Consulting

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

Consultant for assisting DEYAK in the preparation of the application file and the submition of the relevant application for funding of the Treatment and Disposal of Sewage Sludge works of the Wastewater Treatment Plant (WWTP) of the Municipality of Karditsa. General plans and basic design plans of proposed works. Assistance in Project Data documentation (scope determination, losses estimation report etc).
The Technical Consultant assisted in:

Consultant for assisting DEYAMV in the assesment of current water supply situation in N. Ionia area, water network zoning and calculations, water network separation in water losses control zones (District Metered Areas – DMAs). Control stations and relevant equipment determination. General plans and basic design plans of proposed works. Assistance in Project Data documentation (scope determination, losses estimation report etc).

Consultant for assisting DEYAMV in the assesment of current water supply situation, water network zoning and calculations, water network separation in water losses control zones (District Metered Areas – DMAs). Control stations determination. Master Plan of proposed works.

- 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

 - Gabion wall scour protection works
 - Culvert design and energy dissipation works
 - River training works design

Masterplan for the diversion works considering hydrologic data, environmental issues and hydro-power energy use

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.

A set of necessary works are suggested, along with water conservation and environmental objective target measures.
A full exploration of possible solutions is carried out in the Water Resources Management study, including hydrological and resources modeling.
The works proposed include
    o Dam 56m high, earthfill
    o Dam 32m high, earthfill or RCC
    o Water treatment Works (major) for 100.000 EP
    o Water treatment Works (secondary) for 40.000 EP