CN105741045A - Flood risk dynamic analysis and display system and method - Google Patents
Flood risk dynamic analysis and display system and method Download PDFInfo
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Abstract
The invention discloses a flood risk dynamic analysis and display system and a flood risk dynamic analysis and display method, used for establishing flood risk real-time dynamic analysis and display for a user, and relates to the field of computers. According to the method, when the flood risk real-time dynamic analysis and display system is established, a flood risk dynamic analysis sub-system and a flood risk real-time display sub-system are established based on the system, firstly a data model is established, data interaction between different layers can be achieved via a webservice middleware, and then dynamic display to the user is performed via the flood risk real-time display unit based on FLEX. By using the method, the computing efficiency of the existing flood risk map simulation model software is improved, the rapid processing of grid space expression of the model per hours is achieved, and a model data computing scheme management data system is established, thus the real-time online dynamic analysis of the flood risk is achieved by the user, and also can display to the user in real time.
Description
Technical field
The present invention relates to a kind of flood risk dynamically to analyze and display systems and method, belong to field of computer technology.
Background technology
Establishment flood risk mapping is to implement the Scientific Outlook on Development, put into practice new approaches of harnessing the river, implement work of flood prevention from " checking the floods " to " flood management " and change, set up risk management practice, the important foundation carrying out flood risk management supports, and is perspective, strategic, the basic work of country.Actively push forward the establishment of whole nation flood risk mapping, flood control zone Land is developed, strengthen the water-disaster-conscience of the whole people, promoting that flood decision is scientific, treatment in accordance with local conditions takes Countermeasure of Disaster, coordinates human-water relationship, ensure the sustainable and stable development of social stability and national economy, have great importance.
For advancing the authorized strength work of China's flood risk mapping, Ministry of Water Resources starts " whole nation flood risk mapping establishment project pilot (phase) " work for 2008, within 2011, start " whole nation flood risk mapping establishment project pilot (second phase) " work, two phase pilot projects are with regard to the technical standard of China's flood risk mapping establishment, risk analysis on flood software system, the aspects such as flood risk mapping making and management platform have carried out substantial amounts of work, all kinds of flood risk mapping preparing methods have been explored, technical standard and the organization and administration system of flood risk mapping establishment are preliminarily formed.On this basis, within 2013, starting " key area, whole nation flood risk mapping establishment project ", in whole nation each province, each basin perimeter has started flood hazard mapping.Although having carried out substantial amounts of research and discussion in early stage pilot project, there is solid working foundation, but having carried out on a large scale in risk map establishment in the whole nation, however it remains some problems.
For problems such as flood risk mapping establishment and the basis still imperfection of application, practical application is not enough, authorized strength work still inadequate specifications, according to the needs carrying out flood risk mapping establishment, advance flood risk mapping to apply comprehensively, improve further and improve management rules, standards system, technology platform, strengthen flood risk mapping data management and application foundation construction, it is proposed to a kind of flood risk is dynamically analyzed and display systems and method.
Summary of the invention
It is contemplated that can dynamically work out flood risk mapping according to user's request and impact analysis and drawing can be carried out in real time, quickly result is showed user.This method breaches the nature static of the risk map of conventional method establishment, improve flood risk mapping establishment efficiency, simplify conventional compilation process, reach the effect that risk analysis on flood software, impact analysis software and the graphics software that must use in routine being worked out are integrated.Improve the computational efficiency of existing flood risk mapping compilation process analogue model software on the whole, develop efficient grid geographical space and process program, parallel by with flood simulation model software, implementation model is by the quick process of the space expression of hour grid, and set up model data numerical procedure management data system, it is achieved parameter management, model calculate and real-time management of calculated results.
This invention address that the technical scheme that above-mentioned technical problem adopts is as described below: a kind of flood risk is dynamically analyzed and display systems and method.
In first embodiment of the invention, described flood risk is dynamically analyzed and is included the dynamic analyzing subsystem of flood risk and flood risk real-time exhibition subsystem with display systems.
The dynamic analyzing subsystem of described flood risk adopts distributed structure/architecture, by distributed way, the calculating task of flood risk model is decomposed, and cooperate on the whole, the flood scheme condition drive system arranged online according to user realizes on-line analysis and the calculating of described model.
Described flood risk real-time exhibition subsystem is shown to user with graph mode real-time for the two-dimensional result dynamically analyzed by flood risk, provides the user online information browse queries, resource sharing service.
In another embodiment of the present invention, the dynamic analyzing subsystem of described flood risk includes:
Service layer's unit: framework, on hardware foundation, is formed one group of infrastructure service by file or database server, certificate server；
Podium level unit: mainly for flood risk analogue model computing platform and the data accessing engine based on oracle database, described flood risk analogue model computing platform contains flood risk analogue model module and by hour data geography processing module, provides, by the service logic layer unit that is deployed as of both module, the support calculated with data access；
Service logic layer unit: manage assembly by real-time proposals, optimized integration data management, model management of computing, model parameter management, statistics retrieval and thematic charting management, the flood risk simulation of described service logic layer unit and assessment display systems include the U/I interface interacted with user；
Client layer unit: the main secure access providing user to be realized system by the security access mechanism of unified login mode and verification mode.
