基于EB-Rep的非规则层状地质体智能建模方法研究

Research on Auto-modeling Method of Irregular Stratified Geological Solids Based on EB-Rep

为实现层状地质体的智能建模,通过分析层状地质体的特征,针对连续非倒转型非规则层状地质体,顾及到地层尖灭和透镜体,采用扩展的B-Rep数据模型(EB-Rep),提出了层状地质体智能建模方法。首先分析研究区域地层分布状况,生成该区域标准地层层序字典,再通过钻孔与字典按规则匹配,实现钻孔地层智能对比,并利用NURBS模型拟合生成光滑地层框架,最终生成真三维地质体模型。实际应用表明该方法显著提高了三维地质建模过程的效率和模型的精度。

In order to create stratified geological solids automatically, through analyzing its＇ features, the paper presents auto - model- ing method of the continuous and non - overturned stratified geological solids based on EB - Rep platform adopting the extended B - Rep （ EB - Rep） data model, considering stratum pinch - out and lens. Firstly, analyze the stratum distribution of the research area to generate the normal stratigraphic sequence dictionary. Secondly, match the borehole and dictionary by rules to finish the stratigraphic auto - correlation. Thirdly, fit smooth stratum framework using NURBS. Finally, establish the true 3D geological models. Practical ap- plication shows that the auto- modeling solution improves the efficiency of 3D geological modeling and the model precision.