Journal of Digital Convergence (디지털융복합연구)

The Society of Digital Policy and Management (한국디지털정책학회)
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Evaluation of Accuracy and Utilization of the Drone Photogrammetry for Open-pit Mine Monitoring

노천광산 모니터링을 위한 드론 사진측량의 정확도 및 활용성 평가

  • Park, Joon-Kyu (Department of Civil Engineering, Seoil University) ;
  • Um, Dae-Yong (Department of Civil Engineering, Korea National University of Transportation)
  • 박준규 (서일대학교 토목공학과) ;
  • 엄대용 (한국교통대학교 토목공학과)
  • Received : 2019.10.31
  • Accepted : 2019.12.20
  • Published : 2019.12.28
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Abstract

The development of open-pit mines leads to large-area topographical changes in highland forests and can lead to severe deterioration of forests, requiring continuous monitoring. The drone photogrammetry is performed at a lower altitude than the existing manned aerial photogrammetry, and thus has a relatively high accuracy. The purpose of this study is to construct spatial information of large open pit mine using drone photogrammetry and to evaluate the accuracy and utilization of the results. The accuracy of the drone photogrammetric results was 0.018 ~ 0.063m in the horizontal direction and 0.027m ~ 0.088m in the vertical direction. These results satisfy the permissible accuracy of 1: 1,000 digital topographic map and it can be used for open mine monitoring. The geospatial information of the open pit mine can be used in various ways, and it can be used to monitor the quantitative change of a specific area for time series change through data management by periodic data acquisition. If drone photogrammetry is applied to open-pit mine monitoring in the future, work time and cost can be greatly reduced compared to the conventional GNSS or total station method, and the work efficiency can be greatly improved because more visible data can be generated.

노천광산의 개발은 고지대 산림에 대한 넓은 면적의 지형변화를 가져오며, 심각한 산림 훼손을 야기할 수 있어 지속적인 모니터링이 필요하다. 드론 사진측량은 기존 유인항공 사진측량에 비해 상대적으로 낮은 고도에서 수행되므로 비교적 높은 정확도를 보이며, 지상측량 보다 단위 시간 당 작업 가능 영역이 크다는 장점이 있다. 본 연구에서는 드론 사진측량 기법을 이용하여 대규모 노천광산의 공간정보를 구축하고, 정확도 및 성과물의 활용성을 평가하고자 하였다. 드론 사진측량 성과물의 정확도는 수평방향으로 0.018~0.063m, 수직방향으로 0.027m~0.088m로 나타났으며, 이러한 결과는 1:1,000 수치지형도의 허용정확도를 만족하는 것으로 노천광산 모니터링에 활용이 가능할 것으로 판단된다. 구축된 노천광산의 공간정보는 다양한 활용이 가능하며, 주기적인 촬영에 의한 데이터 관리를 통해 시계열적 변화에 대한 특정 지역의 정량적인 변화를 모니터링 하는데 활용이 가능할 것이다. 향후 향후 노천광산 모니터링을 위한 다양한 현장의 추가적 연구가 필요하며, 이를 통해 실무적 차원의 활용성이 제시된다면 드론 사진측량 방법은 기존의 GNSS나 토털스테이션에 비해 작업시간과 비용을 크게 절감하고, 보다 가시적인 데이터의 생성이 가능하기 때문에 업무의 효율성을 크게 향상시킬 것이다.

Keywords

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