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全面系统地研究了沉积地层系统三维实体构模的原理、方法及实施过程。针对沉积地层系统的几何结构特征,提出了一种基于钻孔数据的三维实体模型生成方法“钻孔-层面-实体法”。该方法首先使用二分拓扑结构将钻孔数据离散化为一系列散点,基于这些散点插值拟合出各个地层顶、底界面的初始高程,自动推算出缺失地层的地质成因;然后按照不同的地质成因,自动对缺失地层及其控制界面进行交切处理、高程调整与一致性处理;最后生成用三维块体或三棱柱体元充填的三维实体模型。通过上海城建工程中的一个应用实例验证了“钻孔-层面-实体法”的有效性。
The principle, method and implementation process of three-dimensional solid modeling of sedimentary stratigraphic system are comprehensively and systematically studied. Aiming at the geometric structure of the sedimentary stratigraphic system, a 3D solid model generation method based on borehole data is proposed, that is, “Drilling-plane-solid method”. In this method, the bifurcation topology is used to discretize the borehole data into a series of scatter points. Based on these scatter interpolation, the initial elevation of the top and bottom interface of each formation is fitted and the geological origin of the missing formation is automatically deduced. Then, Geological causes, automatically cut the missing strata and its control interface for the intersection of processing, elevation adjustment and consistency of treatment; Finally, the formation of three-dimensional block or triangular prisms filled three-dimensional solid model. Through an application example in Shanghai Urban Construction Project, the validity of “Borehole - level - entity method” is verified.