3D terrestrial laser scanner presentation
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3D LASER SCANNER - PRESENTATION 1 3D LASER SCAN PRESENTATION 1 - 26/05/2009 Piazza delle Erbe, 1 • I-38017 Mezzolombardo Tel. +39 0461.60.55.28 • Fax +39 0461 web: www.rockfalldefence.com • email: info@rockfalld In collaboration with Gaspari Krueger
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The terrestrial laser scanner is a technology that has revolutionized the field of structural and geomechanical survey of rock slopes. The equipment allows the reconstruction of 3D models by recording multiple scans of the slopes under investigation. The instrumentation, generating a laser pulse, records part of the signal as reflected by the object struck. Each point is then identified with three coordinates x, y, z, while a color is associated to the level of reflectivity of the material analyzed.
Transcript of 3D terrestrial laser scanner presentation
3D LASER SCANNER - PRESENTATION
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3D LASER SCANPRESENTATION
rev. 1.1 - 26/05/2009 Piazza delle Erbe, 1 • I-38017 Mezzolombardo (TN) ItalyTel. +39 0461.60.55.28 • Fax +39 0461.18.60.182
web: www.rockfalldefence.com • email: [email protected]
In collaboration with Gaspari Krueger
LASER SCANNER 3D - PRESENTAZIONE
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3D LASER SCAN
SYSTEM:Terrestrial Laser Scanner
USE:Structural and geomechanical survey of
rock slopes“Virtual Views”
LASER SCANNER 3D - PRESENTAZIONE
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3D LASER SCAN
3D MEASUREMENT OF POLAR COORDINATES
LASER SCANNER 3D - PRESENTAZIONE
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3D LASER SCAN
EQUIPMENT
RIEGL LMS-Z420i
RESOLUTION20400 pts/m2 @ 100 m
PERFORMANCE12000 pts/sec @ low
scanning rate
LASER SCANNER 3D - PRESENTAZIONE
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3D LASER SCAN
POSITIONING
As far as 1000 m
SCANNING3D Model
Contour linesSectionsPlane dip
Areas and volumes calculationRolling analysis
LASER SCANNER 3D - PRESENTAZIONE
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3D LASER SCAN
BEYOND
TYPICAL TOPOGRAPHY
TOPOGRAPHY FOR SERVING AND SUPPORTING THE ANALYSES OF SLOPES,
MORE SPECIFICALLY ROCK SLOPES
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3D LASER SCAN
LASER SCANNER 3D - PRESENTAZIONE
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3D LASER SCAN
CONTOUR LINES PLANIMETRY OF THE SLOPE ANALYSED RELEVANT SECTIONS OF THE SLOPE ANALYSED
FRONT VIEW OF THE SLOPE ANALYSEDFRONT VIEW OF THE ROCK SLOPE: EACH COLOR CORRESPONDS TO THE DIFFERENT REFLECTIVITY GRADE OF THE SLOPE ITSELF
LASER SCANNER 3D - PRESENTAZIONE
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DISCONTINUITY STATISTICS
DEFINITION OF THE MAIN SETS OF JOINTS
STATISTICAL ELABORATION OF DATAVARIATION ON GRADED SCALE OF THE IMMERSION ANGLE GRADIENT DERIVED FROM THE STATISTICAL ANALYSIS
DEFINITION OF THE SCHMIDT POLAR DIAGRAM
LASER SCANNER 3D - PRESENTAZIONE
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VOLUMES CALCULATION
1 – HIGHLIGHTING THE AREA TO BE STUDIED
2- AUTOMATIC CALCULATION OF THE VOLUME
3 – DEFINING THE GEOMETRY OF THE BOULDER
4- SECTION PLANES OF THE BOULDER
5 – BOULDER AREAS FOR THE DIFFERENT SECTION PLANES
LASER SCANNER 3D - PRESENTAZIONE
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ACTUAL BENEFITS
- quick survey;- security risk reduction: fewer on-site analyses;- cheapness: fewer specialized interventions;- detailed analysis of the rock slope; - results reproduction;- 3D model;- definition of “virtual” paths and views;- integration potential;- areas calculation.
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