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TERRESTRIAL LIDAR INVESTIGATION OF THE 2004 ROCKSLIDE ALONG PETIT CHAMPLAIN STREET, QUÉBEC CITY (QUEBEC, CANADA) (2008)
In nearly 240 years 53 landslides have occurred along the Quebec City Promontory, causing 88 fatalities mainly by rockfalls. In October 2004 a rockfall reached the road close to the 1889 rockfall event which killed 35 people and injured 30 others. Using a terrestrial Lidar scanner (TLS) a 3D image was created. Seven joint sets were accurately determined in agreement with previous research. The TLS imagery permit the estimation of the volumes involved in the past instabilities and analysis of the mechanisms: a rockslide with several joint sets cutting the rock mass into parallelepiped shaped blocks. Furthermore it shows that this location is prone to future rockfall.
Reference:
4th Canadian Conference on Geohazards : From Causes to Management, J. Locat, D. Perret, D. Turmel, D. Demers et S. Leroueil
4th Canadian Conference on Geohazards : From Causes to Management, J. Locat, D. Perret, D. Turmel, D. Demers et S. Leroueil
Organization:
Institute of Geomatics and Risk Analysis (IGAR), University of Lausanne, Switzerland
Switzerland
Institute of Geomatics and Risk Analysis (IGAR), University of Lausanne, Switzerland
Switzerland
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