Technology Research on the Constructing of Urban Geological 3D Model in Condition of Complex Faults
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摘要: 三维地质建模技术是城市地质应用中的一个前沿课题。三维模型的准确程度对于工程分析、判断和决策影响极大。常规的三维地质建模方法通过大量简化地质条件来降低建模的复杂度，却无法精确描述断层等复杂而特殊的地质现象。笔者以构造条件复杂、断裂发育的沉积盆地为研究对象，对复杂断裂构造条件下城市地质三维建模中的关键技术和建模方法进行了探索性研究，形成了一套以地质构造框架为单元，以岩层出露线和岩层产状作为岩层的形态要素，钻孔数据作为层面的控制要素，形成一套由面成体的“构造镶嵌”地质建模的技术方法流程。关中盆地第四纪三维地质建模实例证明，该方法可以有效地提高复杂断裂条件下三维地质建模的效率与准确性，可为地质条件复杂地区的城市地质调查项目提供借鉴。Abstract: The 3D geological modeling for the complex geologic bodies is an essential technique of the urban geology. The accuracy of 3D model, for engineering analysis, judgment and decision has great influence. A new method for 3d geological modeling is introduced, which is based on the “structures mosaic” technique. The key technology and modeling process of urban geological 3D modeling on complex fault conditions are discussed. A case study of geological model in Guanzhong basin is presented, which confirmed that, this method can effectively improve the efficiency and accuracy of complex structures condition, and can provide reference for the areas of complex geological conditions in urban geological survey.
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Keywords:
- 3D geological modeling /
- urban geology /
- complex geological faults /
- Guanzhong basin
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