Preferably, described flood risk analogue model module adopts the pattern of a two dimension coupling to realize the simulation of flood risk simulation, and the pattern of a described two dimension coupling is network of waterways pattern to be combined with two-dimensional model, to be used for simulating whole dam bursting flood risk evolution.
In any of the above-described scheme preferably, described service logic layer unit includes WebService middle layer module, wherein, described WebService middle layer module includes real-time proposals management assembly, basic data management, model management of computing assembly, model parameter management assembly, statistics retrieval component and the thematic charting management big assembly of assembly six, realizes the message transmission of the dynamic analyzing subsystem of described flood risk and described flood risk real-time exhibition subsystem, task scheduling and data interaction by the interaction of described six big assemblies.
In any of the above-described scheme preferably, the simulation of described flood risk includes the flood risk real-time exhibition unit based on FLEX with assessment display systems, and described real-time exhibition unit customizes the Dynamic Display automatically submitting and realizing real-time analysis result to of the retrieval of flood scheme, real-time result of calculation for providing the user user.
In any of the above-described scheme preferably, the dynamic analyzing subsystem of described flood risk adopts automatic dump and Restoration Mechanism, multilevel security control mechanism, the user accesses data storehouse licensing scheme of data, record (document) accesses level of confidentiality controls the secure access of the system that realizes.
In another embodiment of the present invention, a kind of flood risk is dynamically analyzed and methods of exhibiting, and the method comprises the steps:
(1) user arranges crevasse and flood risk model parameter by the dynamic analyzing subsystem of flood risk；
(2) call WebService middleware by B/S end, described parameter is preserved to data base；
(3) described WebService middleware calls and starts Grid square geography processing module；Described Grid square processing module reads described parameter from described data base, described parameter is carried out by a hour process, and the data after processing is deposited in data base；
(4) data in described data base are polled by B/S end, and at described flood risk real-time exhibition subsystem, the data after described process are carried out Dynamic Display.
Described flood risk model adopts a two dimension CGCM to realize, wherein,
(1.1) when configuring upstream and downstream type coupled interface, by greatest iteration calculation times, flow error control coefrficient two indices, the iterative computation at coupled interface place being controlled, wherein, described flow error control coefrficient is provided with maximum and minima；
(1.2) when configuring lateral type coupled interface, configure according between two often adjacent sections；
(1.3) when configuring dyke and crevasse configuration thereof, if elevation columns is 1, crevasse development time is set to 0；If elevation columns is N (N > 2), then crevasse development time number is N-2.
Described WebService middleware, for realizing the data interaction on system front end and backstage, when calling this WebService middleware, specifically includes:
(2.1) described WebService middleware is called in B/S front end, and the calculating service of described WebService middleware starts automatically；
(2.2), after starting, the loading condition according to current server, notice front end user calculates task state in which, and described state includes waiting, run and terminating；
(2.3) perform calculating the corresponding command operation of multiplexed transport according to the parameter of user's input；
(2.4), after having operated, described calculating service is automatically switched off, and discharges resource.
Described by hour process adopt be in harmonious proportion anti-distance weighting (AIDW) interpolation method realize image interpolation.
Described Dynamic Display includes:
(4.1) model parameter according to user's input, carries out real-time exhibition to the risk elements of model output, including specify section discharge process and water level, along journey water surface curve, basis risk thematic map, flood process；
(4.2) user can carry out retrieving and browsing according to result of calculation in real time, is realized the playback of the process of flooding calculated by map interactive mode；
(4.3) user is by being the playback by the flood scheme of customization being checked, browse and flooded process.
Technical scheme can reach following beneficial effect: mainly through distributed risk analysis on flood model in technological means, and the exploitation to the efficient exchange capacity of risk analysis on flood result data, it is achieved online real-time flood assay ability.Flood risk show subsystem be user oriented show flood risk analyze in real time and flood influence analyze result a platform.User can the impact analysis of all kinds of flood schemes and correspondence thereof and charting results in real-time online inquiry, application platform by accessing this subsystem.
