重大工程地下环境信息系统的设计与实现

Design and realization of underground environment information system in major project

地下环境信息系统是运用岩土工程、地理学、计算机图形学、计算数学等多学科理论和方法,以 GIS 技术为基础,结合数据库处理、C+ + 语言编程、OpenGL 编程技术、三维图像处理技术建立的对地下环境信息进行数据综合管理和分析的大型信息管理系统。结合笔者开发的广东省东深供水改造工程地下环境信息系统特点,阐述了重大工程地下环境信息系统的功能特征;探讨了 GIS 二次开发的主要技术,包括:SQL Server 数据库处理技术、OpenGL 三维图形编程技术、C+ + Builder面向对象编程技术、MAPGIS 二次开发技术等;建立了地层三维模型,并提出了映射变换和插值技术相结合的地层切剖原理,以及在地层三维显示和分析中实用的径向基函数插值、滑动最小二乘插值、分片 Lagrange 插值等方法;开发了数字制图与分析、地基基础设计计算与稳定性分析、三维空间分析的主要功能;提出了地面结构景观和地下空间一体化分析的研究方向,并初步实现其分析功能。最后,在东深供水改造工程中进行了成功应用。

Underground environmental information system is a large information- management system based on GIS technology. Being built up by theories of geotechnical engineering, geography, computer graphics, computation mathematics and technologies of data manipulation, C++ programming, OpenGL programming as well as 3D image manipulation, the system is to manage the information of underground environment and to execute model analysis. Based on the characters of intelligent information system of Dongguan-Shenzhen water supply improvement project, this paper describes the functions and realization methods of the underground environment-information system, which includes SQL Server 2000 database management, OpenGL 3D image programming, multi-quadratic interpolation method, C++ Builder object-oriented programming, secondary development on MAPGIS. Some key problems and critical technologies, such as digital GIS, digital protraction and intelligent analysis, soil foundation design and stability analysis, 3D spatial analysis, integrated spatial analysis, are briefly introduced. In addition, the effects of the application of the system to the water supply improvement are presented.