Impact of the 2010–2011 La Niña Weather Phenomenon on Terrain Stability and Utilization of Long Tunnels for Mitigation Along the Ruta del Sol Project Alignment in Colombia, South America

摘要

The Ruta del Sol Road Project is located in the seismically active Eastern Cordillera of Colombia,rnSouth America and includes approximately 3.2 kilometers of tunnels between the towns of Villeta and Guaduasrnthrough an area extremely prone to landslides. Between 2010 and 2011, extended periods of rainfall associatedrnwith the La Niña weather phenomenon affected the region and extensive slope failures occurred along thernProject alignment. Gall Zeidler Consultants analyzed the correlation between La Niña on the geotechnicalrnconditions and the possible need for a redesign of the alignment, for which additional long tunnels may presentrnthe most preferable alternative.