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目前三维地层表面建模方法构建的三维地层模型上表面粗糙,与地形不一致。在分析当前建模方法缺陷的基础上,基于多层DEM建模思想,提出了利用DEM修正主TIN的建模方法;该方法可保证模型与地形的空间一致性,实现模型与地理数据的一体化显示。并提出了利用虚拟钻孔进行剖面图离散化处理,将建模数据源统一为钻孔数据,从而将剖面图融入实际建模流程,解决了单一钻孔数据导致建模结果不精确及模型无法修正的问题,也简化了多源数据导致建模方法复杂的问题。最后以合肥市某区为例,展示了该方法的实现过程及建模效果。 更多还原

【Abstract】 Three dimensional strata model,constructed by the published modeling approaches,is inconsistent to the terrain.On the basis of analyzing the defect of the published modeling methods,the authors present a modeling method based on primary TIN adjusted by DEM.The method is based on multilayer DEM which has been used by others.Spatial coupling between model and terrain can be ensured based on the method presented.Visualization of model integrated with geographical data can be realized based on the p...