The Monitoring Of Landslide Information Management System And Space Forecasting Based On WebGIS

Landslides are widespread in China and monitored in a long time. Much data is accumulated and used to prevent and forecast landslide. In addition, landslide monitoring is heading in the direction of multisensor remote automation, which makes massive data, abundant information and extensive data distribution. In view of this, the landslide monitoring information management system based on WebGIS is designed and implemented using ASP.NET and ArcGIS Server, in order to manage several landslides in one zone and kinds of monitoring data from sensors in different periods. Monitoring data and landslide characteristic information are used to landslide susceptibility mapping and the result is published via WebGIS. The main contents and results are as follows:1. The current research status of landslide is summarized, including both landslide information management system and landslide susceptibility mapping. A solution of landslide monitoring information management system based on WebGIS is proposed to solve the problem of existing landslide information management system. And the method of landslide susceptibility mapping with monitoring data is discussed.2. A detailed demand analysis is carried out according to the principle and flow of software engineering. And then the general structure, function modules and the structure of database are designed.3. The methods of weight of evidence and fuzzy logic for landslide susceptibility mapping are emphasisly discussed and implemented by means of ArcSDM (Spatial Data Modeller), as one of the ArcGIS extensions. The results are analysed and published online, which help us to assess the landslide susceptibility. On the basis of it, a new approach with monitoring data is proposed, combining spatial data and monitoring data, single landslide monitoring and region landslide susceptibility, making the result more reliable and helpful.4. The system is realized using ASP.NET, Access, Web ADF with Arc-GIS Server as GIS Server and IIS as Web Server. Finally, taking the monitoring data of the chenzhou landslide for example to test the functions of the system and achieve the desired goal. It proves that the landslide monitoring information management system based on WebGIS. makes it possible that monitoring information of many landslides can be stored together, maintained and queried by different kinds of people; even the landslides are in different areas or belong to different projects. It is also essential to the analysis of landslide stabilization and forecast.