intake tunnel

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4, Thalias Str. & 109, Kimis Ave., P.C. 151 22, Maroussi, AthensTel.: + 30 210 6837490, + 30 210 6897040, + 30 210 6835858Fax: + 30 210 6837499, e-mail: [email protected], www.omikronkappa.gr

Platanos & Trapeza Railway Tunnels andassociated Hydraulic Drainage TunnelAthens - Patras High Speed Railway Line, Section Kiato - EgioCentral Greece

Project Platanos Railway Tunnel Trapeza Railway Tunnel Water drainage tunnel

Construction CostTotal cost: approx. 100 m.

Project ScheduleDesign: 2007 - 2009Construction: 2007 -

Project DescriptionSection of Platanos Railway TunnelTunnels length: 500mExcavation Cross Section: 140m2

- Section of Trapeza Railway TunnelTunnel s length: 2.715mExcavation Cross Section: 140m2

- Water Drainage TunnelTunnel s length: 200mCross Section: 7m2

Method of tunnel excavationNATM Use of mechanical meansTBM (Tunnel Boring Machine) for Trapeza Tunnel pipe jacking

Final LiningReinforced concrete C30/37 and precast reinforced concretesegments

GeologyMarls, conglomerates, marine depositsMaximum overburden of Platanos Tunnel: 90mMaximum overburden of Trapeza Tunnel: 90mMaximum overburden of Water Drainage Tunnel: 30m

Our ServicesDetailed Final Geotechnical & Structural Design

Construction Details Use of forepoles and spiles Excavation in two phases Pipe jacking technique

ClientAOR S.A.

View of Trapeza tunnels entrance portal

Excavation geometry of top heading

Tunnels face Grey Marl


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Hydraulic TunnelKostarakos Hydraulic Diversion TunnelEgnatia Highway, Section 3.3 3.5.1Northern Greece

ProjectHydraulic tunnel

Construction costTotal cost: approx. 2,2 m.

Project ScheduleDesign: 2006 - 2007Construction: 2007

Project DescriptionHydraulic diversion tunnel of Kostarakos streamLength: 310mMaximum overburden: 45mEffective cross section: 19,8m2

Excavation MethodNATM Drilling & blasting and mechanical means

Final LiningReinforced concrete C20/25 in tunnels sidesGunite C25/30 in crown section

GeologyPeridotites, serpentinized peridotites, serpentinites, tectonicmelange

Our Services Final Geological Geotechnical Design Detailed Final Geotechnical & Structural Design of tunnel

and portals

Construction Details Use of forepoles and spiles Stiff temporary support by using steel sets of H type Support by use of anchors and shotcrete

Closed ring solutions

ClientAKTOR S.A.

General view of entrance portal

Peridotites seprentinized peridotites

Typical cross section of finallining


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Hydraulic TunnelHydraulic Drainage Tunnel for the stabilizationof the landslide in the Big Cut areaEgnatia Highway, Section 3.3 3.5.1Northern Greece


Construction costTotal cost: approx. 3 m.

Project ScheduleDesign: 2008Construction: 2008

Project DescriptionHydraulic drainage tunnel for the stabilization of the landslidein the Big Cut areaLength: 520mMaximum overburden: 100mEffective cross section: 19,8m2

Excavation MethodNATM Mechanical means

Final LiningReinforced concrete C20/25

GeologyPeridotites, serpentinized peridotites, serpentinites, tectonicmelange

Our ServicesDetailed Final Geotechnical & Structural of the tunnel andportals

Construction Details Use of steel sets of HEB type Use of anchors and shotcrete Micropiles for shotcrete shell's foundation improvement Closed ring solutions

ClientAKTOR S.A.

Hydraulic drainage tunnel entrance portal

Excavated tunnel

Cross section of excavation andprimary support


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S1, S2, Vrachasi Hydraulic TunnelsAposelemi Water DamCrete, Southern Greece

ProjectHydraulic Tunnels for water transfer

Construction CostTotal Cost: approx. 15 m.

Project ScheduleDesign: 2007 - 2010Construction: 2008 - 2012

Project DescriptionHydraulic Tunnels for the transfer of water (S1 & S2 Tunnels)from Aposelemi Dam at the refineries and from there at SaintNikolaos (Vrachasi Tunnel)

S1 Hydraulic Tunnel length: 1,590mS2 Hydraulic Tunnel length: 2,050mVrachasi Hydraulic Tunnel length: 680m

Tunnels Effective Cross Section: 8.50m2

Excavation Method Drilling and blasting mechanical means

GeologyPhyllites, schists, limestones

Our Services Geological Geotechnical Evaluation Detailed Final Geotechnical and Structural Design

Construction details Use of spiles Final lining from shotcrete at tunnels top heading and

reinforced concrete at tunnels sidewalls

ClientAKTOR S.A.

