|
According to the characteristics of flood control in Jinan, and based on ArcGIS Engine component development technology, this paper designed and developed rain regime system of Jinan. The system contains GIS basic functional module, rain condition query module, real-time rainfall monitoring module, isoline drawing module, urban water logging simulation module and system settings and management module.GIS basic functional module realized zoom in, zoom out, pan, feature selection, measurement, and so on. According to the number of query stations each time, rain regime query module could be divided into single station query and multi-station query module. In order to display rain information in form and graph, we developed a user control DundasGrid, this control not only inherit functions of Dundas control and DataGridView control, but also realized interactions of the two controls. Real-time rain condition monitoring module could monitor current rainfall, and dynamically reflect rainfall change on electronic map. By utilizing Kriging method, isoline drawing module could interpolate rainfall data, and draw isohyet chart. Urban water logging simulation module, which seamlessly integrated rain storm and flood simulation model of Jinan city, could simulation water level and flow rate of important river sections, water depth and flow velocity of low-lying areas, and water depth change process of each grid. System settings and management module could set some parameters of the system, and manage users and roles.We developed Jinan rain regime system using C# language. This system could query rain condition, monitor real-time rainfall. Besides, by integrating rainstorm and flood simulation model, the system could calculate water level and flow rate of important river sections, water depth and flow velocity of low-lying areas, and water depth of urban area. The system could provide scientific decision basis for leaders and experts, thus they could take effective measures in advance and reduce losses caused by floods to the minimum.
|