TUNNEL GROUND SURFACE DISPLACEMENT MEASUREMENTS BY USING FULLY-AUTONOMOUS UAV WITH BVLOS (BEYOND VISUAL LINE OF SIGHT) OPERATIONS WAIVER

Abstract

In recent years, UAVs have rapidly become popular in construction work. However, UAVs have not been applied to high-frequency measurements such as deformation monitoring because aerial photography by UAVs usually require two or more operators and various ancillary tasks. For solving the above problems, we adopted a fully-autonomous UAV capable of automatic take-off and landing and automatic charging. We attempted monitoring tunnel ground surface deformation and measuring displacement using the fully-autonomous UAV with BVLOS operations waiver in the " Reiwa 2 Hokusei Bypass Sakabe Tunnel Construction ". In this paper, we report the remote and unmanned operation method and the results of accuracy verification of displacement measurement.