基于构造恢复理论的含复杂断层三维地质建模方法  

3D Geological Modeling Method Based on Tectonic Restoration Theory

作　　者：花卫华[1] 曾新灵 郭丹阳 宿紫莹 张文[1] 段剑超 Hua Weihua;Zeng Xinling;Guo Danyang;Su Ziying;Zhang Wen;Duan Jianchao(School of Geography and Information Engineering,China University of Geosciences,Wuhan 430078,China)

机构地区：[1]中国地质大学地理与信息工程学院,湖北武汉430078

出　　处：《地球科学》2024年第4期1411-1420,共10页Earth Science

基　　金：国家重点研发计划课题(No.2019YFC0605102);国家自然科学基金项目(No.41972307).

摘　　要：在三维地质建模中,许多工作集中于断层本身的模拟,而忽略了断层时序性对地层构造的影响,然而考虑断层构造时序性及其导致的变形是十分必要和关键的.针对此问题,基于断裂恢复与演化影响域理论,提出了断裂矢量场建模方法用于含复杂断裂网络的三维地质建模,先使用断裂矢量场位移算子以断裂构造演化逆序恢复影响域范围内的地层和断层数据,再以演化正序逐步计算受断层影响后的地层和断层数据,获得含复杂断层网络的三维地质模型.通过建模实验和对比实验,验证了方法对数据具有更高的利用率以及在处理断裂接触时的能力,并且在建模过程会自动计算断裂导致的一切位移,提高了建模合理性和效率.方法充分考虑了断层构造时序性的影响,更适用于解决具有复杂接触关系的断裂网络模型构建问题.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.

关 键 词：三维建模 复杂断层网络 断裂构造恢复及演化 构造地质学 

分 类 号：P628[天文地球—地质矿产勘探]