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Potential failure mechanisms (overtopping and piping) were considered. 1D and 2D flood wave propagation were modelled. Inundation maps were produced in order to consider the consequences and the evacuation safety plan. An EAP was implemented considering the dam break analysis results
Potential failure mechanisms (overtopping and piping) were considered. 1D and 2D flood wave propagation were modelled. Inundation maps were produced in order to consider the consequences and the evacuation safety plan. An EAP was implemented considering the dam break analysis results
- Plateau’s water diversion works (sinkholes, ditches, water intake works).
- A 3,5km long diversion tunnel with an inclination ~ 15%.
- Diversion tunnel water outlet (penstock length 3.5 km), electromechanical installations for lighting, gates etc
- Energy dissipation outlet works
It is a rockfill dam with clay core, 77m high and 560m crest length. The total volume of the dam is 2.700.000m3. The dam is founded on gneiss. Dam reservoir’s capacity is 12.000.000m3.
The spillway has discharge flow of 370m3/s (PMF), with maximum width 32m. The energy dissipation is achieved through a flip bucket and a steeling basin.
The cross-section of the diversion tunnel is of horseshoe shape with 150m radius. When the construction is over, it is converted to an intake and reservoir drain works.
The project consists of the following individual works:
- The main embankment dam
- The spillway (collector, spillway canal, flip bucket, plunge pool)
- The diversion works which are combined with the intake and reservoir evacuation works.
Specifically:
- The dam is 48 m heigh with an impermeable core. The embankment cross section is trapezoid with a 2:1 (v:h) slope inclination and upstream-downstream berm provision.
- The diversion works are formed prior to the main fill construction. The 4mx4m rectangular culvert is 377 m long.
The Schinas dam will be regulated along with the Vroutsas dam. The total project is part of the general water resources management project for the island of Karpathos, and also operates as a flood protection scheme.
The works include:
- The Schinas dam is of rockfill type with a clay impervious core .
- Height 31m. Crest length 242m. Crest width 8m.
- Embankment volume 420.000m3
- Total reservoir net volume 1.100.000m3.
- Maximum reservoir water surface 141.000m2.
The Vroutsas dam will be regulated along with the Schinas dam. The total project is part of the general water resources management project for the island of Karpathos, and also operates as a flood protection scheme.
The works include:
- Vroutsas dam is a rockfill dam with an impervious clay core.
- Height 21m. Crest length 272m. Crest width 7m.
- Total dam volume 246.000m3
- Total net reservoir volume 256.000m3
- Maximum reservoir water surface 68.000m2
The project includes the dam, spillway and energy dissipation, water intakes and road access.
The dam and reservoir lies within the private Porto-Carras areas. The main structures are:
- a lean RCC dam with a height of 32m and volume ~40.000 m3
- a spillway with capacity 330m3/s
- a 4 level water intake structure
The reservoir has total capacity ~1.000.000m3
The dam is 56 m heigh. It is of rockfill type with an impervious clay core, upstream and downstream rock cells, spillway, spillway delivery canal and flip bucket
- The Lasithi plateau diversion to the Aposeslemis reservoir includes a TBM excavated 3,5km long and 14% steep tunnel
- The water treatment plants include pre-ozonation, coaggulation, sedimentation, filtering, post-chlorination and sludge treatment
- The main pipelines from the dam to the water treatment plant, ~ 8 km long, consist of D1200 and D1100 steelpipes and 2 tunnels (1590, 2050m long).
