水平位移监测, 坐标统一, 转换角度, 拱坝, 边坡

Horizontal displacement monitoring is an important item of dam safety monitoring, which has many monitoring methods. The current specification of dam monitoring has a general regulation on the deformation direction of horizontal displacement. In practice, the observation coordinates used in different methods for horizontal displacement monitoring are quite different, which often causes inconvenience, even errors, in the comparative analysis of horizontal displacement. The paper discusses the method and principle of the unification of observation coordinates for horizontal displacement monitoring projects of dams and slopes in Yalong river basin. By popularizing and applying in the basin, the efficiency of dam safety monitoring data analysis has been greatly improved, which provides reference for the revision of relevant specifications and the practices of other electric power enterprises. As well, it promotes the standardized and refined dam safety management.

horizontal displacement monitoring, coordinate unification, conversion angle, arch dam, slope