Sediment management plans for the Dutch Rhine branches · 5 Management of fairway profiles 8...

8 oktober 2009

Sediment management plans for the Dutch Rhine branches

Arjan SiebenRijkswaterstaat Waterdienst

zurück zum Inhaltsverzeichnis zur Kurzfassung

Management of fairway profiles2 8 oktober 2009Rijkswaterstaat

What happens downstream Lobith? Plans and trends

Daily practice of fairway management

Projects, and how they interfere with fairway management

Cooperation and exchange

no regret and economicpredictability of navigabilitylyfe-cycle approachsustainability(users do, we should)


1980 1985 1990 1995 2000 2005 2010 2015 2020 2025

assigned dredging (OLR-2,5m)

sand miningcontract

dredging

(OLR-2,5m)

contract dredging

(OLR-2,8m; 150 m)contract dredg.

OLR-2,8m;170m

?

construction

fixed layer

outer bank

nourishment

Bovenrijn

WFD

bank

projects

Delta Program

Nijmegen

What happens downstream Lobith? projects

dredging&dumping

Room for the River

groyne lowering

Waal, Pan.Kan.

Erlecom

St.Andries

Fixed layer

Bovenrijn


1830 1888 1872 1890

What happens downstream Lobith? trends


1830 1888 1872 1890

-1.4

-1.2

-1

-0.8

-0.6

-0.4

-0.2

0

0.2

1950 1960 1970 1980 1990 2000 2010

aver

age

bed

leve

l [m

] rel

ativ

e to

195

0

BovenrijnBovenWaalMiddenWaalBenedenWaal

-5.0

-2.5

0.0

2.5

5.0

855865875885895905915925935945955

rivierkilometer

bed

leve

l [m

]+NA

P

1950-1960 1960-1970

1970-1980 1980-1990

1990-2000 2000-2007



1830 1888 1872 1890

-1.4

-1.2

-1

-0.8

-0.6

-0.4

-0.2

0

0.2

1950 1960 1970 1980 1990 2000 2010

aver

age

bed

leve

l [m

] rel

ativ

e to

195

0


-5.0

-2.5

0.0

2.5

5.0

855865875885895905915925935945955

rivierkilometer

bed

leve

l [m

]+NA

P

1950-1960 1960-1970

1970-1980 1980-1990

1990-2000 2000-2007


-2,5

-2,0

-1,5

-1,0

-0,5

0,0

0,5

800820840860880900920

Rivierkilometer

bode

mve

rand

erin

g [m

] tov

193

4

gemeten in 1960

gemeten in 1985

gemeten in 2000

prognose voor 2030

prognose voor 2060

prognose voor 2090

NiederrheinWaal Bovenrijn

Lobi

th

Pan

. Kop

Nijm

egen

Em

mer

ich

Erle

com

St.

And

ries


1830 1888 1872 1890

-1.4

-1.2

-1

-0.8

-0.6

-0.4

-0.2

0

0.2

1950 1960 1970 1980 1990 2000 2010

aver

age

bed

leve

l [m

] rel

ativ

e to

195

0


-5.0

-2.5

0.0

2.5

5.0

855865875885895905915925935945955

rivierkilometer

bed

leve

l [m

]+NA

P

1950-1960 1960-1970

1970-1980 1980-1990

1990-2000 2000-2007


-2,5

-2,0

-1,5

-1,0

-0,5

0,0

0,5

800820840860880900920

Rivierkilometer

bode

mve

rand

erin

g [m

] tov

193

4

gemeten in 1960

gemeten in 1985

gemeten in 2000

prognose voor 2030

prognose voor 2060

prognose voor 2090

NiederrheinWaal Bovenrijn

Lobi

th

Pan

. Kop

Nijm

egen

Em

mer

ich

Erle

com

St.