Accompanying drawing explanation
Fig. 1 is the level Organization Chart that the flood risk according to the present invention dynamically analyzes the preferred embodiment with display systems；
Fig. 2 is the frame diagram of the preferred embodiment according to the dynamic analyzing subsystem of the flood risk of the present invention；
Fig. 3 is the frame diagram of a preferred embodiment of the flood risk real-time exhibition subsystem according to the present invention；
Fig. 4 (a) is the unitary analysis figure of the preferred embodiment according to the dynamic analyzing subsystem of the flood risk of the present invention；
The parameter that Fig. 4 (b) is the preferred embodiment according to the dynamic analyzing subsystem of the flood risk of the present invention arranges figure；
Fig. 4 (c) is the live effect figure of the preferred embodiment according to the dynamic analyzing subsystem of the flood risk of the present invention；
Fig. 5 is the surface chart of a preferred embodiment of the flood risk real-time exhibition subsystem according to the present invention；
Detailed description of the invention
Below in conjunction with specification drawings and specific embodiments, the invention will be further described.
Referring to accompanying drawing 1, in first embodiment of the present invention, provide firstly a kind of flood risk and dynamically analyze and display systems.This system includes the dynamic analyzing subsystem of flood risk and flood risk real-time exhibition subsystem.
Wherein, the dynamic analyzing subsystem of described flood risk adopts distributed structure/architecture, by distributed way, the calculating task of flood risk model being decomposed, and cooperate on the whole, the flood scheme condition drive system arranged online according to user realizes on-line analysis and the calculating of described model.
Described flood risk real-time exhibition subsystem is shown to user with graph mode real-time for the two-dimensional result dynamically analyzed by flood risk, provides the user online information browse queries, resource sharing service.
Referring to accompanying drawing 2, the dynamic analyzing subsystem of flood risk is divided into service layer's unit, podium level unit, service logic layer unit and client layer unit from down to up.
Service layer's unit: framework, on hardware foundation, is formed one group of infrastructure service by file or database server, certificate server；
Podium level unit: mainly for flood risk analogue model computing platform and the data accessing engine based on oracle database, described flood risk analogue model computing platform contains flood risk analogue model module and by hour data geography processing module, provides, by the service logic layer unit that is deployed as of both module, the support calculated with data access；
Service logic layer unit: manage assembly by real-time proposals, optimized integration data management, model management of computing, model parameter management, statistics retrieval and thematic charting management, the flood risk simulation of described service logic layer unit and assessment display systems include the U/I interface interacted with user；
Client layer unit: the main secure access providing user to be realized system by the security access mechanism of unified login mode and verification mode.
In the embodiment being more highly preferred to, flood risk is dynamically analyzed and is first carried out choosing of model with display systems: in the scheme of the application, adopts the pattern of a two dimension coupling to realize the simulation of flood risk simulation.By simulation reconstruction flood generation evolutionary process, it is provided that the hydrodynamics key message needed for ANALYSIS ON FLOOD DISASTERS, such as numerical informations such as flood peak position, maximum depth of the water submerging, flow velocity, flows.
One two dimension CGCM is network of waterways pattern to be combined with two-dimensional model, to be used for simulating whole dam bursting flood risk evolution.One-dimensional network of waterways pattern provides river level and flow rate information, and when water level reaches marginal value, dam break occurs, and flood enters flood diversion zone, and flood discharge flow information effluent net analog result calculates, and computation schema is divided into two kinds: lateral type couples, and upstream and downstream type couples.Controlling the water level parameters that dam break occurs, dykes and dams shape can be set by the user.One two dimension risk analysis on flood model mainly includes the network of waterways, one-dimensional river course hydrodynamic model, and two dimension hydrodynamic model simulation and a two dimension couple.
Network of waterways flow simulating selects one-dimensional Saint-venant Equations as governing equation, wherein comprises two equations, the equation of continuity of current and momentum balance equation, and expression formula is as follows:
In upper two formulas, Q is flow, m3/s；Z is water level, m；Q is the side inbound traffics in unit water body length, m2/s；A is discharge section area, m2；R is hydraulic radius, m；N is roughness；A is momentum correction factor, generally can be taken as 1.0；G is acceleration of gravity, takes 9.8m/s2。
In upper two formulas, Q is flow, m3/s；Z is water level, m；Q is the side inbound traffics in unit water body length, m2/s；A is discharge section area, m2；R is hydraulic radius, m；N is roughness；A is momentum correction factor, generally can be taken as 1.0；G is acceleration of gravity, takes 9.8m/s2。
Equation (2.1) and (2.2) are two first step of non linear equation groups, it is impossible to consider its analytic solutions, can only adopt Numerical Methods Solve.Numerical solution first has to equation discretization, and common method has explicit form and implied format discrete.Explicit form is relatively big to the restriction of time stepping method step-length, and whole lattice points a step just cannot be produced impact by boundary information change, are therefore not suitable for solving network of waterways problem.The discrete relational expression providing neighboring lattice points information future time of implicit schemes, the change of boundary information can have influence on whole lattice point in a step, is therefore suitable for simulating river problem.
Adopt Preissmann implicit schemes to carry out discrete to upper two formulas, solve territory [xj,xj+1]×[tn,tn+1] function carries out Taylor expansion by certain point in space, takes single order and blocks, and so can obtain the relation of the functional value of this point and local derviation numerical value and surrounding four point function value.In simple terms, it is determined that the little local derviation numerical value solving certain point in territory, employing is average weighted method, and the size of weight can freely set.Here, the weight of direction in space is taken as 1/2, for guaranteeing computational stability time orientation value 1/2 < θ < 1.
