Landslide study using terrestrial laser scanner (LiDAR) analysis

Abstract

In Reina del Cisne (Cuenca-Ecuador) a dynamic sliding process was created due to a cut that was applied at the beginning of the year 2018 to the hillside without technical considerations for the construction of an access road to a house in the sector. From May 2018 to January 2019, period analyzed in this work, the landslide has caused total structural damage (dwellings near the hillside) or partial (houses away from the hillside) and the total collapse of the path that caused the landslide. The field visits from the month of May 2018 and the comparison with CloudCompare of the clouds of points obtained with terrestrial laser scanner (LiDAR) between the months of May 2018 and January 2019 (house) and December 2018 and January 2019 (profiles) have highlighted the high activity of this gliding. It has been analyzed three-dimensionally several profiles along the landslide, in addition to an affected house, where they have experienced phenomena such as: sinking and tilting to slope down with values from 3 cm to 30 cm (profiles) in 30 days to 2.28 m (house) in 230 days.