And

ries -0.04

-0.03

-0.02

-0.01

0

0.01

0.02

0.03

1990 2000 2010 2020 2030 2040

pote

ntia

l bed

leve

l cha

nges

[m/a

] at k

m 8

65

base

d on

ups

trea

m o

bser

vatio

ns

record of 1975-1985 (without feeding)

record of 1985-1995 (with feeding)

record of 1995-2004 (with feeding)


shallow inner bend

bed forms over a point bar

Sediment Management & Fairway Maintenance

32%

31%

assigned dredgig

plough (Pflug)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

855865875885895905915925935945955

kilometer

dune

hei

ght [

m]

1999 2000 2001 2002 2003 2004 2005 2006


shallow inner bend


0.0

0.5

1.0

1.5

2.0

2.5

3.0

855865875885895905915925935945955

kilometer

dune

hei

ght [

m]

1999 2000 2001 2002 2003 2004 2005 2006


32%

31%

plough (Pflug)


shallow inner bend


0.0

0.5

1.0

1.5

2.0

2.5

3.0

855865875885895905915925935945955

kilometer

dune

hei

ght [

m]

1999 2000 2001 2002 2003 2004 2005 2006


32%

31%

0

100

200

300

400

500

600

500 1000 1500 2000 2500 3000 3500 4000

Rhine discharge [m3/s]

min

imum

dep

th [c

m] o

bser

ved

OLR-2,5 m (1991-2006)OLR-2,8m (2007-2008)

contract dredging

(OLR-2,5m)

plough (Pflug)


shallow inner bend


0.0

0.5

1.0

1.5

2.0

2.5

3.0

855865875885895905915925935945955

kilometer

dune

hei

ght [

m]

1999 2000 2001 2002 2003 2004 2005 2006


32%

31%

0

100

200

300

400

500

600

500 1000 1500 2000 2500 3000 3500 4000

Rhine discharge [m3/s]

min

imum

dep

th [c

m] o

bser

ved

OLR-2,5 m (1991-2006)OLR-2,8m (2007-2008)

0

200000

400000

600000

800000

1000000

1200000

1998 2000 2002 2004 2006 2008 2010

jaar

lijks

beu

nvol

ume

[m3]

Bovenrijn km 856-867BovenWaal km 867-885MiddenWaal km 886-915BenedenWaal km 915-955totaal

assigned dredging contract dredging

(OLR-2,5m)

contract dredging

(OLR-2,8m)

plough (Pflug)


Impact of projects on fairway maintenance(40 years bed level changes, dredge&dump strategies)

Ruimte voor de Rivier project

Delft3D model available and applied

Delft3D model available end of 2009

40 years simulation, 80 km length; four days modelling&computing


Impact of projects on fairway maintenance(40 years bed level changes, dredge&dump strategies)

Ruimte voor de Rivier project

Delft3D model available and applied

Delft3D model available end of 2009

40 years simulation, 80 km length; four days modelling&computing


Flood plain lowering near nautical bottle neck

• Dredging of bottle neck = no regret (wait and see…)• If dumping is optimized, downstream shallows can reduce as well

Present situation Shallow fairway Planned excavation Predicted sedimentation

at least 2,8 m depth & 4 m width-averaged (95% of the year)with 5 days of dredging per 15 km at maximum


Lowering of groynes over 85 km

• Crest from OLR+3,0 m to OLR+1,2 m• Sedimentation and maintenance in the fairway? (2D model)

Expert judgement• Do banks erode ?• Do bed levels in groyne fields change?









0,2 -0,3 m sedimentation (redistribution)raise of OLR (less maintenance)potential & temporal supply from groyne fields


learning by doing, 10 km pilot

August 2009

Monitoring (> 1 year) of10 km-scale

bed levels (multibeam echosounding)maintenance (contractor)bank (laser-altimetry by plane)recovery of vegetation

4 selected groyneswater levels (waves and hydrograph)velocities (high and low flow)


Removal bank protection ship wavesPartial closure of groyne fields siltation

Water Framework Directive (2015 – 2027)Low-velocity zones of water,

Sheltered from ship waves

Sand bed, sand banks

For spawning, resting and young fish

Lowering of bank zones

1980 1985 1990 1995 2000 2005 2010 2015 2020 2025

assigned dredging (OLR-2,5m)

sand miningcontract

dredging

(OLR-2,5m)

contract dredging

(OLR-2,8m; 150 m)

construction

fixed layer

outer bank

nourishment

Bovenrijn

WFD

bank

projects

Delta Program

Nijmegen

pp p j

dredging&dumping

Room for the River

groyne lowering

Waal, Pan.Kan.

