Academic Journal of Computing & Information Science, 2022, 5(11); doi: 10.25236/AJCIS.2022.051106.
Xiong Xiao1, Jian Lin2
1Hunan University of Science and Technology, Xiangtan, China
2Hunan University of Science and Technology, Xiangtan, China
Map of geological cross section is the most intuitive expression of strata in the vertical direction. Realizing automatic filling of lithologic patterns and reflecting the changes of stratum curvature are important contents of map of geological cross section drawing. The traditional lithologic pattern filling method can not show the change of rock stratum dip angle. To solve this problem, an algorithm of lithologic pattern drawing based on arc fitting is proposed. By analyzing the mathematical relationship between the dip angle of the rock stratum and the boundary line of the rock stratum, the data needed for drawing can be increased, and then the curve and lithologic pattern can be drawn according to the dip angle of the rock stratum.The application results show that the lithologic pattern compiled by the algorithm changes with the change of rock dip, and the first derivative of a single curve in the lithologic pattern is continuous and the segments are circular arcs.
Map of geological cross section, Lithologic pattern, Computer aided design, Stratigraphic dip, CAD secondary development
Xiong Xiao, Jian Lin. Lithological Patterns Based on Arc Fitting. Academic Journal of Computing & Information Science (2022), Vol. 5, Issue 11: 41-45. https://doi.org/10.25236/AJCIS.2022.051106.
[1] Ichoku Charles and Chorowicz Jean and Parrot Jean-Francois. (1994). Computerized construction of geological cross sections from digital maps. Computers & Geosciences, 20(9), pp. 1321-1327.
[2] Lingxia Chen & liang Xu.(2012).The Method Research of Auto-Generating Engineering Geology Histogram Based on MapGIS..(eds.)Selected, peer reviewed papers from the 2nd International Conference on Computer-Aided Design, Manufacturing, Modeling and Simulation(CDMMS 2012)(pp.805-808).
[3] Ji Guangjun et al. (2022). Study on the Method of Automatically Drawing Multiscale Engineering Geotechnical (Geological) Sections Step by Step of Engineering Layers including Lenses. Advances in Civil Engineering, 2022.
[4] Li Zhang and Peng Zhang. (2020). CAD secondary development technology based on. NET API. IOP Conference Series: Materials Science and Engineering, 768(7), pp. 072052.
[5] Shiming Fang et al. (2002). Computer-aided compilation of fold structures in geological map cutting profiles. Geology and Exploration (03), 52-54.