煤矿虚拟环境的巷道3维建模研究

A Research on Three-Dimensional Modeling of Roadway in Virtual Environment for Coalmine

文中首先对煤矿井下巷道的类型进行了概述,把巷道分为巷道体和巷道节点,根据弧段节点拓扑数据结构思想,分别进行3维建模,设计了巷道体和巷道节点的数据结构以及算法,并且构建了巷道间的拓扑关系,利用C++、OpenGL编程语言和SQL Server 2000数据库,以及多线程技术、多媒体技术及人造视差的立体技术,开发了一套3维煤矿虚拟现实系统。该系统既具有巷道的3维显示功能,又具有查询功能,并为以后的空间分析奠定了良好的基础。

In this paper, based on the analysis of mine roadway＇s characteristic, a mine roadway is broken up into the roadway body and the roadway node, and the body and the node are rebuilt into 3D model respectively. Considering the spatial characteristics of the roadway, the separation is of another good point- the topology among roadways is easy to build, which is very useful for the further spatial analysis. According to above idea, we take the roadway＇s section as the transverse control data and take roadways middle line as the longitudinal outstretched data, so we can build roadway＇s 3D model. Moreover, we build the node＇s 3D model at the roadways＇ joint point. In this data structure, we consider a roadway as a line object and a roadway node as a point object in the macroscopic sense, and in the meanwhile, we don＇t ignore that the roadway body and the roadway node are of their spatial geometrical characteristics and attributes in the microcosmic sense. Furthermore the mine roadway＇s data structure is provided in C＋ ＋ and some 3D visualization cases drawn by OpenGL are shown.