Erlecom St.Andries

Fixed layer

Bovenrijn

http://www.reinwater.nl/nieuws_vervolg.php?id=61


170 m maximum260 m

30 m

80 m

Combination of nature, flood capacity and fairway maintenance

on average larger depth, some sedimentation nearentrance (optimization design & after construction..)

Costs….

Alternative for Room for the River & Water Framework Directive (decision 2011)


170 m maximum260 m

30 m

80 m

Combination of nature, flood capacity and fairway maintenance


Costs….



170 m maximum260 m

30 m

80 m

Dynamic banks, sheltered zone and parallel dam to compensate for effect on fairway


Costs….



Niederrhein (Emmerich), river axis km 854

-6

-3

0

3

6

9

850860870880890900910920930940950

[m]+

NA

P

GLW & OLR 2002bed level (2002)

Die Qual den Waal


Niederrhein (Spyck), river axis km 857Niederrhein (Emmerich), river axis km 854

-6

-3

0

3

6

9

850860870880890900910920930940950

[m]+

NA

P


-6

-3

0

3

6

9

850860870880890900910920930940950[m

]+N

AP

GLW & OLR 2002

bed level (2002)Die Qual den Waal


Niederrhein (Spyck), river axis km 857Bovenrijn (Tolkamer) river axis km 862


-6

-3

0

3

6

9

850860870880890900910920930940950

[m]+

NA

P


-6

-3

0

3

6

9

850860870880890900910920930940950[m

]+N

AP

GLW & OLR 2002

bed level (2002)

-6

-3

0

3

6

9

850860870880890900910920930940950[m

]+N

AP


Die Qual den Waal



Waal (Nijmegen), river axis km 880


-6

-3

0

3

6

9

850860870880890900910920930940950

[m]+

NA

P


-6

-3

0

3

6

9

850860870880890900910920930940950[m

]+N

AP

GLW & OLR 2002

bed level (2002)

-6

-3

0

3

6

9

850860870880890900910920930940950[m

]+N

AP


-6

-3

0

3

6

9

850860870880890900910920930940950[m

]+N

AP

GLW & OLR 2002

bed level (2002)Die Qual den Waal



Waal (Nijmegen), river axis km 880Waal (Zaltbommel) river axis km 929


-6

-3

0

3

6

9

850860870880890900910920930940950

[m]+

NA

P


-6

-3

0

3

6

9

850860870880890900910920930940950[m

]+N

AP

GLW & OLR 2002

bed level (2002)

-6

-3

0

3

6

9

850860870880890900910920930940950[m

]+N

AP


-6

-3

0

3

6

9

850860870880890900910920930940950[m

]+N

AP

GLW & OLR 2002

bed level (2002)

-6

-3

0

3

6

9

850860870880890900910920930940950[m

]+N

AP


Die Qual den Waal


pilot feeding Bovenrijn (2009)

monitoring

water and bed levelsvelocities13.500 m3 granite tracer (Medusa)bed samplingbackscattermethod (TU Delft)

sediment feeding

fixed layer

• appr. 60.000 m3 every 2nd year• 0,3 m x 150 m between km 861-864 • outer bend, left of axis• lower than OLR-3,5 m• composition conform bed (&sand)

Fairway maintenance and bifurcation Pannerdensche Kop ???



monitoring


sediment feeding

fixed layer





monitoring


sediment feeding

fixed layer





monitoring


sediment feeding

fixed layer




• nourishment Bovenrijn (Rijkswaterstaat & WSD; Deltares-BAW-BfG)

• Realisation• Modelling• Monitoring• Evaluation

• Revitalising banks and groyne fieldsat locations with heavy traffic

• Expertise on parallel dams

• Flood plain dynamics

Cooperation and exchange is needed

• Efficiency in fairway maintenance

• More (fine) sediment from the Niederrhein..


Thank you for your attention !

Arjan Sieben ([email protected])

zurück zum Inhaltsverzeichnis zur Kurzfassung

Date post:	17-Jun-2020
Category:	Documents
Upload:	others
View:	1 times
Download:	0 times

Sediment management plans for the Dutch Rhine branches · 5 Management of fairway profiles 8...

Documents