Analysis of earthdam monitoring data

To understand the long-term behaviour of a dam, it is essential to carefully interpret the measured data, in order to be able to distinguish between the effects of factors such as drift, irreversible events and the ageing of the dam and the effects of other factors not involving ageing processes. The Hydrostatic-Season-Time (HST) model is presented in this paper. The main components of the basic model are: the effect of the reservoir level; the seasonal effect; and time drift. The rainfall must be taken into account when analysing hydraulic related measurements. Piezometric levels of a homogeneous embankment dam (15.5 m high) are analysed, as well as variations of the measurements of three 3D crackmeters, installed in a spillway. These case studies are interpreted. Résumé français: Analyse de mesures d'auscultation de barrages en terre Pour comprendre le comportement à long terme d'un barrage, il est essentiel d'interpréter soigneusement les mesures d'auscultation, afin de pouvoir distinguer les effets des facteurs tels que la dérive, les événements irréversibles et le vieillissement du barrage, des effet