Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Landslide in the Permafrost near a Ministère des Transports du Québec Infrastructure in Salluit and Stabilization Work
In 2005, a landslide was observed in an erosion gully in marine clay deposits near the Salluit airport access road, directly at the embankment toe. Alteration of the drainage following development in the area seems to have accelerated erosion at the base of the gully. Progressive slide first affected the steeper lower part of the natural slope, and then the active layer in the gentler upper part broke off and slid to the bottom of the gully. By 2008, it affected more than half of the natural slope. In June 2010, stabilization works with rockfill were recommended in the near future. The zone to be stabilizes was extended 40 m downstream of the landslide, where fissures were also observed in the natural slope. Before the works even started, a landslide occurred in the downstream fissured slope on August 22nd, 2010. Contrary to the slow, progressive first landslide, this one took place in one or two large movements of material that carried most of the active layer from the embankment toe to the bottom of the gully. The stabilization that was recommended in June 2010 to stop the progression became an urgent matter to ensure the sustainability of the road, and optimized rockfill was put into place following the latest landslide. A detailed schedule was established for the work to be carried out safely, especially in the remoulded active layer. The events of 2010 prompted the MTQ to increase its monitoring of the existing Salluit airport access road built mainly on marine clay deposits.
Landslide in the Permafrost near a Ministère des Transports du Québec Infrastructure in Salluit and Stabilization Work
In 2005, a landslide was observed in an erosion gully in marine clay deposits near the Salluit airport access road, directly at the embankment toe. Alteration of the drainage following development in the area seems to have accelerated erosion at the base of the gully. Progressive slide first affected the steeper lower part of the natural slope, and then the active layer in the gentler upper part broke off and slid to the bottom of the gully. By 2008, it affected more than half of the natural slope. In June 2010, stabilization works with rockfill were recommended in the near future. The zone to be stabilizes was extended 40 m downstream of the landslide, where fissures were also observed in the natural slope. Before the works even started, a landslide occurred in the downstream fissured slope on August 22nd, 2010. Contrary to the slow, progressive first landslide, this one took place in one or two large movements of material that carried most of the active layer from the embankment toe to the bottom of the gully. The stabilization that was recommended in June 2010 to stop the progression became an urgent matter to ensure the sustainability of the road, and optimized rockfill was put into place following the latest landslide. A detailed schedule was established for the work to be carried out safely, especially in the remoulded active layer. The events of 2010 prompted the MTQ to increase its monitoring of the existing Salluit airport access road built mainly on marine clay deposits.
Landslide in the Permafrost near a Ministère des Transports du Québec Infrastructure in Salluit and Stabilization Work
Boucher, M. (Autor:in) / Grondin, G. (Autor:in) / Paquet-Bouchard, B. (Autor:in)
Cold Regions Engineering 2012 ; 2012 ; Quebec City, Canada
Cold Regions Engineering 2012 ; 779-788
17.08.2012
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
British Library Online Contents | 1997
MA-030 L'EXPERIENCE DU MINISTERE DES TRANSPORTS DU QUEBEC AVEC LE BETON AUTOPLACANT (1997-2001)
| British Library Conference Proceedings | 2002
| British Library Conference Proceedings | 2002
The St. Albans landslide near Quebec
Engineering Index Backfile | 1894