duct both ends water surface height difference to bottom,
Water flow is without pressure unsteady flow at this time；When encountering heavy rainfall in short-term, the pipe network cross-section of river is not able to satisfy traffic requirement, may go out
Existing pressure unsteady flow.
Conventional drainage systems water force is, as supposed premise, can not react the practical fortune of drainage system without pressure unsteady flow
Market condition.The hydraulic model software that the present invention uses uses the dynamic wave, simulates the time of water flow and space in drainage system and becomes
The Complex Flow Status such as change and return water, adverse current and pressure flow are dynamic.And import above-mentioned DEM model in model, carry out two-dimentional overland flow
Analysis.Hydraulic model building process is detailed in attached drawing 6.
Different operating condition settings：To wear tunnel drainage system design effect under check, water can be utilized by the way that different operating conditions are arranged
Power model is checked.In conjunction with conventional pumping plant design content, conventional operating condition design is referring to table 1：
The different operating condition settings of table 1
Discharge outlet safety evaluation：It is arranged in conjunction with above-mentioned operating condition, wears tunnel drainage system under using hydraulic model software
Pumping drainage outlet safety is proved, and is considered as drainage system receiving water body water level to the influence of the jacking of discharge outlet.
Pump stations condition is checked：It is arranged in conjunction with above-mentioned operating condition, wears genuine water pump in pump station platform under using hydraulic model software
Number pumps volume and opens the conditions such as water pumping position and simulated, and passes through parameter adjustment and determines optimal pumping station operation operating condition.
Tunnel drainage system design optimization is constructed by high accuracy DEM model and hydraulic model, to wearing tunnel under city
High area and low area's drainage system carry out two-dimensional analog, true to reflect tunnel drainage system actual motion effect under design parameter.
Assess influence of the high area's drainage system to low area's drainage system and under wear the science and reasonability of the design of tunnel drainage system,
And according to model result, ponding reason is analyzed, tunnel drainage system design parameters are worn under and are optimized.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be within the scope of protection determined by the claims.
Claims (8)
1. wearing tunnel drainage Optimized System Design method under a kind of city based on hydraulic model, it is characterised in that：Its method is：
(6) high area and low area's catchment area are determined；
(7) high area's high accuracy DEM model is established, low area DEM accurate model is established；
(8) two-dimentional hydraulic model is established；
(9) to discharge outlet safety evaluation；
(10) tunnel drainage Optimized System Design；
Step (2) area Zhong Gao high accuracy DEM model includes that discrete point is rejected, road height fitting and elevational point encrypt；
The method for building up of step (2) area Zhong Gao high accuracy DEM model is：Reject salient point significantly isolated in TIN model and recessed
Point；Then boundary lines of roads is recognized in TIN model, and triangle gridding is set and blocks line, be fitted profile of road design curve,
Obtain smooth road TIN model；Finally elevational point is encrypted as insertion point using triangle core, and according to space
Interpolation theory calculates encryption point height.
2. tunnel drainage Optimized System Design method is worn under a kind of city based on hydraulic model as described in claim 1,
It is characterized in that：Then low area DEM accurate model is exported coordinate in BIM model and hyposographic features by building BIM model, system
The area Zuo Di DEM accurate model, low area DEM model is for the negligible genuine top grade separation road elevation of hydraulic analogy.
3. tunnel drainage Optimized System Design method is worn under a kind of city based on hydraulic model as described in claim 1,
It is characterized in that：Two-dimentional hydraulic model method for building up is：The control such as position is pumped by the way that different storm recurrence periods, water pump number of units is arranged, opens
Factor combination processed, in conjunction with high area and low area's high accuracy DEM model construction two dimension overland flow model, utilizes hydraulic model software pair
Tunnel drainage system rainfall whole process is simulated under different operating conditions.
4. tunnel drainage Optimized System Design method is worn under a kind of city based on hydraulic model as described in claim 1,
It is characterized in that：Discharge outlet safety evaluation should set independent drainage system according to crossings on different level tunnel drainage, and water outlet is necessary
Reliably, in conjunction with above-mentioned two-dimentional hydraulic analogy as a result, wearing tunnel drainage system under under Designed recurrence period, check pumping drainage goes out
Road safety；In conjunction with above-mentioned two-dimentional hydraulic analogy as a result, wearing the configuration of tunnel drainage water pump in pump station under, opening water pumping position and pump forebay
Design is checked, and determines optimal pumping station operation operating condition.
5. tunnel drainage Optimized System Design method is worn under a kind of city based on hydraulic model as described in claim 1,
It is characterized in that：Tunnel drainage system design optimization scheme is：It is simulated by hydraulic model software two dimension overland flow, tunnel is arranged
The simulation of water system rainfall whole process, analyzes ponding reason, optimizes pumping drainage system design scheme, determines optimal pumping station operation work
Condition.
6. tunnel drainage Optimized System Design method is worn under a kind of city based on hydraulic model as described in claim 1,
It is characterized in that：Discrete point is rejected through preliminary surveying elevation scatterplot or contour data, and TIN rudimentary model is constructed, and is rejected significant
Discrete salient point and concave point, it is ensured that the correctness of altitude data.
7. tunnel drainage Optimized System Design method is worn under a kind of city based on hydraulic model as described in claim 1,
It is characterized in that：Road height fitting handles high area's boundary lines of roads for closed curve, utilizes ArcGIS GIS software
It is conducted into TIN model, and blocks line for boundary lines of roads as triangle gridding, meanwhile, by the vertical disconnected of road axis fitting
Face elevational point is imported into TIN model, completes road high-precision TIN models fitting.
8. tunnel drainage Optimized System Design method is worn under a kind of city based on hydraulic model as described in claim 1,
It is characterized in that：Road Height Fitting Models are regenerated into TIN model, to increase ground elevation model accuracy, increase TIN triangle
Gridded elevation interpolated point determines that triangle core is elevation interpolated point to calculate convenient for model；
Interpolated point coordinate is calculated by formula 1：
According to space interpolation theory：On spatial position closer to point, characteristic value more has similitude.Based on this by above-mentioned three
Dihedral center of gravity coordinate imports in model, and nearest triangular mesh, and the interpolated point as corresponding triangle are locked by retrieval；
Interpolation point height has the calculating of formula 2：
By；
It enables：
?:
In above-mentioned formula：Center of gravity (O point) coordinate is (x0, y0, z0)；Triangular apex coordinate is respectively：A (x1, y1, z1), B
(x2, y2, z2), C (x3, y3, z3), wherein Z value is elevation.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art are without wound
The property made labour, which according to the present invention can conceive, makes many modifications and variations.Therefore, all technician in the art
Pass through the available technology of logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Scheme, all should be within the scope of protection determined by the claims.
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| CN113204927A (en) * | 2021-06-08 | 2021-08-03 | 中国水利水电科学研究院 | Different-scale hierarchical nesting simulation method for urban rainfall flood process |
| CN113204927B (en) * | 2021-06-08 | 2021-11-19 | 中国水利水电科学研究院 | Different-scale hierarchical nesting simulation method for urban rainfall flood process |
| CN114444184A (en) * | 2022-01-27 | 2022-05-06 | 西安理工大学 | LID facility optimization design method based on high-precision hydrodynamic model |
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