摘要:
基于 GoCAD 软件, 对月山矿田的地质体进行几何建模, 对于不同产状的地质体及不同的建模数据来源, 选取了相应的方法进行建模研究.对于产状稳定的矿体, 基于剖面数据, 以 Section-TIN 法建模,或基于交叉剖面数据, 以拆分曲面多源数据约束优化的方法建模; 对于法向稳定的地表, 基于多源地形数据, 采用边界约束下的点集 TIN 剖分建模; 对于法向稳定的地层及断层, 基于剖面数据, 以 Section-TIN 法建模, 并在地表约束下融合、优化; 对于分支复合的岩体, 基于交叉剖面数据, 以 Section-TIN 法及平行曲线组法构面, 并在多源数据局部约束下优化.所建模型高度吻合原始数据且光滑逼真, 对于地质体展布特征多样化, 建模数据多来源条件下, 如何选取合理有效的方法进行三维地质建模提供了参考.%Based on the GoCAD software,this paper studies the 3D modeling methods for geological bodies with different occurrences and data sources from Yueshan ore field. Ore bodies with steady occurrence are modeled based on the profile data by Section-TIN method Besides,the ore bodies simulation is based on cross-section data by the method of Splitting Surface and Optimization under multi-source data constraint. Based on multi-source terrain data,for the topography modeling with stable normal direction,the TIN subdivision on point set under boundary constraints is used. For the normal stable strata and faults,based on the profile data,the models, constructed by Section-TIN method,are merged and optimized under the topography constraint. For the intrusion with branches,based on the cross-section data,the initial surface is established by Section-TIN method and Parallel Sets of Curves method,and the model is optimized under the local constraint of multi-source data. The models can highly match the original data,as they are smooth and realistic. The methods developed provide reference for the geological body modeling with diversified distribution characteristics and multi-source data.