3d terrestrial laser scanner presentation

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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

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: info@rockfalldefence.com

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

LASER SCANNER 3D - PRESENTAZIONE

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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.

3D LASER SCANNER - PRESENTATION

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info@rockfalldefence.comwww.rockfalldefence.com

+39.0461.60.55.28

THANK YOU FOR YOUR ATTENTION

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