The Technology Research Of The Hydraulic Model Of Drainage System Integrated With Geographic Information System(GIS)

With the rapid development of urban construction,the protection of water environment is more and more important,the rain water remove and treatment establishment has been gradually complered.And it brings a lot of data of draining pipe network and appurtenant works.It is very difficult to manage urban underground nerwork by handwork method.It is necessary for modernization city to establish a perfect,exact draining pipe network GIS(Geographical Information System) to enhance management efficiency and quality of draining pipe network.The content of this paper,is the technology of integrating drainage system model with Geographic Information System(GIS).In a way of studying the model of drainage system,the object is Strom Water Management Model(SWMM).At the aspect of working over GIS,the object is ArcGIS.The method of intergrating SWMM with ArcGIS is the second development using the technology of Dynamic Linked Library(DLL).Firstly,investigation had been done on the drainage network system's structure and system function.Secondly,analysis had been carried out on the system's properties as well as its geometrical information,the sources,process of obtaining as well as the transformation methods.A database schema and structure had been introduced;a connection between network's property information and geometrical information had been established and could be updated in both directions.Then,the transformation and transmission process between ArcGIS and SWMM of its inter-connection properties was investigated.Lastly,combing with ArcGIS,a new functionality of ArcGIS for dynamic generation of the longitudinal and vertical profile of the drainage network was created.This model has been used in the management of the drainage system of Shijingshan.It has been proved by practice that this model can be used as the daily management and scientific evaluation for the drainage system.And I will compare the system that developed by myself with the mature software(Mike Urban of DHI) of the world.Considered the advantages and disadvantages of the basic interface and the development cost,I have come to the conclusion that the system developed by myself is simple to operate and cost less money.