Two dimension hydrodynamic model is still that the hot issue of research circle, wherein major problem is that and how to construct suitable reconstructing method, enabling process wet-dry boundaries problem with being certainly in harmony.This model adopts a kind of simple non-negative depth of water reconstructing method so that the depth of water flow after reconstruct has stability at wet-dry boundaries place and ensures the conservation of mass.For source item, slope is turned to the flux term on border so that deal with simpler convenience.Adopt the flux of Roe method construct boundary, so can effectively catch interruption.The optional single order precision of time stepping method and second order accuracy.Operator splitting method is adopted to process resistance items.PRELIMINARY RESULTS shows, model has good hydrostatic simulated performance.
The conservation form of two-dimensional shallow water equation is as follows,
In above formula, t is the time, x, and y is space coordinates；Q is conservation variable, and f and g represents conserved quantity flux on x, y direction, and S is source item, it does not have consider the Coriolis force item that causes of earth rotation, viscosity term that turbulent flow causes and wind-induced shear stress item.Source item includes slope, ground source item and the frictional resistance item that accident of terrain causes.These vector concrete forms are,
In formula, h is the depth of water, and u isxThe average speed in direction, v is the average speed in y direction, zbIt it is ground elevation；qxWith qyIt is x direction and the flux gradient in y direction, qxEqual to uh, qyAcceleration of gravity, 9.8m/s is represented equal to vh, g2；CfIt is surface roughness coefficient, Manning coefficient n and depth of water h controls, Cf=gn2/h1/3。
The conventional Finite Volume Method of two dimension Hydrodynamic Simulation, therefore to carry out volume integral by above formula
Application Gauss theorem, above formula can be written as
In above formula, Ω and Γ represents control volume unit and elementary boundary respectively, and under two-dimensional case, control volume unit is polygon, generally takes triangle or tetragon is calculated, and we are taken as triangle here.Each unit i indicates, n is the outer normal direction from elementary boundary, and its component is (nx,ny), the flux stream of boundary can be written as
After river course simulation and two dimension flood simulation can carry out respectively, key is how to couple together two models, the namely exchange of data.River Embankment connects with flood diversion zone border, and crevasse is once occur, and river course will provide current value for flood diversion zone border, and inside and outside accurate description crevasse, flow information of water is the key that model connects alternately.
Concrete flux exchange formula is as follows:
Wherein, h1=max (Zu,Zd)-Zb；h2=min (Zu,Zd)-Zb, q is flow.
One two dimension coupling flood risk analogue model software is mainly based upon file basis and realizes.Adopt Fortran exploitation.Adopting Fortran exploitation is that the two dimension coupling model for scientific algorithm develops more convenient.
One two dimension connection solves computation schema and includes upstream and downstream type interface configurations, the configuration of lateral type coupled interface, dyke and crevasse configuration thereof, and export result configuration file, finally make output result explanation, wherein, by linker1 file configuration upstream and downstream type coupled interface, by linker2 file configuration lateral type coupled interface, by dyke file configuration dyke and crevasse information thereof, carried out the result of calculation output configuration of coupled interface by linker.out.setting file.
One～two dimension connection solves result of calculation and includes one-dimensional model result of calculation, two dimensional model result of calculation and coupled interface result of calculation.Wherein, one-dimensional model result of calculation is saved in OUT1D file；Two dimensional model result of calculation is saved in OUT2D file；Coupled interface result of calculation is saved in OUT12D file.
Coupled interface result of calculation includes idname.linker1.txt, idname.linker2.txt, Warning12D.txt.Wherein, when Warning12D.txt have recorded upstream and downstream type coupled interface iterative computation, the relevant of the not met flow condition of convergence calculates information in real time；Idname.linker1.txt have recorded the water level of i-th d upstream and downstream type coupled interface (name is called name), discharge process, and flow is flowed to one-dimensional more than 0 expression by two dimension, and flow represents less than 0 by one-dimensional flow direction two dimension；Idname.linker2.txt have recorded the i-th d the upstream section water level of side-coupled interface combinations (name is called name), downstream section water level, upstream section flow, downstream section flow, flood diversion discharge process, flood diversion flow represents that more than 0 flood diversion flow is flowed to one-dimensional less than 0 expression by two dimension by one-dimensional flow direction two dimension.
Preferably, a conventional two dimension coupling hydrodynamic analysis model of selection carries out flood and the process simulation of development occurs, and the model method of selection is also flood risk simulation and the universal model analyzed, and has good practicality.Main employing of weighing for software efficiency processes the ability of grid and for carrying out the exploitation of model, improvement and perfect based on the data-handling efficiency two indices at 1 hour flood interval.
