FOURIER CORRELATION OF DRĂGAN DAM HORIZONTAL DEFORMATIONS MEASURED TOPOGRAPHICALLY AND BY PHYSICALLY METHODS
Pages 125-128
Alin C. Teușdea, Traian Modog
Abstract
Time deformations monitoring of Drăgan dam is done by physically methods (i.e. inverse pendulum) and topographically methods (i.e. optoelectronic). The two deformations measuring systems, built up by these two methods, are different. The existence of different conclusions drawn from these deformations reveals the correlation importance of the two deformation systems. If there is a correlation then the deformations values differences will be provided by measuring errors; if the correlation is not present then the deformations values differences will be provided by coarse errors. This paper is intended to identify the problems from the presented systems, that provides wrong deformations and to exclude them. Fourier analysis [1-3] is used to generate the correlations of deformations measured by these two different methods. There are presented both time correlations for 1D deformations of single measuring point, named (1D along H) correlation, and time correlations for vertical blocs of measuring points (i.e. plots) of the dam, named (2D+t) correlation