The used of uav-based photogrammetry for discontinuity mapping at hume cement quarry, malim nawar Perak
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Date
2018-05
Authors
Solihin Yaacob
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Abstract
This study aimed to conduct the geotechnical mapping of discontinuities, to
analyze the photogrammetry method and to understand the criteria needed for
geological mapping. An Unmanned Aerial Vehicle (UAV) was used for geotechnical
mapping while Agisoft Photoscan 3-D, MATLAB, CloudCompare and Rocscience
Software was used to analyze the photogrammetry method as comparison with
conventional mapping. The study site is at Hume Cement quarry site where 26
survey windows were identified comprise the whole quarry pit with each window
involved approximately 30 m parameter length. In total of 26 windows, rose diagram
was used to represent the dominant joint set in each window. So, it can be concluded
that the major orientation of the discontinuity feature for this study site is in NNW SSE direction. Furthermore, photogrammetry method also provides a more reliable
result compared to conventional mapping, while the results of rosette diagram for
UAV method showed a similarities compared to the conventional mapping. As a
conclusion, photogrammetry method with advantages of UAV using drone
technology is recommended because it allows more accurate characterization of
rock mass.