• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.27 no.1
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• pp.645-655
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• 2009

Deformations of the dam have been monitored by control points buried in the upper and lower dam of Samrangjin pumped storage power plant. The horizontal and vertical deformation observations performed in 1997, 2002, 2007 are to identity movements of the dam body by comparing and analyzing control points. For that reason, it was difficult to analyze movements of the dam in detail. Therefore, this research has observed surface of the dam using terrestrial laser scanner and estimate movements of the dam by comparing and analyzing scanned and designed surfaces of the dam since building completion. Vertical deformation of upper dam took place in the middle of ridge of dam, maximum cross section, up to 1.5m. In the middle and middle bottom of the downstream slope, vertical deformation was produced 0.75m around SP4-2 point and 0.5m around SP4-4 point. The maximum subsidence of vertical deformation in the lower dam took place in the middle of ridge of dam and upper part of upstream slope and subsidence was analyzed from -0.4 to -1.0m respectively. The result of this research can be used as initial observation to analyze whole movement of the dam in the future.