Make full use of the interval that flood risk analogue model software calculates based on flood interval data output in 1 hour, according to front end, data are represented requirement in real time be carried out, process and compression, big data quantity and front end processing capabilities are balanced by this software, complete on backstage thus playing a large amount of calculating of complexity, and data are carried out front and back end data exchange by cleaning, compression process.
Process software by hour data geography and mainly "current" model is calculated the geographical processing procedure of data.It is mainly concerned with data access (DataAccess), task management (TaskManager), two dimension coupling flood risk analogue model (HydroMPM) and a GeoProcessor in by hour data geography processing procedure.Mainly the image of the simulation flood development of front end is put into backstage in geographical processing procedure to generate.Owing to grid and node are discontinuous so main link is how to carry out image interpolation in geography processes on information representation.Image interpolation mainly comprises two aspects, is respectively as follows: border and asks calculation and the characteristic pattern of border vital QI flowing in the body against the natural law net and node is interpolated.On interpolation algorithm, we mainly choose and achieve the anti-distance weighting interpolation method of mediation.The new method of follow-up employing is by depending on interpolation method performance in real-time flood risk assessment.
Being in harmonious proportion anti-distance weighting algorithm, concrete formula is as follows:
In formula, Z, Zi, di, n, the definition of p is identical with IDW；I is the sequence sequence number (putting in order as by near extremely remote) that the sampling point in interpolation search neighborhood is far and near from interpolation point；kiBeing the orientation mediation weight coefficient of sequence number i sampling point, it represents the comprehensive effect that sequence number i sampling point is covered by other sampling points.Because the sampling point that sequence number is 1 is nearest from interpolation point, any sampling point covers impact all without it is had, therefore sets k1=1.sinpθijIt it is the sequence number i sampling point calculating formula by sequence number j sampling point shield coverage
In formula, 1≤j≤i-1, θijIt it is the angle (acute angle or right angle) of sequence number i, j two sampling point line and its center line (crossing interpolation point)；aijIt it is sequence number i, j two line angle of sampling point and interpolation point.According to the basic assumption of AIDW, work as aijDuring >=360 °/n, sequence number sampling point without covering impact, therefore is specified now sin by sequence number j sampling pointpθijValue is 1.
The application service layer of sing on web Service mainly includes real-time proposals management assembly, basic data management, model management of computing assembly, model parameter management assembly, statistics retrieval component and the thematic charting management big assembly of assembly six and constitutes.The message transmission of the dynamic analyzing subsystem of described flood risk and described flood risk real-time exhibition subsystem, task scheduling and data interaction is realized by the interaction of described six big assemblies
The real-time proposals management flood risk mapping UI interface that is mainly used to connect ask and forwards requests to the calculating of flood risk graph model.Real-time proposals management, as the circulation series connection person of whole system, plays the command function of core in systems.
Crevasse management mainly realizes the management to crevasse positional information.Specifically include that
(1) automatically obtain the crevasse node coordinate information along river course according to crevasse position and crevasse length information, and form the crevasse node table that model may identify which；
(2) upstream and downstream section is automatically identified according to crevasse position and crevasse length；
(3) generate the different shape of crevasse according to crevasse evolution (t1, t2, t3, t4 ...) and crevasse node, support the formation and development of the different crevasse shape such as rectangle, trapezoidal, triangle crevasse.
Monitoring point management mainly includes the setting of a peacekeeping two dimension grid monitoring point.Monitoring point arranges and monitoring point coordinate is delivered to flood risk mapping thus being exported by model by project management.Monitoring point can arrange multiple.Detailed process is:
(1) monitoring point information is stored in monitoring point (MonitorPoint) data base by project management by flood risk mapping.
(2) scheme Boot Model scheduler program, model reads monitoring point information to by scheme ID, then again model by hour generating.
The management similar monitoring point management of monitoring section.Monitoring section has scenario manager to be numbered to be stored in MonitorSection.Concrete grammar is consistent with monitoring point management.
Dam break region, flood diversion zone are mainly carried out grid data and process by grid management.Specifically include that
(1) Grid square vector quantization.Grid square is the basic data of model analysis.Grid square is after carrying out grid through special grid handling implement, it is necessary to Grid square is carried out vectorized process, is processed into the textual grid file that model may identify which simultaneously, calculates to allow model be simulated.
(2) Classification Management of Grid square.The density of grid is directly connected to the efficiency of simulation, and the grid of different resolution is realized data management by this project, with the selection according to user to realizing the preservation to different grid and quoting.
(3) data management of wire grid and polygonal mesh and mutually conversion.Wire grid and polygonal mesh are all the basic background data of current system, all will participate in system data and calculate and information retrieval aspect.
Grid data boundary extracts by scanning Grid square boundary condition.It it is the plaid matching networking flood discharge region most exact boundary that carries out drawing a circle to approve.Grid data boundary is polygon data, it is possible to be made up of multiple polygon datas.
