2023 Volume 4 Issue 2 Pages 73-83
The applicability of two methods, SfM and smartphone LiDAR, to the design of countermeasure works for disaster restoration was investigated, with the aim of surveying the post-disaster topography of a slope that collapsed due to an earthquake or rainfall without delaying the construction of emergency countermeasures. The results of the laser survey were assumed to reflect the actual topography, and cross sections were created at the same location from the 3D models created by each method, and their shapes were compared. To confirm whether there are significant differences in the design results of the permanent countermeasures, countermeasures using rock bolt were designed for the cross sections created from each method. The results show that both SfM and Smartphone LiDAR measurement methods can be used for the basic design in terms of measurement accuracy. However, from the viewpoint of measurable range, the application range of smartphone LiDAR is limited in disaster recovery.
