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针对地质断层三维建模及可视化领域中现有技术存在的模拟断层局限性、插值困境等问题,本文提出了断层表达式方法建模方法。首先,以地质断层构造的形成机制为理论依据,分析构造断层表达式所需要运算对象和算子,构建表达式规则,并运用上下文无关文法对表达式规则进行形式化描述;然后,对断层原始勘探数据进行规范化,形成构建断层表达式所需要的断层二维数据表,从中提取构建断层表达式的运算对象集合和算子集合,形成断层表达式;最后,对断层表达式进行计算,形成断层地质体抽象模型,并结合相关勘探数据运用相关算法及图形库等工具进行三维地质建模及可视化。实验以包含多条断层的达连河地质体数据为基础进行实验验证,建模结果与真实地质情况符合。实验结果表明,断层表达式建模方法解决了现有技术的局限性问题,避免了对地层断裂区域的插值运算,从而解决了插值困境等问题。
Aiming at the problems such as the limitations of the simulated faults and the interpolation difficulties existing in the existing technologies in the field of 3D modeling and visualization of geological faults, this paper presents a method for modeling the fault expression. Firstly, based on the formation mechanism of the geological fault structure, the objects and operators needed to construct the fault expression are analyzed, the rules of the expression are constructed, and the rules of the expression are formalized using the context-free grammar. Then, And normalize the exploration data to form the two-dimensional fault data table needed to construct the fault expression, and extract the set of operators and operator sets from which the fault expression is constructed to form the fault expression. Finally, the fault expression is calculated to form a fault Geological body abstract model, and combined with relevant exploration data using algorithms such as algorithms and graphics library for 3D geological modeling and visualization. Experiments are carried out on the basis of the Dalianhe geological body data with multiple faults. The modeling results are consistent with the real geological conditions. The experimental results show that the fault expression modeling method solves the limitations of the prior art and avoids the interpolation of faults in the formation, thus solving the problems such as interpolation difficulties.