黄河下游堤防地质信息管理及安全评价系统（LHEGIS）开发

在对黄河下游堤防地质信息分析的基础上，根据系统需求，建立了黄河下游工程地质灾安评价系统。该系统将数据库管理和图形管理系统有机结合，不仅实现了数据库的输入，输出，统计分析，以及其与图形属性库之间的转换与管理，而且实现了信息的空间查询，空间分析，图形编辑，输出和图形管理，系统同时提供堤岸稳定性评价的方法和其它实有工具，为黄河下游堤防安全管理和规划提供了辅助决策工具。本文主要从系统功能需求分析，设计原则和开发方法，系统基本框架，及开发实施等五个方面，对系统开发进行了较详细地介绍。

Development Of Geological Information Management and Safety Evaluation System of Lower Huanghe(LHEGIS)

Based on the analysis of engineering geological information and the system function demand, LHEGIS (Engineering Geological Information and Embankment Evaluation System of Lower Huanghe) was developed. This system, a perfect combination of Data-base management system (DBMS) and Graphic data-base management system(GDMS), can not only input, output, numerically state and manage the data base, and interconvert the data base and attribute base of GDMS, but also inquire, analyse, edit, output and manage space graphic information. LHEGIS supply several methods evaluating the stability of bank slope and dyke, and provide some practical tools, which supply the criterion for the decision of safe management and planning. Five aspects of developing process: function demand analysis, developing methods, designing principle, structure of system, characteristics of system developing are concerned.