| Urban waterlogging simulation involves rainfall data, DEM terrain data, remote sensing data, drainage network system data, real-time monitoring data and various types of other data. Data extraction and results statistic expression are huge workload. In addition, traditional modeling data processing method has many deficiencies. By using ArcGIS technology, this paper studies urban storm waterlogging simulation data analysis and result statistical expression, and develops urban storm waterlogging simulation system that can be used to simulate the actual rainstorm waterlogging based on Visual Studio 2010 platform and C # programming language.The main contents and innovations of this paper are as follows:(1) A research method that uses ArcGIS Geodatabase to construct urban storm waterlogging simulation system database is proposed. And this method can achieve data’s batch conversion, edit, and storage in the study area drainage system by Arc GIS data conversion and data editing function. The data processing efficiency issues of traditional modeling have been satisfactorily resolved.(2) A research method that uses ArcGIS spatial analysis technique to achieve sub-watershed division and feature extraction is proposed. This method can make up the insufficient of traditional data calculation means, and improve input parameters’ accuracy of the waterlogging simulation system.(3) This paper also proposes a research program that comprehensively uses Windows component programming, ArcGIS Engine components secondary development, SWMM Engine, and IOT platform technology to tightly integrate and construct urban storm waterlogging simulation system. The system can implement the database establishment, file automatically generation, waterlogging simulation, surface water diffusion calculation, real-time water-level monitor of waterlogging point, simulation results visualization and statistical analysis.(4) The system takes Wuhan Luo Jia Road area as the study area, inputting two typical history rainstorm to simulate rainstorm waterlogging, and detailedly analyze the study area simulation result such as outlet flow, overflow node, waterlogging position, surface water depth. The simulation results are consistent with the actual situation, which prove the system has high reliability and practical value. |