Wherein, bank line is the basic background data of project, directly puts in storage as initialization data.River cross-section is the critical data of project.For convenience of the simulation of system real-time flood.Node data, except including network computation data set, also includes the node data collection along riverbank.This two data set all based on background use, participate in real-time flood simulation calculate in.
Further, described flood risk is dynamically analyzed and is included the flood risk real-time exhibition unit based on FLEX with display systems, and described real-time exhibition unit customizes the Dynamic Display automatically submitting and realizing real-time analysis result to of the retrieval of flood scheme, real-time result of calculation for providing the user user.
Further, the dynamic analyzing subsystem of flood risk adopts automatic dump and Restoration Mechanism, multilevel security control mechanism, the user accesses data storehouse licensing scheme of data, record (document) accesses level of confidentiality controls the secure access of the system that realizes.
It is exactly with real-time flood risk program for relying on that flood risk dynamically analyzes a vital task with real-time exhibition system Construction, specification is worked out in conjunction with flood risk mapping, involved Various types of data resource is integrated, to form a unification, flood risk chart database complete, specification.This data base includes all kinds of spatial informations and the non-spatial information such as grid, grid base map, and corresponding metadata describes information, possesses and provides normative and reasonable data for flood risk mapping query analysis system.
Referring to Fig. 3, a kind of flood risk provided by the invention dynamically analyzes the frame diagram of the flood risk real-time exhibition subsystem with display systems,
Flood risk real-time exhibition subsystem includes professional knowledge module, information bulletin module, map service module, application case module, risk map achievement module, data download module, technical service module, user management module, native system is the extension of whole nation flood risk mapping management platform, purpose is that Service Source all of on platform is supplied to the user of each basin committee flood risk mapping, Service Source is retrieved for all users, apply for, register, and Resource Exchange.
System accesses user and is divided into nonregistered user, registration user and administrator.User's management is internal data mainly for intrasystem Map Services and part downloaded resources, unsuitable Full-open, it is necessary to the user with corresponding authority can check and download.Registration user inputs user name password by logentry, just can check online Service Source and download the technical data needed after carrying out purview certification.System manager user is responsible for flood risk mapping management and user's examination & verification of website.Nonregistered user can access other functions except Map Services and download open source information.
The user account registration of login system.Account Logon information and the user identity data such as the username and password of input registration Real Name, user name, password, mailbox, phone and Online Map Service Source.New registration account need flood risk mapping manager examination & verification by after could use.The mailbox that auditing result is filled in when can be sent to registration by mail.Require that the user of registration observes " terms of service " and " user's notice " of Resource service system.Wherein, this system modules has following function
Described user management module is used for providing the user login platform, platform is had corresponding use and administration authority by the type according to user, user profile can be edited, revised by user, the replacement of password, described user is divided into nonregistered user, registration user and administrator, and described user only just can check the information such as online Service Source and downloaded data after obtaining purview certification.
Described professional knowledge module is for providing the user relevant rudimentary knowledge, the browsing of laws and regulations information, down operation, and information bulletin can be managed, issues, edits and delete by manager；
Important news that described information bulletin module is issued for providing the user bulletin, bulletin, the browsing of multidate information, down operation, provide the user the news information list that water conservancy industry is relevant, show all water conservancy highlights, and support to search for title generally；
Described map service module is used for the service that provides the user and uses, services preview, service registry, service request, service retrieval, adopting arcgis map to show each risk point distribution situation, the relevant information of wherein said risk includes: risk point title, affiliated basin, affiliated province, scheme number.
Described application case module is used for providing the user application case and retrieves, and the operation such as checks；
Described risk map achievement module is used for providing the user basin, risk point, scheme, wherein, described basin is divided into the Yangtze river basin, Taihu Lake basin, the Huanghe valley, Pearl River Delta, Haihe basin, Song-liao rives basin and Basin of Huaihe River, and described scheme is divided into: land use planning, flood control and disaster reduction, flood insurance；Described flood is divided into: rivers and lakes flood, flood storage and detention basin flood, Reservoir Flood, city flood；Described risk map is divided into: method for flood submerged area figure, flood inundation on tracks fathogram, flood inundation on tracks last figure and flood velocity figure.
Described data download module is for providing the user the download of software resource, technical specification resource；
Described technical service module provides the user relevant knowledge, training material, data collect, experts database, service guide.
In another embodiment of the present invention, the present invention provides the method flow diagram that a kind of flood risk is dynamically analyzed and shown, wherein, comprises the steps:
(1) user arranges crevasse and flood risk model parameter by the dynamic analyzing subsystem of flood risk；
(2) call WebService middleware by B/S end, described parameter is preserved to data base；
(3) described WebService middleware calls and starts Grid square geography processing module；Described Grid square processing module reads described parameter from described data base, described parameter is carried out by a hour process, and the data after processing is deposited in data base；
(4) data in described data base are polled by B/S end, and at described flood risk real-time exhibition subsystem, the data after described process are carried out Dynamic Display.
