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UAV Utilization for Efficient Estimation of Earthwork Volume Based on DEM

  • Seong, Jonghyeun (Dept. of Civil Engineering, Chungnam National University) ;
  • Cho, Sun Il (Kumsung Baekjoe Construction Corporation) ;
  • Xu, Chunxu (Dept. of Surveying and Mapping Science and Engineering, Shandong Agricultural University) ;
  • Yun, Hee Cheon (Dept. of Civil Engineering, Chungnam National University)
  • Received : 2021.09.13
  • Accepted : 2021.10.20
  • Published : 2021.10.31

Abstract

In the era of the 4th industrial revolution, smart construction, in which new technologies such as UAV (Unmanned Aerial Vehicle) are fused, is attracting attention in the construction field. However, the method of estimating earthwork volume using DEM generated by UAV survey according to practical regulations such as construction design guidelines or standard product counting is not officially recognized and needs to be improved. In this study, different types of UAV were measured and DEM was obtained using this data. The DEM (Digital Elevation Model) thus obtained was analyzed for changes in the amount of earthworks according to the size of the GSD (Ground Sample Distance). In addition, the amount of earthwork by DEM and the amount of earthwork by existing design drawings were compared and analyzed. As a result of the study, it was suggested that images with a GSD of 5cm or less are effective to generate a high-quality DEM. Next, as a result of comparing the earthwork volume calculation method using DEM and the earthwork volume based on the existing 2D design drawings, a difference of about 1% was shown. In addition, when the design earthwork amount calculated by the double-section averaging method was compared with the designed earthwork amount using DEM data by UAV survey, a difference of about 1% was found. Therefore, it is suggested that the method of calculating the amount of earthworks using UAV is an efficient method that can replace the existing method.

Keywords

Acknowledgement

This work was supported by research fund of Chungnam National University

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