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Geometrization of a 3D numerical model of an underground facility based on the results of terrestrial laser scanning

Maciej Bodlak

Maciej Bodlak

University of Science and Technology, Faculty of Civil Engineering. Department of Geotechnology, Hydro Technology, and Underground and Hydro EngineeringPoland
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Bodlak, Maciej
  
18 jul 2024
Geometrization of a 3D numerical model of an underground facility based on the results of terrestrial laser scanning's Cover Image
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Categoría del artículo: Original Study
Publicado en línea: 18 jul 2024
Páginas: 184 - 192
Recibido: 12 abr 2024
Aceptado: 03 jun 2024
DOI: https://doi.org/10.2478/sgem-2024-0012
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© 2024 Maciej Bodlak, published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1:

Stages of creating simplified spatial drawings on the example of selected excavations of the Chapel of St. Kinga and Erazm Barącz’s chambers (Maciaszek et al., 2010).
Stages of creating simplified spatial drawings on the example of selected excavations of the Chapel of St. Kinga and Erazm Barącz’s chambers (Maciaszek et al., 2010).

Figure 2:

Trimble TX8 laser scanner during measurements in the St. John Adit.
Trimble TX8 laser scanner during measurements in the St. John Adit.

Figure 3:

a), b) Generating 2D cross sections from a “point cloud” in the CloudCompare program and c) dimensioning the selected cross section.
a), b) Generating 2D cross sections from a “point cloud” in the CloudCompare program and c) dimensioning the selected cross section.

Figure 4:

a) Open polyplane of the adit, generated in the RHINO program. b) Rendering of the solid generated in the RHINO program.
a) Open polyplane of the adit, generated in the RHINO program. b) Rendering of the solid generated in the RHINO program.

Figure 5:

“Brick” zone mesh with “octree” density, generated in FLAC3D.
“Brick” zone mesh with “octree” density, generated in FLAC3D.

Figure 6:

Graphical representation of all stages of geometrization of the numerical model, based on the results of laser screening measurements.
Graphical representation of all stages of geometrization of the numerical model, based on the results of laser screening measurements.

Figure 7:

Schematic representation of the numerical model geometrization process based on “point cloud” and FLAC3D using “brick” zones.
Schematic representation of the numerical model geometrization process based on “point cloud” and FLAC3D using “brick” zones.

Code in FISH to generate a grid of “brick” zones with “octree” density_

model new

;generate zones of rock mass around underground excavation

zone create brick size (5,10,5) point 0 (-9, -5.6, -8) point 1 (7,-5.6, -8) point 2 (-9, 1, -8)...

point 3 (-9, -5.6, 7)

;import .stl file with solid of underground excavation

geometry import ‘Excavation.stl’

;density of zones at the contact of the solid surface with rock mass zones

zone densify segment 2 gradient-limit maximum-length 0.1 repeat range geometry-distance ‘Excavation’ gap 1.0 extent

zone group ‘Excavation’ range geometry-space ‘Excavation’ count odd

zone attach by-face
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Inglés
Calendario de la edición:
4 veces al año
Temas de la revista:
Geociencias, Geociencias, otros, Ciencia de los materiales, Compuestos, Materiales porosos, Física, Mecánica y dinámica de fluidos
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