Study on the Early-warning Information Platform for Leakage-diffusion of Dangerous Gases Based on WebGIS

With the suddenly occurring leak-diffusion accident of dangerous gases as the object, a study was made on the early-warning information platform based on WebGIS (web geographical information system). According to the needs, the overall structure, functional design, database and technology were deeply explored. Based on the B/S (Browser/Server) model, the early-warning information platform was developed by using ArcGIS, ASP.NET and VB.NET, which released the timely information through the internet. This platform provides accurate forecasting information and timely technical supports for environmental departments to make an early-warning, command, dispatch and control of the leakage-diffusion accidents of dangerous gases; it is also of great importance for improving the emergency rescue command and the efficiency of emergency rescue.