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中文摘要：
基于广义三棱柱所构建的三维地质模型，借助辅助线段实现了地质模型中任意点的交互精确选取，并在此基础上研究了任意交互剖切、虚拟钻探、虚拟开挖、虚拟漫游和图属查询等三维交互可视化实现方法。最后，以北京市中央商务区（CBD）相关工程地质资料进行了实际应用，验证了可视化方法的实用性与可行性。
英文摘要：
A 3D geological model set up base on the generalized Tri-prism. With the auxiliary line section, an accurate selection for a crossing of any point in the geological model can made. Base on this point, the paper studied the any crossing cut, virtual drilling, virtual excavation, virtual reaching, consulting related to the map and 3D crossing exchanged visualization method. Finally, the paper showed that the geological information related to the project of the Beijing Central Business District were applied for practices. The practice results showed the practical and feasible of the visualization method.
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