洪水灾情评估信息系统研究

本文以黄河下游流域为试验区,分析研究洪水灾情评估信息系统的设计,建立与应用。首先,运用结构化设计原理,从用户调查、数据库设计、模型库设计和系统定义四方面论述了洪水灾情评估信息系统概念设计;然后,以ARC/INFO为主要支撑软件,建立了黄河下游洪水灾情评估实验型信息系统。其中专题数据库由11个专题要素构成;模型库包括基础数理模型、统计分析与空间分析模型和专业应用分析模型三个不同层次的模型。并开展了此系统的应用示范。

ON FLOOD HAZARD EVALUATION INFORMATION SYSTEM

Remote sensing and geographic information system provide important technical supports for the modernization of flood control and prevention. This paper discussed the design, development and application of the flood hazard evaluation information system. Firstly, the author explicated the method and strategies of the system design from the point of view of users investigation, database design, model base design, and system definition and building-up under the direction of structural analysis and design theory. Then, one example system, flood hazard evaluation information system in the Lower Yellow Rver which is composed of large database and complicated model base, was established, based on ARC/INFO GIS software system. Its database consists of 11 geographical environmental background and socio-economic elements, and the computer storage reaches 70MB. The model base includes basic mathematical model, statistical and spatial analysis model, and profession 1 applied models, At last, two case studies were discussed.