Further, described flood risk model adopts a two dimension CGCM to realize, wherein,
(1.1) when configuring upstream and downstream type coupled interface, by greatest iteration calculation times, flow error control coefrficient two indices, the iterative computation at coupled interface place being controlled, wherein, described flow error control coefrficient is provided with maximum and minima；
(1.2) when configuring lateral type coupled interface, configure according between two often adjacent sections；
(1.3) when configuring dyke and crevasse configuration thereof, if elevation columns is 1, crevasse development time is set to 0；If elevation columns is N (N > 2), then crevasse development time number is N-2.
Further, described WebService middleware, for realizing the data interaction on system front end and backstage, when calling this WebService middleware, specifically includes:
(2.1) described WebService middleware is called in B/S front end, and the calculating service of described WebService middleware starts automatically；
(2.2), after starting, the loading condition according to current server, notice front end user calculates task state in which, and described state includes waiting, run and terminating；
(2.3) perform calculating the corresponding command operation of multiplexed transport according to the parameter of user's input；
(2.4), after having operated, described calculating service is automatically switched off, and discharges resource.
Preferably, described Dynamic Display includes:
(4.1) model parameter according to user's input, carries out real-time exhibition to the risk elements of model output, including specify section discharge process and water level, along journey water surface curve, basis risk thematic map, flood process；
(4.2) user can carry out retrieving and browsing according to result of calculation in real time, is realized the playback of the process of flooding calculated by map interactive mode；
(4.3) user is by being the playback by the flood scheme of customization being checked, browse and flooded process.
(4.4) one-dimension information and the two-dimensional signal of flood risk model are exported in real time, wherein,
Described one-dimension information includes: crevasse discharge process, section discharge process, single section water level, section are along Cheng Shuiwei.
Described two-dimensional signal includes: clicks section on map, shows section discharge curve, SEA LEVEL VARIATION graph；Result on two-dimensional surface, selects to show not depth of the water submerging figure, flow velocity figure in the same time according to time shaft.
Technical scheme can reach following beneficial effect: mainly through distributed risk analysis on flood model in technological means, and the exploitation to the efficient exchange capacity of risk analysis on flood result data, it is achieved online real-time flood assay ability.Flood risk show subsystem be user oriented show flood risk analyze in real time and flood influence analyze result a platform.User can the impact analysis of all kinds of flood schemes and correspondence thereof and charting results in real-time online inquiry, application platform by accessing this subsystem.
Claims (10)
1. flood risk is dynamically analyzed and a display systems, and described system includes the dynamic analyzing subsystem of flood risk and flood risk real-time exhibition subsystem；It is characterized in that:
The dynamic analyzing subsystem of described flood risk adopts distributed structure/architecture, by distributed way, the calculating task of flood risk model is decomposed, and cooperate on the whole, the flood scheme condition drive system arranged online according to user realizes on-line analysis and the calculating of described model；
Described flood risk real-time exhibition subsystem is shown to user with graph mode real-time for the two-dimensional result dynamically analyzed by flood risk, provides the user online information browse queries, resource sharing service.
2. flood risk according to claim 1 is dynamically analyzed and display systems, it is characterised in that: the dynamic analyzing subsystem of described flood risk includes:
Service layer's unit: framework, on hardware foundation, is formed one group of infrastructure service by file or database server, certificate server；
Podium level unit: mainly for flood risk analogue model computing platform and the data accessing engine based on oracle database, described flood risk analogue model computing platform contains flood risk analogue model module and by hour data geography processing module, provides, by the service logic layer unit that is deployed as of both module, the support calculated with data access；
Service logic layer unit: manage assembly by real-time proposals, optimized integration data management, model management of computing, model parameter management, statistics retrieval and thematic charting management, the flood risk simulation of described service logic layer unit and assessment display systems include the U/I interface interacted with user；
Client layer unit: the main secure access providing user to be realized system by the security access mechanism of unified login mode and verification mode.
3. flood risk according to claim 2 is dynamically analyzed and display systems, it is characterized in that: the described geographical process by hour data geography processing module to the calculating data of described flood risk model, wherein, adopting the anti-distance weighting interpolation method of mediation at described Data processing, its formula is:
In formula, Z is interpolation point estimated value；Zi is i-th sample point observation；Di is the Euclidean distance between interpolation point and i-th sample point；N is the number of samples for estimating interpolation point value；P is power exponent；I is the sequence sequence number (putting in order as by near extremely remote) that the sampling point in interpolation search neighborhood is far and near from interpolation point；Being the orientation mediation weight coefficient of sequence number i sampling point, it represents the comprehensive effect that sequence number i sampling point is covered by other sampling points；Because the sampling point that sequence number is 1 is nearest from interpolation point, any sampling point covers impact all without it is had, therefore sets；It it is the sequence number i sampling point calculating formula by sequence number j sampling point shield coverage
In formula,It it is the angle (acute angle or right angle) of sequence number i, j two sampling point line and its center line (crossing interpolation point)；It is sequence number i, j two line angle of sampling point and interpolation point, according to the basic assumption of AIDW, whenTime, sequence number j sampling point on sequence number sampling point without covering impact, therefore regulation nowValue is 1.
