THE SEINE- SCHELDT PROJECT Design & Build Harelbeke ir. Ellen Maes, project engineer SMART Rivers 2011, 15th of September 2011
OVERVIEW Waterwegen en Zeekanaal NV Seine-Scheldt an inland navigation project on a European scale with respect for the natural river Lys Design & Build in Harelbeke Aims Procedure
OVERVIEW Waterwegen en Zeekanaal NV Seine-Scheldt an inland navigation project on a European scale with respect for the natural river Lys Design & Build in Harelbeke Aims Procedure
WATERWEGEN EN ZEEKANAAL NV Flandres Wallonia
WATERWEGEN EN ZEEKANAAL NV
WATERWEGEN EN ZEEKANAAL NV Transport of goods over water Water management & Safety against flooding Multifunctionality of waterways
OVERVIEW Waterwegen en Zeekanaal NV Seine-Scheldt an inland navigation project on a European scale with respect for the natural river Lys Design & Build in Harelbeke Aims Procedure
Scheldt bassin Seine bassin?
EUROPEAN DECISIONS (1996-2006) Trans-European Network for Transport (TEN-T) Realisation of missing links 30 priority projects, including Seine-Scheldt France (VNF): new canal Seine Nord Europe Flandres (W&Z): navigability improvements ECMT class Vb (185m x 11.4m x 3.5m)
SEINE- SCHELDT France
EUROPEAN FUNDING Multi-annual work program 2007-2013 International cooperation Seine-Scheldt Intergovernmental Commission (IGC) European Economic Interest Grouping (EEIG) 10% financial aid granted (= 460 mio EUR) Canal Seine Nord Europe (France) Border Lys (France, Walloon and Flemish region) Lys (45km) + canals (26km) in Ghent region (W&Z) Scheldt + canal Condé-Pommeroeul (Wallonia)
SEINE- SCHELDT Improving navigability Design principles 1-way class Vb 2-way smaller vessels
SEINE- SCHELDT Water profile in the Lys river Water depth of 4.5m (now: Lys 3.5m) Maintaining the width at water level => Dredging necessary
SEINE- SCHELDT Improving navigability Minimal lock dimensions 230m x 12.5m x 4.70m
SEINE- SCHELDT Bridges (8) Free height of 7.00m (over 35m width) Necessary for large parts or 3 layers of containers
SEINE- SCHELDT Embankments Mooring places (250-300m long) 1-way traffic with communication through RIS/AIS Waiting zone for large vessels to cross each other Ecological embankments Quay walls
OVERVIEW Waterwegen en Zeekanaal NV Seine-Scheldt an inland navigation project on a European scale with respect for the natural river Lys Design & Build in Harelbeke Aims Procedure
SEINE- SCHELDT River restoration Ecology Landscape Recreation
SEINE- SCHELDT Definition of River Restoration All measures to restore or reinforce the structure and processes which contribute to the dynamic balance in the river ecosystem River ecosystem = river bed + meanders + embankments Dynamic balance: a river is in constant evolution Erosion vs. sedimentation Flooding vs. droughts
HISTORY OF THE LYS Extensive calibration
SEINE- SCHELDT River restoration (1) Reinforcing the dynamics in the ecosystem
SEINE- SCHELDT River restoration (2) Fish migratory routes around locks
SEINE- SCHELDT River restoration (3) Recreational routes with respect for heritage Landscaping
OVERVIEW Waterwegen en Zeekanaal NV Seine-Scheldt an inland navigation project on a European scale with respect for the natural river Lys Design & Build in Harelbeke Aims Procedure
SEINE- SCHELDT Harelbeke
SEINE- SCHELDT IN HARELBEKE (1/3) Deepening of the Lys New lock New weir Restoration of migratory routes for fish Heightening of Kuurnebrug upstream (*) New Hoge Brug downstream New waiting and mooring places Construction of (ecological) embankments Hoge brug (*) not part of D&B Kuurnebrug
SEINE- SCHELDT IN HARELBEKE (2/3) Dredging + protection against erosion Straightening of waterway downstream Hoge Brug New urban quay New industrial quay Geldof Realisation of intake at Banmolens Renovation of hydraulic turbine Banmolens (*) Continuous service road on left bank (+ bridge over intake) Road works on right bank Site Geldof (*) not part of D&B Banmolens
SEINE- SCHELDT IN HARELBEKE (3/3) Spatial planning (without realisation): Passage of the Lys at the new lock & weir Insertion of Marina (Kuurne) Impact assessment on new urban quarter on left bank Overall spatial valorisation of the surroundings (o.o. Bloemmolens) Urban development Bloemmolens
HARELBEKE: MAIN PROJECT ZONE
EXISTING INFRASTRUCTURE (1/3) Banmolens Industrial heritage Reconversion project Lofts Hydraulic turbine Intake needed! Spatial cohesion Fish migration?
