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Breakwaters and closure dams: chapter 4
 

Breakwaters and closure dams: chapter 4

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    Breakwaters and closure dams: chapter 4 Breakwaters and closure dams: chapter 4 Presentation Transcript

    • Chapter 4: Considerations at systemslevelct5308 Breakwaters and Closure DamsH.J. VerhagenApril 12, 2012 1Faculty of Civil Engineering and GeosciencesVermelding onderdeel organisatieSection Hydraulic Engineering
    • Functions of breakwaters• protection against waves • protection of port and shipping under normal conditions • protection of ports under extreme conditions • shore protection• guiding of currents• protection against shoaling• provision of dock and quay facilitiesApril 12, 2012 2
    • Allowable wave heights Type of vessel Maximum Hs in m at the berth Pleasure craft 0.15 – 0.25 Fishing vessel 0.40 Dredges and dredge barges 0.80 – 1.00 General cargo (<30.000 dwt) 1.00 – 1.25 Dry bulk cargo (30.000 dwt) 1.00 – 1.25 Dry bulk cargo (<100.000 dwt) 1.50 Oil tankers (<30.000 dwt) 1.00 – 1.25 Oil tankers (<200.000 dwt) 1.50 – 2.50 Oil tankers (<300.000 dwt) 2.50 – 3.00 Passenger vessels 0.70 data from Thoresen, 1988April 12, 2012 3
    • harbour of MarseillesApril 12, 2012 4
    • Breakwater at the Europort entranceApril 12, 2012 5
    • A system of detached breakwaters atFiumicino, ItalyApril 12, 2012 6
    • Flow pattern at the Europort entranceApril 12, 2012 7
    • Entrance to the port of AbidjanApril 12, 2012 8
    • Flow pattern at the port of AbidjanApril 12, 2012 9
    • Port and breakwaters of IJmuidenApril 12, 2012 10
    • Siltation at the entrance to the port of Paradip, IndiaApril 12, 2012 11
    • Functions of closure dams• land reclamation• shortening of the length of sea defence• creating fresh water reservoir• creation of tidal energy basin• creation of a fixed level harbour basin• creation of a construction dock• providing road or railroad• repair a dike breach• control of upland flow• creating fish ponds• cutting of river bendsApril 12, 2012 12
    • The Rhine Meuse delta before theyear 1000April 12, 2012 13
    • Situation after damming the riverMeuseApril 12, 2012 14
    • Situation after the St.Elisabeth’sFloodApril 12, 2012 15
    • The Biesbosch areaApril 12, 2012 16
    • The Afsluitdijk and the tidal rangeApril 12, 2012 17
    • April 12, 2012 18