Research On SWMM Model Network Service Platform Based On Open Source WebGIS

With the development of internet technology, particularly the new generation information technology development of big data, cloud computing, networking and mobile Internet. the network as a platform for geospatial information sharing and processing, GIS industry and researchers pay more attention to how to provide better spatial information service and data analysis capabilities for the public and researchers.integration SWMM with the WebGIS will help to enhance the WebGIS data analysis capabilities. SWMM model was widely used by domestic and foreign researchers because it in drainage system design and optimization, urban non-point source pollution and low impact of the development design has excellent simulate capability. Domestic and foreign combined GIS and SWMM model developed many excellent desktop software, such as infoSWMM, DigitalWater. not much research about integrated SWMM and WebGIS. Therefore the integration of SWMM and WebGIS research has strong research significance and application value.In this paper, adopt ASP.NET MVC Web application framework, based on map service resource published by the map world, using OpenLayers, JQuery EasyUI,MongoDB, AJAX open source technology to build the open source WebGIS service platform that integrated SWMM and WebGIS, using the service platform simulate the Haidong New District, Dali drainage network system to test the services platform’s availability and reliability. Paper did research and discussion related to the following aspects:1. Described the architecture, basic principles, technical characteristics of the open source WebGIS technology and the commonly used program. Service platform combined with present technology, hardware and software conditions, adopt the multi-tier architecture as the architecture of the service platform.2. Studied on the service platform functional design. did a lot research on map service, model function design to make the paltform has friendly interface and good effect.3. Discussed the role of pen source technology that used by the platform.the keycode to achieve related functions.4. Researched the processes and methods to extract SWMM model key parameters. With this process to extract Haidong New District, Dali drainage network key parameters, use the service platform to simulate and analyze the drainage capacity of the drainage network.