Geological Modeling Interpolation Algorithm Considering Spatial Anisotropy of Strata

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Geological Modeling Interpolation Algorithm Considering Spatial Anisotropy of Strata

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[1]YU Junjian,MIN Haokun,WANG Feifei,et al.Geological Modeling Interpolation Algorithm Considering Spatial Anisotropy of Strata[J].Journal of Zhengzhou University (Engineering Science),2024,45(06):107-113.[doi:10.13705/j.issn.1671-6833.2024.06.002]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 45 Number of periods: 2024 06 Page number: 107-113 Column: Public date: 2024-09-25

Title:: Geological Modeling Interpolation Algorithm Considering Spatial Anisotropy of Strata

Author(s):: YU Junjian¹; MIN Haokun²; WANG Feifei¹; LI Jian²; 1. Henan Earthquake Agency,Zhengzhou 450016,China; 2. School of Earth Science and Technology,Zhengzhou University,Zhengzhou 450001,China

Keywords:: IDW interpolation; anisotropy; geological modeling; three-dimensional interpolation algorithm

CLC:: P624

DOI:: 10.13705/j.issn.1671-6833.2024.06.002

Abstract:: To address the issues of insufficient precision, inadequate representation of regional characteristics, andthe lack of consideration for geological spatial anisotropy in traditional geological modeling interpolation algorithms,in this study a three-dimensional geological interpolation method was proposed to take into account geological spatialanisotropy. Building upon the traditional IDW interpolation, this method involved constructing virtual boreholes,simulating the creation of an original stratum point set, and adjusting the parameters of the IDW interpolation ellipsesearch range to ultimately achieve an adaptive transformation of the optimal search parameters. Additionally, in thisstudy the concept of " directional marker points" was introduced to achieve a secondary optimization of the searcharea through " expansion" and " collapse" . Geological borehole datas from the Zhengzhou Urban Active Fault Detection Project, were used to analyze the regional adaptability of each algorithm layer by layer, implement the implicit surface representation of the three-dimensional geological model, and conduct cross-validation with commonlyused interpolation algorithms. The experiment results demonstrated that the proposed method possessed good regional adaptability and could effectively represent the anisotropic characteristics of urban underground spatial structures.While ensuring interpolation accuracy, it could effectively expresse the actual extension of strata within the region.

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Last Update: 2024-09-29