以野外调查及灾害特征分析为基础,综合GIS技术、数据库技术与多源数据整合技术应用于县域地质灾害数据采集与分析,基本解决区域地质灾害调查信息化的瓶颈问题。将基础地理数据、灾害点特征数据、相关多媒体数据等异构数据源进行标准化处理,规定空间数据和灾害特征数据连接的各种关系,建立了基于SQL Server的ArcSDE Geodatabase地质灾害专题数据库。以VS.NET(C#)和ArcEngine作为可视化开发工具与GIS开发平台,实现了县域地质灾害数据采集与分析系统相关功能模块及软件的设计与编制。此系统包括灾害信息的录入编辑、查询统计、分析评价、制图输出等功能,为野外灾害数据快速采集与科学管理提供了基础计算机平台。

Regional geological surveys are a basic work for disaster prevention and mitigation management. Based on the actual field survey and the geological hazard analysis, the GIS technique, the database technique and the multi-sources data technique are applied to acquire and analyze the geological hazard information, as a bottleneck in the regional geological hazard investigation. According to the geological industry standard, the characteristics of geological hazards are analyzed, and the heterogeneous data sources including the basic geographic data, the hazard feature data and the correlative multimedia data are normalized. Moreover, the connections are marked for special data and hazard characteristic data. Consequently, a special topic database is built for geological hazards by the ArcSDE and SQL Server management platform. And then, with ArcGIS's open development environment, the data acquisition and analysis system for the county regional geological hazards is successfully constructed by the Visual Studio.Net(C#) and ArcEngine technology. The software system, consisting of function modules of the map operation, the information importing and editing, the inquiry statistics, the hazard analysis and evaluation, the mapping output, can meet the demands of the geological hazard data acquisition and analysis. Furthermore, the above work not only provides a computer platform for rapidly acquiring and scientifically managing the geological hazard information, but also offers a technical support for the regional hazard analysis.