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ID:34823204
大小:2.87 MB
页数:78页
时间:2019-03-11
《基于gis环境下供水管网故障时决策系统的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、湖南大学硕士学位论文GIS环境下供水管网故障时决策系统的研究姓名:肖化政申请学位级别:硕士专业:市政工程指导教师:许仁荣20030901摘要,洒73231本文对邃理售惠系统(Gis)进行了一黢瞧豹赍绍,重点介绥了6is环凌下城市供永管网故障时的决策方案一优化豹关润方案和水力计算方法,以及ois环境下供水管网故障时决策祭统(GIS—OF)的设计思想、总体结构和荧键技术。GIS—GF系统是利用Maplnfo的二次开发工具MapBasic语裔,运用集成地图的方法(邸通过VisualBasic语言将MapInfo地图窗口集成至《VB疆
2、序中)而开发逡采戆应震程痔。凌系绞孛,裁爱Maplnfo褒管理供农营嚣懿黛凌数据及霞形,供水篱网的属性数据襻储予Access数据蓐中,通过OLE技术将两者连接起来并实现一定的功能。在GIS—GF系统中,其关键是建立优化的关阎方案模块,它鼹实现水力计算模块的基础。根据管嘲的拓扑关系,运用图论中的BFS算法,建立了关阀模块,实瑷了警网鼓障时阕门熬往恁调度。透过低求攫下管网的水力诗黪,来模熬鼓障越秘荚阔螽豹承力工褫。按照软件工程的方法,本文经过系统分析,从当前人工系统出发,提出了61S-6F的结构及功能,Ⅲ并对这些功能模块的察现一一
3、作了说明。关键词;供水管网必阀方案GISMapInfoBFS算法水力计算AbstractGeographicInformationSystem(GIs)isintroducedradicallyinthisthesis.OptimizedschemesofvMveshutdownandhydrodynamicalcalculationscalleddecision—makingprojectunderGISenvironmentastheaccidentofurbanwatersupplynetworkhappenstance
4、arekeyintroduced+Anddesignmethod,wholeconstructionandkeytechnologiesofDecision—makingsystemunderGISenvironmentwhentheaccidentofurbanwatersupplynetworkhappenstance(GIS-GF)areanalyzedatthesametime。GIS*GFareappliedprogramsdevelopedbyMapBasiclanguageofseconddeveloptooli
5、nMapInfo,andbythewayofintegratingmaps,thatistosay,mapwindowinMaplnfoisintegratedintoVisualBasicprogrambyVisualBasiclanguage.Inthissystem,spatialdataandgraphicsofwatersupplynetworkaremanagedbyMaplnfotables+CharacteristicdataofwatersupplynetworkarestoredintheAccessdat
6、abasement.AndtheyareconnectedbyOLEmethodandputintosomeoperations,EstablishmentofoptimizedmoduleofvalveshutdownschemeisthekeypartintheGF—GISsystem,andisthefoundationofrealizinghydrocalculationmodule.ValveshutdownmoduleisestablishedbyBFSalgorithminPlotTheory,basingonp
7、olo垂calrelationshipofwatersupplynetwork,itimplementedoptimizedvalveattemper.Hydrodynamicsstatuswhentheaccidentofurbanwatersupplynetworkhappensoraftervalveshutdownaresimulatebyhydrodynamiccalculationsofnetworkwithlowerhydro—pressure.Aftersystemanalysis,constructionsa
8、ndfunctionsofGF—GISareputforwardaccordingsoftwareellgineeringmethods.Fromnarrationofthe毡p-to—datemannedsystemandthenon,applicationsofthese
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