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Towards automatic and rapid 3D geological modelling of urban sedimentary strata from a large amount of borehole data using a parallel solution of implicit equations

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Abstract

The number of boreholes investigated by geotechnical methods in long-term urban geological surveys can reach tens of thousands or even hundreds of thousands. These borehole data form a globally discrete and locally concentrated spatial distribution pattern. How to combine a large amount of unevenly distributed borehole data and large-scope geological expert knowledge to efficiently and accurately build 3D geological models is an urgent problem in urban 3D geological modelling. This paper presents a parallel and efficient Hermite radial basis function (HRBF) implicit 3D geological modelling method that can handle a large amount of borehole data while considering geomorphic unit constraints. The fast and stable solution of the HRBF implicit geological interface is completed based on the block parallel solution. The marching tetrahedron (MT) method is used to visualize the geological model. Finally, this paper conducts 75 standard strata and 18 h of automatic fine-scale 3D geological modelling based on 28,071 borehole data and conducts section spatial analysis. This paper and SKUA-GOCAD software have carried out several sets of comparative modelling experiments at the same data level, and the results show that the proposed modelling process improves the efficiency of geological modelling and geological analysis.

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The sample data used in this study are available from the corresponding author upon reasonable request.

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Funding

This work was financially supported by the National Natural Science Foundation of China [grant number: 42172327]; the Fundamental Research Funds for the Central Universities [grant number: N2201022]; the Shenyang Municipal Development and Reform Commission Project [2019–210100-64–01-056666]. We are very grateful to the editor and anonymous reviewers for their insightful comments and suggestions, which led to the improvement of the manuscript.

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Xulei Wang and Jiateng Guo conceived of the manuscript; Jiateng Guo provided funding support and ideas; Xulei Wang was responsible for the research method and program development; Shaohua Fu, Hengbing Zhang, Shengchuan Liu, Limin Dun and Xinbei Zhang provided the data used in this research and standardized the data; Xulei Wang, Jiateng Guo, Lixin Wu, and Zhibin Liu helped to improve the manuscript. All authors have read and agreed to the submitted version of the manuscript.

Corresponding author

Correspondence to Jiateng Guo.

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The authors declare no competing interests.

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Communicated by G. Liu

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Wang, X., Guo, J., Fu, S. et al. Towards automatic and rapid 3D geological modelling of urban sedimentary strata from a large amount of borehole data using a parallel solution of implicit equations. Earth Sci Inform 17, 421–440 (2024). https://doi.org/10.1007/s12145-023-01164-8

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  • DOI: https://doi.org/10.1007/s12145-023-01164-8

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