Engineering Laboratory of Spatial Information Technology of Highway Geological Disaster Early Warning in Hunan Province Changsha University of Science&Technology Changsha 410114 ChinaSchool of Traffic&Transportation Engineering Changsha University of Science&Technology Changsha 410114 China;
School of Traffic&Transportation Engineering Changsha University of Science&Technology Changsha 410114 China;
School of Civil Engineering Changsha University of Science&Technology Changsha 410114 China;
Laboratoire de Génie Civil et géo-Environnement Universitéde Lille Universitéde Lille Lille 5900 France;