EXISTING INFRASTRUCTURE (2/3) Bloemmolens Industrial site until summer 09 Acquisition by W&Z to safeguard space for future lock and weir Possibility to transform into lofts?
EXISTING INFRASTRUCTURE (3/3) Lock and weir
NAVIGATIONAL DEMANDS Traffic prognosis versus lock capacity (1/2) Traffic prognosis Seine-Scheldt (million tonnes) 16 14 12 10 8 6 traffic in the past 4 growth industrial production +1.37% container and waste traffic + new quay walls 2 0 project induced traffic change of route 1997 1999 2001 2003 2005 2007 2009 2011 2013 2015 2017 2019 2021 2023 2025
NAVIGATIONAL DEMANDS Traffic prognosis versus lock capacity (2/2)
NAVIGATIONAL DEMANDS Lock geometry based on class Vb
NAVIGATIONAL DEMANDS Mooring structures Bollards in lock walls Floating construction Continuity of navigation during construction
WATER MANAGEMENT Normal water management: Upstream 10.18m TAW Downstream 8.00m TAW Hydrological data T (year) Q (m³/s) H_up (m TAW) H_dwn (m TAW) 1 145 10.05 8.94 2 165 10.05 9.12 5 174 10.05 9.28 10 180 10.05 9.40 25 190 10.08 9.56 50 199 10.28 9.69 100 208 10.46 9.84 500 240 10.86 10.20 MHW
Variant A CONCEPTUAL PLANS
Variant C CONCEPTUAL PLANS
CONCEPTUAL PLANS Variant A Variant C Acquisitions needed Minimal to none Bloemmolens By-pass weir Not necessary (temporarely) necess. Techn. feasability To be investigated OK Continuity navigation During construction OK Navigability Optimal axis line Broken axis line Bloemmolens Lofts in the future? Demolition needed Variant A: best solution, but achievable? Variant C is achievable, but not as good
FISH MIGRATORY ROUTE By-pass new lock and weir Restoration of river dynamics on meander Integration of Banmolens / Bloemmolens?
BRIDGES Heightening Kuurnebrug (*) Rebuilding Hoge Brug (*) not part of D&B
KUURNEBRUG Palmbout: Opportunity to improve road situation
HOGE BRUG
SPATIAL VISION (1/3)
SPATIAL VISION (2/3) Masterplan Palmbout
SPATIAL VISION (3/3) Masterplan Palmbout
PROJECT ZONE DOWNSTREAM Straightening the curve Urban quay widening Industrial quay Geldof
STRAIGHTENING THE CURVE Max. 42.75m Min. 35m Ca. 8m
INDUSTRIAL QUAY GELDOF Continuity of Geldofs activities Straightening the curve implies building a new quay wall downstream Acquisition planned nearby
EXPLOITATION & MAINTENANCE REQUIREMENTS Life Cycle Management keep the Whole Life Cycle Cost to a minimum Avoid calamities Renewable energy sources Accessibility of the (construction) site
CONCLUSION OF PRELIMINARY STUDY The construction of a new lock and weir at Harelbeke is one of the main challenges for the international Seine-Scheldt project There are many conflicting goals that need to be reconciled An integrated project, by means of a Design & Build procedure is launched, based on two variants
OVERVIEW Waterwegen en Zeekanaal NV Seine-Scheldt an inland navigation project on a European scale with respect for the natural river Lys Design & Build in Harelbeke Aims Procedure
DESIGN & BUILD PROCEDURE Phase 1: 7 candidates 31/05/2011 25/10/2011 Conceptual plans to be provided Phase 2: 3 candidates 20/01/2012 19/06/2012 Detailled design to be provided Phase 3: 3 candidates 01/10/2012 30/10/2012 Price to be offered for approved tender from phase 2
D&B AND DURABILITY (1/2) Lack of M(aintenance) in procedure How to obtain durability? Reduce maintenance costs Reduce exploitation costs Use sustainable forms of energy Minimize downtime of the structure Maximize comfort for navigation Avoid calamities Take the necessary safety measures
D&B AND DURABILITY (2/2) Criteria for ranking tenders Points Total cost 40 Technical quality 20 Nautic and hydraulic quality 15 Life span, exploitation and maintenance cost 10 Spatial quality 5 Nuisance control 5 Planning 5 TOTAL 100
CONCLUSION Complexity of the project Close deadline (2016) D&B procedure Lack of maintenance part in procedure Attention to durability Life Cycle Management
Any questions? More information: www.seineschelde.be Thank you for your attention!