Seite - 1354 - in Book of Full Papers - Symposium Hydro Engineering

data provides a good example for the theoretical considerations discussed in Chapter 2. Fig. 4: Cross-section of Feistritzbach Dam [4] (1) AC core; (2) filter; (3) fine-graded zone; (4) upstream and (5) downstream shell; (6) horizontal seepage section; (7) drainage toe; (8) grouting gallery; (9) grout curtain Figure 5 shows the settlements of the dam for different stages. The magnitude of the construction settlements in the core was about 55 cm and increased up to 80 cm before the impounding started. The settlements after construction were distributed equally throughout the entire cross section of the dam. During first impounding, the settlements in the upstream dam shoulder increased up to 95 cm whereas the settlements downstream of the core only increased up to 87 cm. During impounding, almost no significant horizontal core deformations were observed until the reservoir level reached 2/3 of its maximum. Above, the horizontal core deformation amounts up to 10 cm to the downstream leading to a decreasing relative densitiy in the upstream adjacent zone. (a) Normal reservoir level (b) Minimal operating level (c) Floating shaft (1) End of construction (2) Beginning impounding (3) End of first impounding (4) First drawdown (5) Results 1996 (6) Results 2004 Fig. 5: Settlements of Feistritzbach Dam [5] 1354