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Article

3D Modeling Method for Dome Structure Using Digital Geological Map and DEM

1
Key Laboratory of Virtual Geographic Environment, Nanjing Normal University, Ministry of Education, Nanjing 210023, China
2
Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China
3
State Key Laboratory Cultivation Base of Geographical Environment Evolution (Jiangsu Province), Nanjing 210023, China
4
Jinan Rail Transit Group Co., Ltd., Jinan 250101, China
*
Author to whom correspondence should be addressed.
ISPRS Int. J. Geo-Inf. 2022, 11(6), 339; https://doi.org/10.3390/ijgi11060339
Submission received: 12 May 2022 / Revised: 2 June 2022 / Accepted: 2 June 2022 / Published: 7 June 2022

Abstract

Geological maps have wide coverage with low acquisition difficulty. When other geological survey data are scarce, they are a valuable source of geological structure information for geological modeling. However, for structures with large deformation, geological map information has difficulty meeting the requirement of its 3D geological modeling. Therefore, this paper takes the dome structure as an example to explore a 3D modeling method based on geological maps, DEM and related geological knowledge. The method includes: (1) adaptively calculating the attitude of points on the stratigraphic boundaries; (2) inferring and generating the bottom boundary of the model from the attitude data of the boundary points; (3) generating the model interface constrained by Bézier curves based on the bottom boundary; (4) generating the top and bottom surfaces of the stratum; and (5) stitching each surface of the geological body to generate the final dome model. Case studies of the dome in Wulongshan in China and the Richat structure in Mauritania show that this method can build a solid model of the dome based only on geological maps and DEM data, whose morphological features are basically consistent with those embodied in the section view or the model generated by traditional methods.
Keywords: three-dimensional geological modeling; attitude calculation; dome structure; digital geological map; interface generation three-dimensional geological modeling; attitude calculation; dome structure; digital geological map; interface generation

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MDPI and ACS Style

Liu, X.-Y.; Li, A.-B.; Chen, H.; Men, Y.-Q.; Huang, Y.-L. 3D Modeling Method for Dome Structure Using Digital Geological Map and DEM. ISPRS Int. J. Geo-Inf. 2022, 11, 339. https://doi.org/10.3390/ijgi11060339

AMA Style

Liu X-Y, Li A-B, Chen H, Men Y-Q, Huang Y-L. 3D Modeling Method for Dome Structure Using Digital Geological Map and DEM. ISPRS International Journal of Geo-Information. 2022; 11(6):339. https://doi.org/10.3390/ijgi11060339

Chicago/Turabian Style

Liu, Xian-Yu, An-Bo Li, Hao Chen, Yan-Qing Men, and Yong-Liang Huang. 2022. "3D Modeling Method for Dome Structure Using Digital Geological Map and DEM" ISPRS International Journal of Geo-Information 11, no. 6: 339. https://doi.org/10.3390/ijgi11060339

APA Style

Liu, X.-Y., Li, A.-B., Chen, H., Men, Y.-Q., & Huang, Y.-L. (2022). 3D Modeling Method for Dome Structure Using Digital Geological Map and DEM. ISPRS International Journal of Geo-Information, 11(6), 339. https://doi.org/10.3390/ijgi11060339

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