基于规则网格的复杂断层网络处理与建模  

Processing and modeling of complex fault networks based on regular grid

作　　者：牛露佳 王双威 曾义文 朱晨媛 王占刚[1] NIU Lujia;WANG Shuangwei;ZENG Yiwen;ZHU Chenyuan;WANG Zhangang(School of Geosciences&Surveying Engineering,China University of Mining&Technology-Beijing,Beijing,100083)

机构地区：[1]中国矿业大学(北京)地球科学与测绘工程学院,北京100083

出　　处：《地质论评》2023年第5期1980-1990,共11页Geological Review

基　　金：国家自然科学基金资助项目“三维地质结构模型的形式化表达及其规范化研究”(编号:41672326);煤炭科学研究总院创新创业科技专项(编号:2021-JSYF-005)的成果。

摘　　要：断层建模是三维地质结构建模中的主要过程之一。断层面建模过程中需要根据断层间的空间接触或者切割关系进行几何曲面的裁剪,目前方法利用三角网求交算法进行曲面裁剪,但是该算法处理复杂断层面切割关系时往往不稳定。笔者等提出了基于规则网格的复杂断层网络处理与自动化建模的方法和流程,详细讨论了基于网格化的断层网络模型形式化理论表达、建模流程中的断层网络空间关系构建以及相交裁剪处理算法等核心步骤。利用测试数据和煤矿三维地震构造解释数据进行了验证,表明该方法可以有效处理多条互相切割、主辅关系复杂的断层网络,具有较好的算法稳定性;与SKUA—GOCAD断层建模方法对比,能够减少交互过程,提高断层建模的自动化程度。Fault modeling is the main process in 3D geological structure modeling.In the process of fault modeling,the geometric surfaces should be cut according to the spatial contact or cutting relationship between faults.At present,the most approaches use the TIN intersection for surface cutting,but this algorithm is often unstable when handling the cutting relationship of complex fault surfaces.This paper proposes the method and process of complex fault network processing and automatic modeling based on regular grid,and discusses the core steps such as formal theory expression of fault network model,modeling process,spatial relationship construction of fault network and cutting processing algorithm in detail.Using test data and three-dimensional seismic structure interpretation data of coal mine,this approach can effectively handle multiple fault networks with complex fault relationships,and has good algorithm stability;By comparing with the SKUA—GOCAD fault modeling method,it can reduce the interaction process and improve the automation of fault modeling.

关 键 词：断层网络 空间关系 规则网格 曲面裁剪 断层建模 

分 类 号：P631.4[天文地球—地质矿产勘探] P618.11[天文地球—地质学]