Deformation monitoring of dams has been widely used for its safety management. In this study, improvement of the deformation monitoring with a total station was suggested by calibrating coordinate of a total station. The position of TS was initially measured through 3∼4 given points and the coordinate of total station was considered as an absolute value. However, when the targeting point was measured by the total station, the coordinate of the total station was changed and it means that deformation of the total station was also occurred. Therefore, the deformation of dams was increased by deformation of the total station. Before the calibrating, the deformation of the target point located at 50m from total station was ±20mm. After the calibrating, the deformation was decreased by ±2mm.

• 차기욱(한국수자원공사 댐‧유역관리처 처장, 공학박사) | Cha, Kee-Uk 교신저자
• 강기천(K-water 댐‧유역관리처 선임위원, 공학박사) | Kang, Gi-Chun
• 임연출(㈜바이텍코리아 SI기술부 차장) | Yim, Yeon-Chool