China Safety Science Journal ›› 2020, Vol. 30 ›› Issue (5): 156-162.doi: 10.16265/j.cnki.issn1003-3033.2020.05.024

• Technology and engineering of disaster prevention and mitigation • Previous Articles     Next Articles

A monitoring method for slope surface displacement combining UAV photography and laser scanning

HE Junyi1, ZHANG Sherong1, WANG Chao1, HUANG Xing2, ZHU Luofang2   

  1. 1. State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China;
    2. Sinohydro Bureau 14. Corporation Limited, Kunming Yunnan 650041, China
  • Received:2020-02-20 Revised:2020-04-15 Online:2020-05-28 Published:2021-01-28

Abstract: In order to improve timeliness of slope surface displacement monitoring, an integrated monitoring method was proposed that combined UAV photography and 3D laser scanning data to improve monitoring accuracy and achieve timely identification of monitoring points and calculation of displacement during slope deformation. The results show that this method based on high-accuracy point cloud contactless measurement can accurately calculate slope deformation with an absolute error being controlled within 1 cm, and its time consumption is about 27 minutes shorter than currently used real time kinematic (RTK), thus improving monitoring efficiency.

Key words: unmanned aerial vehicle (UAV) photography, 3D laser scanning, surface displacement measurement, slope safety, point cloud registration

CLC Number: