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.

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3D terrestrial laser scanner presentation

  1. 1. 3D LASER SCAN PRESENTATION rev. 1.1 - 26/05/2009 Piazza delle Erbe, 1 • I-38017 Mezzolombardo (TN) Italy Tel. +39 0461.60.55.28 • Fax +39 0461.18.60.182 web: www.rockfalldefence.com • email: info@rockfalldefence.com In collaboration with Gaspari Krueger
  2. 2. 3D LASER SCAN SYSTEM: Terrestrial Laser Scanner USE: Structural and geomechanical survey of rock slopes “ Virtual Views”
  3. 3. 3D LASER SCAN 3D MEASUREMENT OF POLAR COORDINATES
  4. 4. 3D LASER SCAN EQUIPMENT RIEGL LMS-Z420i RESOLUTION 20400 pts/m2 @ 100 m PERFORMANCE 12000 pts/sec @ low scanning rate
  5. 5. 3D LASER SCAN POSITIONING As far as 1000 m SCANNING 3D Model Contour lines Sections Plane dip Areas and volumes calculation Rolling analysis
  6. 6. 3D LASER SCAN BEYOND TYPICAL TOPOGRAPHY TOPOGRAPHY FOR SERVING AND SUPPORTING THE ANALYSES OF SLOPES, MORE SPECIFICALLY ROCK SLOPES
  7. 7. 3D LASER SCAN
  8. 8. 3D LASER SCAN CONTOUR LINES PLANIMETRY OF THE SLOPE ANALYSED RELEVANT SECTIONS OF THE SLOPE ANALYSED FRONT VIEW OF THE SLOPE ANALYSED FRONT VIEW OF THE ROCK SLOPE: EACH COLOR CORRESPONDS TO THE DIFFERENT REFLECTIVITY GRADE OF THE SLOPE ITSELF
  9. 9. DISCONTINUITY STATISTICS DEFINITION OF THE MAIN SETS OF JOINTS STATISTICAL ELABORATION OF DATA VARIATION ON GRADED SCALE OF THE IMMERSION ANGLE GRADIENT DERIVED FROM THE STATISTICAL ANALYSIS DEFINITION OF THE SCHMIDT POLAR DIAGRAM
  10. 10. 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
  11. 11. ACTUAL BENEFITS <ul><li>quick survey; </li></ul><ul><li>security risk reduction: fewer on-site analyses; </li></ul><ul><li>cheapness: fewer specialized interventions; </li></ul><ul><li>detailed analysis of the rock slope; </li></ul><ul><li>results reproduction; </li></ul><ul><li>3D model; </li></ul><ul><li>definition of “virtual” paths and views ; </li></ul><ul><li>integration potential; </li></ul><ul><li>areas calculation. </li></ul>
  12. 12. [email_address] www.rockfalldefence.com +39.0461.60.55.28 THANK YOU FOR YOUR ATTENTION

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