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3D Geological Modeling Method Based on Tectonic Restoration Theory
Hua Weihua, Zeng Xinling, Guo Danyang, Su Ziying, Zhang Wen, Duan Jianchao
PDF(1565 KB)
PDF(1565 KB)
3D Geological Modeling Method Based on Tectonic Restoration Theory
In the three-dimensional geological modeling, many works focus on the simulation of the fault itself, ignoring the influence of the fault sequence on the stratum structure. However, it is very necessary and critical to consider the fault sequence and the deformation caused by it. To solve this problem, based on the theory of fault recovery and evolution influence region, in this paper it proposes a fault vector field modeling method for 3D geological modeling with complex fault network. First, the fault vector field displacement operator is used to recover the stratum and fault data within the influence region in the reverse order of fault structure evolution, and then the stratum and fault data affected by the fault are calculated step by step in the positive order of evolution to obtain a 3D geological model with complex fault network. Through modeling experiments and comparative experiments, it is verified that the method has a higher utilization rate of data and the ability to deal with fracture contact, and all displacements caused by fracture will be automatically calculated in the modeling process, which improves the rationality and efficiency of modeling. The model constructed by this method takes full account of the influence of the time sequence of fault structure, and is more able to solve the problem of fault network model construction with complex contact relationship than the general method.
3D modeling / complex fault network / restoration and evolution of fault structure / structural geology
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本文提出的断裂矢量场建模方法依托于国家重点研发计划项目子课题“区域深部含矿地质体建模与可视化”（2019YFC0605102）和国家自然科学基金面上项目“多元数据联合影响下复杂地质模型快速构建方法”（41972307）.前者旨在研究稀疏数据条件下，深部含矿地质体的三维地质建模方法与面向专业的三维地质构造模型与属性模型的三维可视化技术.后者旨在研究地质领域多元化地质数据的联合影响理论方法，确定结构联合影响函数的数学条件，实现复杂地质模型的自动构建方法，充分约束地质知识、地质结构、地质原产地、地球物理等信息.感谢相关项目在理论和技术方面的支持.
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