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Management and Predication Information System of Geo-hazards for Railway based on GIS Technique

With the rapid development of the economy in China, Geo-hazards have bringing more and more damages to railway. It is one of the most important ways to reduce damages and prevention and cure Geo-hazards to use GIS technique. For the standardization, visualization and informatization of data management of Geo-hazards, and based on the author's studies, an information system of Geo-hazards for railway has been developed from MAPGIS. The paper introduces the train of system design, the structure and functions. The system, which offers an integrative, intelligent and standardized platform to administrators and engineers, has following components: 1) an information management system of Geo-hazards on the basis of GIS; 2) an assessment and predication system of Geo-hazards which integrated with GIS software; 3) an information broadcast system of Geo-hazards for railway on the basis of WebGIS technology, which can realize the promulgation of Geo-hazards information and map through World Wide Web. The system has a N-tier constitution consisting of client layer, intermediate layer and database layer. The system can be divided into six modules and all modules combine together to an integrated system. For the characteristics and requirement of Geo-hazards information for railway, the paper further discusses several key problems met in the carrying out of the system, such as data acquisition, management of very large-scale database, integrating GIS technique into assessment and predication model of Geo-hazards, the broadcast of Geo-hazards information through Web, etc. All above present the feasible and complete way to the implementation of the system. It will get more social benefit from the actualizing of the system.