VR-GIS技术在地面沉降研究中的应用

Application of VR-GIS Technology to Study Land Subsidence

将虚拟地理信息系统技术应用于地面沉降研究中,以VisualC++6.0为开发工具,利用OpenGL(Open Graphics Library)开放图形库渲染三维空间信息。以苏锡常地区为例,实现以三维水文地质结构为基础,虚拟地面沉降动态过程;在三维水文地质结构模型的基础上构建地面模型,在虚拟模型中耦合地下水位埋深和地面沉降间的关系模型,实现地面累计沉降量的模拟预报,从而,为地面沉降研究提供一个可视化操作平台。

Virtual reality geographic information system （VR-GIS） technology was utilized to the study of land subsidence. With Visual C＋＋ as an interface development tool and OpenGL （Open Graphics Library） as a graphic tool, the process of land subsidence was simulated, in Suzhou-Wuxi-Changzhou area, Jiangsu Province, based on the three dimensional hydro-geological structure. At the same time the correlation model between groundwater level and accumulative land subsidence was coupled in the virtual environment and the value of accumulative land subsidence could be calculated when the groundwater level was given. All the work is to build a visualizing platform for researching the land subsidence.