江西相山居隆庵铀矿床隐式三维地质建模

Implicit 3D Geological Modeling of Julong’an Uranium Deposit in Xiangshan,Jiangxi Province

目前铀矿床的三维地质建模主要采用显式建模方法,但该方法在建模过程中存在大量人机交互操作,且数据变化后模型难以快速更新。为提高铀矿床三维地质建模效率,探索运用快速径向基函数插值法进行三维地质建模,该方法可直接运用钻孔分层数据进行空间数据插值快速构建三维地质模型。文章选用Leapfrog Geo软件为建模平台,运用35个钻孔数据和隐式函数快速、自动、高精度构建了居隆庵铀矿床三维地质模型,并运用后增的3个钻孔数据对模型进行了快速动态更新。结果表明,隐式三维地质建模具有速度快、操作简单、精度高、模型可快速更新等特点,可为其他地区的铀矿床三维地质建模提供技术借鉴。构建的居隆庵铀矿床三维地质模型立体呈现了矿区深部各地质体的三维形态特征,为下一步深部找矿提供了重要依据。

At present,the 3D geological modeling of uranium deposits mainly adopts the explicit modeling method,but this method needs a large number of human-computer interaction operations in the modeling process,and the model is difficult to update quickly after data changes.In order to improve the efficiency of 3D geological modeling of uranium deposits,we explored the use of fast radial basis function interpolation method for 3D geological modeling.This method can directly use borehole layered data for spatial data interpolation to quickly construct 3D geological model.By selecting Leapfrog Geo software as the modeling platform,the 3D geological model of the Julong’an uranium deposit was constructed quickly,automatically and accurately with 35 borehole data,and the model was quickly and dynamically updated with three later added borehole data.The results showed that the implicit 3D geological modeling has the characteristics of fast speed,simple operation,high precision and rapid updating of the model,which provides technical reference for 3D geological modeling of uranium deposits in other areas.The constructed 3D geological model of Julong’an uranium deposit presents the 3D morphological characteristics of various geological bodies in the deep part of the mining area,providing an important basis for the next deep prospecting.