Page - 1028 - in Book of Full Papers - Symposium Hydro Engineering

Fig. 8 Displacements measured and computed on the subvertical rod extensometer EF9, located downstream on the bottom of the central block 17-18 at 116.3 m elevation, from July 2014 to January 2017 4. CONCLUSIONS The mathematical methodologies used to analyse and interpret the structural behaviour of the Baixo Sabor dam during the first filling of the reservoir have proven to be adequate for the intended purposes, in particular regarding to the consideration of both the instantaneous and the differed effects of the main loads, namely the hydrostatic pressure and the temperature variations. Mention should be done to the suitable evaluation of the deformability characteristics of the dam’s concrete and of the rock mass foundation, as well as the thermal variations in the dam’s body, that allowed a good adjustment between the monitoring data and the structural model results. The adequate planning of the first filling of the reservoir and the results of both the inspections and the behaviour analysis and interpretation made it possible to carry out a proper monitoring and safety control of the dam during this critical period. The overall results obtained show the good performance of the dam and constitute a reference state for the observation and safety control of the dam over time. 140 150 160 170 180 190 200 210 220 230 240 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 Extensómetro de fundação EF9 -Jusante inclinado Bloco 17-18 -Cota 116,25 m EF9 -Rod 1 with 79.8 m (monitoring) EF9 -Rod 2 with 22.1 m (monitoring) EF9 -Rod 1 (computed) EF9 -Rod 2 (computed) Reservoir water level (m)(mm) 1028