4. flood risk according to claim 2 is dynamically analyzed and display systems, it is characterized in that: described service logic layer unit includes WebService middle layer module, wherein, described WebService middle layer module includes real-time proposals management assembly, basic data management, model management of computing assembly, model parameter management assembly, statistics retrieval component and the thematic charting management big assembly of assembly six, the message transmission of the dynamic analyzing subsystem of described flood risk and described flood risk real-time exhibition subsystem is realized by the interaction of described six big assemblies, task scheduling and data interaction.
5. flood risk according to claim 2 is dynamically analyzed and display systems, it is characterized in that: the simulation of described flood risk includes flood risk real-time exhibition unit with assessment display systems, and described real-time exhibition unit customizes the Dynamic Display automatically submitting and realizing real-time analysis result to of the retrieval of flood scheme, real-time result of calculation for providing the user user.
6. flood risk according to claim 2 is dynamically analyzed and display systems, it is characterised in that: the dynamic analyzing subsystem of described flood risk adopts the automatic dump of data and Restoration Mechanism, multilevel security control mechanism, user accesses data storehouse licensing scheme, record accessing level of confidentiality controls the secure access of the system that realizes.
7. flood risk is dynamically analyzed and a methods of exhibiting, and the method comprises the steps:
(1) user arranges crevasse and flood risk model parameter by the dynamic analyzing subsystem of flood risk；
(2) call WebService middleware by B/S end, described parameter is preserved to data base；
(3) described WebService middleware calls and starts Grid square geography processing module；Described Grid square processing module reads described parameter from described data base, described parameter is carried out by a hour process, and the data after processing is deposited in data base；
(4) data in described data base are polled by B/S end, and at described flood risk real-time exhibition subsystem, the data after described process are carried out Dynamic Display.
8. flood risk according to claim 7 is dynamically analyzed and methods of exhibiting, it is characterised in that described flood risk model adopts a two dimension CGCM to realize, wherein,
(1.1) when configuring upstream and downstream type coupled interface, by greatest iteration calculation times, flow error control coefrficient two indices, the iterative computation at coupled interface place being controlled, wherein, described flow error control coefrficient is provided with maximum and minima；
(1.2) when configuring lateral type coupled interface, configure according between two often adjacent sections；
(1.3) when configuring dyke and crevasse configuration thereof, if elevation columns is 1, crevasse development time is set to 0；If elevation columns is N(N > 2), then crevasse development time number is N-2.
9. flood risk according to claim 7 is dynamically analyzed and methods of exhibiting, it is characterised in that described WebService middleware, for realizing the data interaction on system front end and backstage, when calling this WebService middleware, specifically includes:
(2.1) described WebService middleware is called in B/S front end, and the calculating service of described WebService middleware starts automatically；
(2.2), after starting, the loading condition according to current server, notice front end user calculates task state in which, and described state includes waiting, run and terminating；
(2.3) perform calculating the corresponding command operation of multiplexed transport according to the parameter of user's input；
(2.4), after having operated, described calculating service is automatically switched off, and discharges resource.
10. flood risk according to claim 7 is dynamically analyzed and methods of exhibiting, it is characterized in that, described by hour process adopt be in harmonious proportion anti-distance weighting (AIDW) interpolation method realize image interpolation, wherein, described mediation anti-distance weighting (AIDW) interpolation algorithm formula is:
In formula, Z is interpolation point estimated value；Zi is i-th sample point observation；Di is the Euclidean distance between interpolation point and i-th sample point；N is the number of samples for estimating interpolation point value；P is power exponent；I is the sequence sequence number (putting in order as by near extremely remote) that the sampling point in interpolation search neighborhood is far and near from interpolation point；Being the orientation mediation weight coefficient of sequence number i sampling point, it represents the comprehensive effect that sequence number i sampling point is covered by other sampling points；Because the sampling point that sequence number is 1 is nearest from interpolation point, any sampling point covers impact all without it is had, therefore sets；It it is the sequence number i sampling point calculating formula by sequence number j sampling point shield coverage
In formula,It it is the angle (acute angle or right angle) of sequence number i, j two sampling point line and its center line (crossing interpolation point)；It is sequence number i, j two line angle of sampling point and interpolation point, according to the basic assumption of AIDW, whenTime, sequence number j sampling point on sequence number sampling point without covering impact, therefore regulation nowValue is 1.
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