The Study Of3D Geo-hazard Information Management Platform Based On G/S Model

China is a mountainous country, mountain land and hills account for more than2/3of the territory area. Prominent terrain diversity, complex geological environmentand the frequent disastrous weather rendered China a geo-hazard which causes seriousdisaster widely developed country in the world. Since2000, abrupt geo-hazards inChina caused1100death and miss on average, and economic loss12-15billion yuan.According to investigation and statistics, recently there are240thousand geo-hazarddanger points which are threatening13million59thousand people. Geo-hazards havebrought significant impacts to the safety of people’s life and properties, hence thenecessity and urgency of geo-hazard prevention. This article makes use of moderninformation techniques to establish geo-hazard information management platform,realizing the comprehensive management and analysis display for geo-hazard relatedinformation, which provides an assisting analysis and decision-making method forhazard prevention, hazard reduction and hazard relief and has a positive meaning tothe improvement of the informatization of the geo-hazard prevention process.G/S model is a spatial information network service model, which takes theadvantages of C/S model and B/S model. It can organize and manage mass andisomerous spatial data based on the current network environment, and realize servicepolymerization through clients. Usually geo-hazard information has characteristics ofthat of spatial data. Combining G/S model with geo-hazard information managementis able to effectively solve the mass data management and presentation problems ingeo-hazard information management system.This article, for the limitation in the geo-hazard prevention and treatment work, explained the significance that geo-hazard information management system createsfor geo-hazard prevention and treatment work, and elaborated the applicationrequirements of spatial information management techniques during geo-hazardprevention and treatment process. On the basis of data objects managed by geo-hazardinformation system, this article makes clear the application model of spatialinformation services in geo-hazard information management system, applying G/Smodel to geo-hazard information system. From the perspective of data organizationand management and service polymerization, combined with the geo-hazard industrialapplication requirements, deeply studied the architecture and operating mechanism ofgeo-hazard information management system based on G/S model. Through the designof geo-hazard markup language (GHML) and data registration center applicationmodel, established the application architecture of G/S model in geo-hazardinformation management system and designed and implemented its prototype system.The main work is as follows:(1) Studied and analyzed the applied situation of spatial information techniquesin geo-hazard reduction and prevention, and made clear the business requirements ofspatial information service in geo-hazard information management.Analyzed the important role spatial information techniques play in geo-hazardreduction and prevention and the significance geo-hazard management creates formodern hazard reduction projects. With respect to the massive, isomerous andgeo-location related characteristics of spatial data, on the basis of the study of thecharacteristics of spatial information services, discussed the application architectureand service model of spatial information services in geo-hazard informationmanagement platform. Studied and established the business requirements of spatialinformation system in geo-hazard information management, which laid a solidfoundation for studying the application technical architecture of G/S model ingeo-hazard information management.(2)Designed a geo-hazard information polymerizing and presenting dataexchange system which takes GHML as the core.On the basis of the analysis of GML, KML and other markup languages, throughthe study of the management and presentation methods of spatial and non-spatialinformation on geo-hazard information management platform, based on the grammarof XML, designed a geo-hazard markup language which is used for organizing anddescribing spatial data, attribution data, feature data and data services in geo-hazard information management platform, which in turn used for realizing data aggregationof client platform.(3) Designed a geo-hazard industrial data sharing management model based onlocation based service (LBS).Through the analysis of the procedure of service polymerization, put forward ageo-hazard industrial data sharing management model which is client-oriented servicepolymerization, takes GHML as the core and data registration center as the carrier.This model is used to realize the data service sharing and exchange betweengeographical browsers.(4) Preliminary established the technical architecture of geo-hazard informationmanagement platform based on G/S model.On the basis of the study of the application architecture of G/S model, combinedwith the application needs of spatial information service required by geo-hazardinformation management system, made clear the technical ideas used for realizinggeo-hazard information management system based on G/S model, and analyzed thearchitecture and operating mechanism of geo-hazard information management basedon G/S model, confirmed the data registration center application architecture whichtakes GHML as the core. In terms of the requirements of geo-hazard informationmanagement, deeply studied server clusters and geographic browser platform, andfinally established the technical architecture of geo-hazard information managementbased on G/S model.(5) Preliminary constructed the3D geo-hazard information comprehensivemanagement platform based on G/S model.Based on the technical architecture of G/S model, for the applicationrequirements of geo-hazard information management, designed and constructed theservers and the geographical browser in detail. Taking GHML as the core, this articledescribed and organized the information and services which is mainly applied togeo-hazard industry. Implementing the publish and sharing of data service throughdata registration center, and the service polymerization and presentation at geographicbrowser. Finally, this article shows a preliminarily construction of3D geo-hazardinformation sharing management platform based on G/S model, which provide certainreference and promotion values to the establishment of geo-hazard informationcomprehensive management system and the industry application platform mainlydealing with spatial information.