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Safety: Example Schelde

Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary

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Page 1: Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary

Safety: Example Schelde

Page 2: Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary

The SIGMAPLAN 1977

Page 3: Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary

Antwerpen : overschrijdingslijn hoogwaterstanden

3697223

6

7

8

9

10

1 10 100 1,000 10,000

Terugkeerperiode (jaar)

Data 61-75 (Theuns) Data 71-90 (Claessens) Data 71-97 (Taverniers) Prognose (2050) Prognose (2100)

Upgrade of safety level is necessary

Page 4: Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary

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GENT

BOOM

LIERTEMSE

ZEMST

DUFFELITEGEM

SCHELLE

LOKEREN

VIERSEL

MECHELEN

WETTEREN

OOSTERLO

WERCHTER

ANTWERPEN

VILVOORDE

ZANDVLIET

DENDERMONDE

GROBBENDONK

The SIGMAPLAN 1977

a) Heithening and strengthening dikesb) aanleg gecontroleerde overstromingsgebiedenc) bouw stormvloedkering te Oosterweel

zone 1 : 11,00 m TAW

zone 2 : 8,35 m TAW

zone 3 : 8,00 m TAW

Page 5: Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary

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GENT

BOOM

LIERTEMSE

ZEMST

DUFFELITEGEM

SCHELLE

LOKEREN

VIERSEL

MECHELEN

WETTEREN

OOSTERLO

WERCHTER

ANTWERPEN

VILVOORDE

ZANDVLIET

DENDERMONDE

GROBBENDONK

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GENT

BOOM

LIERTEMSE

ZEMST

DUFFELITEGEM

SCHELLE

LOKEREN

VIERSEL

MECHELEN

WETTEREN

OOSTERLO

WERCHTER

ANTWERPEN

VILVOORDE

ZANDVLIET

DENDERMONDE

GROBBENDONK

The SIGMAPLAN 1977

a) verhogen en verzwaren waterkeringenb) Construction of inundation areasc) bouw stormvloedkering te Oosterweel

KBR

Page 6: Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary

The SIGMAPLAN 1977

Zeeschelde

Durme

Tielrodebroek

Page 7: Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary

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GENT

BOOM

LIERTEMSE

ZEMST

DUFFELITEGEM

SCHELLE

LOKEREN

VIERSEL

MECHELEN

WETTEREN

OOSTERLO

WERCHTER

ANTWERPEN

VILVOORDE

ZANDVLIET

DENDERMONDE

GROBBENDONK

The SIGMAPLAN 1977

a) verhogen en verzwaren waterkeringenb) aanleg gecontroleerde overstromingsgebiedenc) Construction of stormsurge barrier at Oosterweel

KBR

Page 8: Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary

90 m 90 m

54 m 54 m 54 m

hefdeuren

segmentkleppen

120 m

The SIGMAPLAN 19772003 : 1.000.000.000 EUR

123 m

Page 9: Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary

Hoe het SIGMAPLAN actualiseren ?

Nete’s

Dijle

Zenne

RupelDurme

Zeeschelde

Page 10: Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary

effect GOG op HW

5

6

7

8

9

10

11

0 50 100 150

afstand in km

as is

to be

GentVlissingen Hansweert Antwerpen Dendermonde

Page 11: Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary

Ecology: CRT

- Introducing estuarine ecosystem

- Tidal regime in area

- Two times a day!

Ring Dike Lowered FCA dike

FCA estuary

Outlet

polder

Concept FCA – CRT safety, ecology and a new ecosystem

Safety: FCA

- Lowered dike stretch

- Critical tides: whole storage capacity

- Only few times/year!

Ring Dike Lowered FCA dike

CRT estuary

Outlet

Inlet

polder

Page 12: Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary

Pilot project Lippenbroek

10 ha of tidal nature developping: May 2008

Page 13: Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary

0

1

2

3

4

5

6

7

7/04 12/04 17/04 22/04 27/04 2/05 7/05

date

level (m TAW)

Schelde (De Plaat)

Lippenbroek

0

1

2

3

4

5

6

7

7/04 12/04 17/04 22/04 27/04 2/05 7/05

date

level (m TAW)

Lippenbroek

Schelde (De Plaat)

0

1

2

3

4

5

6

7

7/04 12/04 17/04 22/04 27/04 2/05 7/05

date

level (m TAW)

Lippenbroek

Schelde (De Plaat)

Introducing macrotidal regime

Reduction of high water level by 3 meter No reduction of spring – neap variation

Page 14: Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary

Lippenbroek 16-05-06

0

25

50

75

100

125

150

175

5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

time (hour)

INFLOW OUTFLOW

Water quality: oxygen

Page 15: Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary
Page 16: Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary

“reverse tidal pumping”

0,5

0,6

0,7

0,8

0,9

1

1,1

1,2

1,3

1,4

1,5

0 2 4 6 8 10 12 14

Time (hrs)

Water level (m TAW)

spring neap mean

Page 17: Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary

Alternative disposal strategyAlternative disposal strategy