Tunnel S1 Exit

Tunnel S1 Entrance View

Tunnel S2 Exit

Tunnel S2 Entrance


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Hydraulic WorksAposelemi Water Dam Water intake structureCrete, Southern Greece

ProjectWater intake structure final design

Construction CostTotal Construction Cost: approx. 2 m.


Project DescriptionWater intake structure of horse-shoe shape cross section andconnection with the swerve culvert

Cross Section: 4.50mMax. Height: 4.00mLength: 150m

GeologyWeathered phyllites, phyllites

Our Services Design and dimensioning of water intake structure Design and dimensioning of the connection between water

intake structure and diversion culvert Design and dimensioning of water intake chamber Detailed final geotechnical and structural design

ClientJ/V TOMI SA AKTOR SA

View of the water intake structure

Typical cross section of the structure

Structural analysis model


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Dams Hydraulic WorksRecharge Dams and flood protection worksNorthern EmiratesUnited Arab Emirates

ProjectUpdate of studies and designs for new recharge dams and barriers, execution ofsafety audit of existing dams, design of new recharge structures and other floodprotection works

Construction CostTotal Cost: approx. 100 m.

Project ScheduleDesign: 2011Construction: 2012 - 2015

Project Description Design and review of approx. 80 recharge and energy dissipation structures, flood

protection and water diversion works, in various locations Safety Audit of existing Ham Dam upstream of Fujairah City and Bih Dam upstream

Ras Al Khaimah City Dams catchment areas: 0.5km2 105km2

Dams reservoir volumes: 2,500m3 243,000m3

Dams crest lengths: 10m 2,800m Dams heights (wadi bed dam crest): 2.5m 18m Types of Dams: Concrete gravity dams

Embankment damsGabion drop structures

Approximately 20km of flood protection channels Erosion and slope protection works in wadies Energy dissipation and sediment retention structures Other retaining works for the protection of farms and houses in the reservoir area of

the recharge dams

GeologyGravely alluvium, sandy-gravely old wadi and terrestrial terrace deposits, igneousrocks of ophiolitic complex (harzburgites, peridotites, gabbros), metamorphic schists,cherts, limestones, claystones, siltstones

Our Services Study, review and evaluation of existing studies and designs Assessment and evaluation of historic storms in the wider Arabic Peninsula region Extensive reconnaissance of each dam site to establish suitability Hydrologic and hydraulic assessment and evaluation of each site Geological, hydrogeological and geotechnical assessment of each dam site Design of the required technical solutions, including the relevant hydrologic,

hydraulic, structural and geotechnical calculations Elaboration of Tender Documents (bill of quantities, technical specifications, overview

of construction cost) Execution of Preliminary Designs, Final Designs and construction drawings

Construction Details Concrete gravity dams with upstream and downstream slope of 1:1 (V:H) in order to

sustain the greater than hydrostatic force applied in the dams body Ogee and stair shaped spilling section for concrete dams Embankment dams with upstream slope of 1:2 (V:H) and downstream slope of 1:4

(V:H) Rock armor protection in the downstream slope of embankment dams Geomembrane in the upstream slope of embankment dams and gabion drop

structures to prevent piping Bottom outlets provided in all recharge structures

ClientConsultant HSS United Arab Emirates

View of the existing Ham Dam in Fujairah City

View of embankment dams

View of gabion drop structure


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Mining - Hydraulic TunnelKokkinolakkas Diversion TunnelMavres Petres Mine, ChalkidikiNorthern Greece

ProjectDesign of Kokkinolakkas diversion tunnel for the protection of drystacking Tailings Management Facility area, produced at MavresPetres and Olympiada underground mixed sulphide ore mines



Project DescriptionDiversion tunnel: 1,142m total lengthMean longitudinal inclination: 6,5%Effective cross section: 37, 2 m2

Geology Amphibolites Amphibolitic gneisses

Excavation Method Drilling & blasting mechanical meansFinal lining with reinforced concrete

Our ServicesFinal Technical design for the construction of Kokkinolakkasdiversion tunnel (according to articles No 4 and 101 of the GreekMining Regulation)

ClientHELLAS GOLD S.A.

