红透山矿区三维地质建模与可视化研究

3D Geological Modeling and Visualization of Hongtoushan Mine

红透山矿区是中国开采深度最深的金属矿山之一,具有巨大的找矿潜力。本文采用三维地质建模和可视化技术方法,结合红透山矿区地质特征,以国际矿业软件Surpac为平台,建立红透山矿区地质数据库,在此基础上构建了矿区地表、断层、矿体以及地层三维实体模型。为提取地质控矿指标,基于地质体三维实体模型,通过地质空间立体单元划分,建立了岩性、断层、矿化分布等控矿因素的三维空间场模型,以及可控源音频大地电磁法CSAMT、瞬变电磁法TEM物探找矿指标三维空间场模型,直观显示了矿区地质体空间分布特征,为进一步开展红透山矿区深边部三维定量找矿预测奠定了基础。研究表明,三维可视化建模技术在隐伏矿体立体定量预测研究中具有明显优势,具有较高的推广和应用价值。

Hongtoushan Mine is one of the deepest metal mine in China,with very good resource potential.Most studies of this mine were based on two-dimensional modeling.In this paper,a Hongtoushan Mine geological database is first built,the earth surface 3D model,the fault 3D model,the body 3D model and the stratum 3D model are then built based on 3D geological modelling and the international 3D deposit software Surpac according to the geological features of this mine.In order to extract the ore-controlling factors,some 3D spatial field models are built,including the lithology 3D field model,the fault 3D field model,the mineralization distribution model and the geophysical index 3D spatial field models such as CSAMT model and TEM model after geological spatial divisions into unit blocks.Those models can visually display the spatial distribution of the geological body,as a foundation for further stereo quantitative prospecting prediction in deep and marginal parts of Hongtoushan Mine.The obvious advantage of 3D geological modelling is shown in stereo quantitative prediction of concealed ore body,and it is of a high value in practical applications.