中文摘要：

提出了一种新的三维巷道数据模型。该数据模型以半巷道体为基本的_一维构模体元，并根据陔体元，抽象出构成该体元的5种基本的构模元素点、弧段、特征连接线、巷道剖面以及基础面元。在对该体元模型进行分析的基础上，详细探讨了该体元所有可能的11种基本类型，并分别给出其三维模型示意图。以这些半巷道体体元模型为基础，就可以构建出完整的地下矿山巷道网络。该项研究丰富了数字矿山理论，对矿山安全生产具有重要意义。

英文摘要：

A new three-dimensional data model of tunnel had been put forward,semi-tunnel was as volume element to construct the 3D tunnel. According to this volume element, five basic modeling elements were abstracted to form the semitunnel. There were point, arc, feature connector line, tunnel section, and foundation surface. On the basis of analysis, data model of semi-tunnel, the eleven possible basic types of semi-tunnel were discussed in detail, and the illustrations of these types＇three-dimensional model were given. On the foundation of these types volume element of semi-tunnels, it could build a model of simple tunnel, complex tunnel, and composite tunnel. In terms of above new three-dimensional data model, the complete underground mine tunnel network would be constructed. Thereby the study could enrich the theory of Digital mine, it was significant for development and safety production in mine.