发布时间 : 星期日 文章ARCGIS最短路径 VB代码更新完毕开始阅读78db131c0a4e767f5acfa1c7aa00b52acfc79cf0
毕业设计（论文）专用纸参考文献[1]张烜.GIS中的最短路径分析与实现.辽宁师范大学.2007[2]肖海平、陈兰兰、彭涛.基亏ArcGISEngine的城市道路最短路径分析方法研究.江西理工大学.2008[3]朱仕杰、南卓铜.基于ArcEngine的GIS软件框架建设.兰州大学.2006[4]李春立，曾致远，徐学军.基于ArcGISEngine的车辆监控系统.华中科技大学.2006[5]李志发，邵伟民，卢志强.基于ArcGISEngine的城市公交换乘系统.上海大学.2010[6]安永值.基于地理信息系统的最优路径算法与实现.南京理工大学.2006[7]杨瑜君.GIS中最短路径问题的研究与实现.四川大学.2006[8]张连蓬、刘国林、江涛、李云岭、季民.GIS路径寻优的方向优先搜索法.山东科技大学.2003[9]刘云翔.最短路径分析及GIS/GPS集成技术研究.国防科学技术大学.2002[10]戴文洲.交通网络中最短路径算法研究.重庆大学.2004[11]陈波、杨阳、郑文军.一种基于道路网分层的最短路径算法.解放军信息工程大学.2006[12]陈箫枫、蔡秀云、唐德强.最短路径算法分析及其在公交查询的应用.华南理工大学.2001[13]林卓然.VB语言程序设计.电子工业出版社.200933毕业设计（论文）专用纸英文原文：
OptimumRouteofPipelineusingArcGIS
BaderAbdulazizAlSamariMohammedAyubSagerMasoudAlYamiSaudiAramco,DhahranRoutingproblemsarethoseinwhichalocationorrouteischosenforitssuperioritytoothersasitmayminimizeacostormaximizeabenefit.AdvancementinprocessingDigitalElevationModel(DEM)providesfornewtechnologicaldevelopmentandanincreasedcapabilitytoaccomplishoptimumroute.Aerialphotographyandgeospatialinformationsystemsrepresentopportunitiesforcostreduction.DEMwhencombinedwithGeospatialInformationsystems(GIS)bringnewapproachestoroutingandwouldsimulatetheenvironment.Theenvironmentalsimulationwouldhelpindeterminingthebestpossibleroute,dependingonneed-basis,astheshortestorleast-costpathwithoutgoingtothefield.Thissimulationalsoprovidesaverticalprofilefortherouteselectedforanalyzing.Theoptimumlocationandpipelineroutegeneratedisthebestpossiblelocation,asefficientaspossible,savingresources,timeandcost.ThispaperwoulddealwithonesuchproblemoffindingtheleastcostpathusingGIS,andDEM.Introduction:
Planningapipelinerouteforconnectingbetweentwonodesinthepetroleumindustryiscomplex,costlyandtimeconsumingbasedondistanceandterrain.Thedistancebetweensourceanddestinationofpipelinesrangesovermanymilesofvaryingterrain,andthisterrainismostlyfoundinremoteareas.Pipelinescarryingpetroleumproductsfordistancesarecapital-intensiveprojects.Withthefastdevelopmentenvironmentintheoilandgasindustry,andwiththeincreaseinconsumptionoftheseproducts,theneedforanoptimumroutebecomesmoreimportantasthiscanreduceahuge34毕业设计（论文）专用纸operationalcost.Planningfortheoptimumrouterequiresanextensiveevaluationprocesstoidentifythebestpossiblepath.ThispathmustcomplywiththerequirementsoftheCompanyintermsofsafetyandcost.TheimportanceofdecisionsinpipelineconstructionisreflectedbytheGeographicInformationSystem(GIS)technology,integratedintothedecisionsupportsystem.TheArcGISspatialanalystprovidesabroadrangeofpowerfulspatialmodelingandanalysisfeatures,whereuserscancreate,query,mapandanalyzecellbasedrasterdata;performintegratedraster-vectoranalysis,derivenewinformationfromexistingdata;queryinformationacrossmultipledatalayers;andfullyintegratecell-basedrasterdatawithtraditionalvectordatasources.UsingArcGISspatialanalyst,GISuserscanalsoderiveinformationaboutgeospatialdatasuchasterrainanalysis,spatialrelationships,suitablelocations,andtheaccumulativecostofroutingfromonepointtoanother.ArcGISspatialanalystintegratesreal-worldvariablessuchaselevationintothegeospatialenvironmenttohelpsolvecomplexproblems.ArcGISspatialanalystprovidesnewfunctionalityforadvancedcustomizationandinteroperability.Thispapertriestopresentsomeoftheseaspectsbyconsideringoneofthetoughestfields,Shaybah,situatedinSaudiArabia.StudyArea:
ShaybahisaremoteareainSaudiArabia,about900kilometersfromDhahranintheRub’al-khali.Thosewhohavebeenthereagreethatthelocation’stopographyandclimatemaketheareabothchallengingandinteresting.Saltflats,calledSabkhas,ofabouttwosquarekilometerseach,areinterspersedamongsanddunesupto200metershigh.Ifwetakeanaerialview,theSabkhasandduneslookslikecratersofvolcanoes.Thestrandeddunes35毕业设计（论文）专用纸sequencecoveringthewholeShaybahfieldmakeslinkingtheproductionoilpipelinesthroughoutthesedunesanewchallengeforfacilitiesengineers.TheyneedagradingslopebetweentheseSabkhastoreducelargesluggingandavoidingbackpressure.ThelongpipelinesurroundingSabkhaswilldecreasethepressureandcostwhileatthesametimeitwillrequireadditionalpumps,suchasElectricalSubmersiblePumps(ESPs),andusingmachinestopenetratethedunes(HorizontalDirectionalDrilling).Fig1:ShaybahFieldLeastCostPathAnalysis:
Theamountofterrainundulationalongthepipelineisameasureofseveralcoststhroughoutthepipelinelifecycle;coststhatareevidencedintermsof“cutandfill,”operations,thetypeofequipmentused,geotechnicalissuesandotherthings.Theshortpathrouteforthepipelineisacomplexsystem.Itrelatescloselytogeographiclocation,terrain,elevationandotherfactors.Therewillbemanydifferenttypesofdatainvolved.ThereisaneedformoreusageofrasterdatasettoGIS.Fortheleastcostpathanalysis,cellsinrastersareevaluatedandthepathmovestothecellwithsmallestaccumulatedvalue.Theprocessrepeatsitselfuntilthesourceanddestinationareconnected.Thecompletedpathrepresentsthesmallestsumofcellvaluesbetweenthetwopoints.Anycombinationofsourcesanddestinationscanbeapartofaleast-costpathanalysis.Forexample,youcanfindtheleast-costpathfromonesourcetomanydestinationsor36