Water isolation grouting rings

3D simulation analysis model forthe structure in tunnels entrance

portal

Typical cross section of excavation andprimary support


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Hydraulic TunnelYacambu Quibor TunnelVenezuela


Project ScheduleDesign: 2003Construction: 2003-2004

Project DescriptionHydraulic tunnel passing through the AndesLength: 25000m

Cross section: 30m2

Method of tunnel excavationNATM Mechanical excavation, drilling and blasting

Final LiningReinforced shotcrete

GeologySandstones, phyllites and limestonesSqueezing conditionsMax. overburden: 1200m

Our Services Detailed Final Design of final lining, in specific sections of the tunnel Designs carried out in association with Dr Evert Hoek

Construction DetailsSteel sets with sliding joints in order to confront severe squeezingproblems

ClientSISTEMA HIDRAULICO YACAMBU QUIBOR S.A.

Yacambu Quibor tunnel

View from the underground excavation face

Entrance portal


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Hydraulic TunnelOlympic Village TunnelAthens, Greece



Project ScheduleDesign: 2003Construction: 2003-2004

Project DescriptionHydraulic tunnel for the flood protection of the Olympic Village,application of pipe jacking techniqueTotal length: 320mCross section: 20m2

Method of tunnel excavationPipe Jacking

GeologyMarls, clays, gravels

Our Services Detailed Final Geotechnical & Structural Design of the tunnel with

pipe jacking technique Detail Final Design of construction shafts

ClientAKTOR S.A.

Breakthrough of the pipe jacking

Entrance of the pipe jacking through theconstruction shaft


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ProjectWater supply Spillover Discharge tunnel of dam and relevant worksDam Inundation BasinDam road works


Project ScheduleDesign: 2005 - 2006Construction: 2005 - today

Project Description Water supply Spillover Discharge tunnel

Length: 1.180mEffective cross section: 14,3m2

Works of entrance and exit water supply tunnel and design of watersupply tower

Dam basin water flush- Reservoir length in the upper flood level: ~ 1.900m- Reservoir width in the upper flood level: ~ 120m- Reservoir capacity in the upper flood level: ~ 2,9m3

- Reservoir capacity in the upper storage level: ~ 2,6m3

GeologyIntercalations of schists and sandstonesThick bedded sandstonesSurface failures and creepMax. overburden of water supply tunnel: 126m

Our Services Execution and evaluation of geotechnical investigation program Design of water supply Spillover Discharge tunnel Relevant tunnel works:

- Water supply tower with valves in 4 different levels- Technical tunnel inflow- Tunnel gates placed in vertical shaft approx. 90m before the exit

portal- Vertical wall after the tunnel exit portal, for the energy diffusion- Technical basin of calmness

- Non-controlled spillover for the water outflow from the technicalbasin to the natural canal- Drinking water shaft in trench underneath the tunnel- Water supply outflow downstream the tunnel towards the control

valves house Flood wave study downstream the water supply spillover

discharge tunnel, along the new receiver Specific techno-geological study of slopes stability of inundation

basin

ClientAKTOR S.A.

Hydraulic WorkSetta Manikia DamEvoiaCentral Greece

View of dam, of spillover and of section of water flushbasin

View of dam


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Financing Procedures of E.U.Flood Protection MeasuresSlovakiaCentral Europe

ProjectServices and Technical Assistance for the financing of highpriority flood protection measures from the Cohesion Fundof the European Union

Construction CostEstimated total cost: approx. 100 m.

Project ScheduleDesign: 2004 - 2005Construction: The works are under tender evaluation

Project DescriptionDesign of flood protection measures in the urban areas ofBratislava, Banska, Bystrica & Presov, in the frame of financingprocedures from E.U.

Bratislava: Design of levees and movableelements

Banska Bystrica: Design of hydraulic flood diversiontunnel and a diversion weir

Presov: Design of levees andriverbed modulation

Our Services Feasibility studies Environmental Impact Assessment Studies Elaboration of the Applications for financing from the

Cohesion Fund of the EU Tender Documents Land Permit Studies Services jointly carried out by OMIKRON KAPPA CONSULTING

& INGENIEURBURO EDR GmbH, Munich

ClientSlovak Water Management Enterprise (SVP)

View of Bratislava during the floods of 2002

View of Banska Bystrica during the floods of 1974

View of Presov during the floods of 2003