为加强煤矿地质直观展示方式，实现对煤矿井下钻孔群的可视化展现和辅助数据分析，探讨了定向钻孔群轨迹三维可视化呈现技术的主要实现步骤，阐述了各步骤中的核心方法和关键技术；设计了定向钻孔群轨迹三维可视化呈现软件并展示了其主要功能、数据流、逻辑框图等，基于C#和WPF编程开发了对应软件并展示了部分三维可视化效果。

In order to enhance the directional display of coal mine geology and achieve visual display and auxiliary data analysis of underground drilling groups in coal mines, this paper discusses the main steps of 3D visualization of directional drilling group trajectory, and expounds the core methods and key technologies in each step. The 3D visualization software of directional drilling group trajectory is designed and its main functions, data flow and logic block diagram are shown. The corresponding software is developed based on C# and WPF programming and part of the 3D visualization effect is shown.