120510 iasi morava - Mr Albert Schwingshandl

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introduction planning process monitoring oberhofer oberhofer riocom riocom pilot project restoration measures at the restoration measures at the lowland river Morava lowland river Morava intro intro

description

Restoration measures on the river Morava

Transcript of 120510 iasi morava - Mr Albert Schwingshandl

Page 1: 120510 iasi   morava - Mr Albert Schwingshandl

introduction planning process monitoring

oberhoferoberhofer riocomriocom

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restoration measures at the restoration measures at the lowland river Moravalowland river Morava

introintro

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restoration measures at the restoration measures at the lowland river Moravalowland river Morava

pilot project pilot project ““MUF km 15 MUF km 15 ––2525”” river bank river bank and river profile improvements and and river profile improvements and restoration as well as measures for restoration as well as measures for meander reconnection for the Morava meander reconnection for the Morava River km 15River km 15--25 (25 (MarcheggMarchegg).).

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1.step 1.step -- general scheme with general scheme with following goals:following goals:development of various types of development of various types of measures, related to different measures, related to different objectives in the context of river objectives in the context of river ecologyecology2 2 –– phase planphase planphase A phase A –– short term goalsshort term goalsphase B phase B –– long term long term ““idealideal”” objectivesobjectives

2. step 2. step –– application of types of application of types of measures for the river section km measures for the river section km 15 15 -- 2525

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1st phase

2 phase plan2 phase plan

2nd phase

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typology of measurestypology of measures

A. A. improvement of river improvement of river coursecourse developmentdevelopment

B. B. variability of cross section variability of cross section morphologymorphology

C. C. lateral connectivitylateral connectivityD. D. meander reconnectionmeander reconnectionE. E. improvements of low water improvements of low water

structures in river structures in river coursecourseF. new types of river bank F. new types of river bank

stabilizationstabilizationG. design of river banks in urban G. design of river banks in urban

areasareas

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steepsteep bankbank, , currentcurrent situationsituation,,lowlow waterwater 20042004

duringduring constructionconstruction, 2002, 2002

A A improvement of river course development improvement of river course development set back training structureset back training structure

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Profile (Profile (rkmrkm 24.41): steep bank, survey24.41): steep bank, survey

set back training structure set back training structure

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steep bank: low water 2004steep bank: low water 2004--0707 steep bank: low water 2004steep bank: low water 2004--0707

set back training structureset back training structure

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steep bank: low water 2004steep bank: low water 2004--0707 steep bank: low water 2004steep bank: low water 2004--0707

set back training structureset back training structure

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set back training structureset back training structure

right: digital right: digital elevationelevation modelmodel, , meanmean waterwater and and lowlow waterwater 20042004

left: change detectionleft: change detectionerosion (yellow), erosion (yellow), accumulation (red)accumulation (red)

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20052005--03 03 floodflood (HQ 20?)(HQ 20?)

C lateral C lateral connectivityconnectivity secondarysecondary riverriver channelchannel

20032003--01 01 > > meanmean waterwater

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secondarysecondary riverriver channelchannel

> mean water 2004> mean water 2004--0202 > mean water 2003> mean water 2003--0101

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lowlow waterwater 20042004--0707

low water 2004low water 2004--0303

F new types of river bank stabilizationF new types of river bank stabilization short groyneshort groyne

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shortshort groynegroyne

lowlow waterwater 20042004 lowlow waterwater 20032003

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shortshort groynegroyne

right: digital right: digital elevationelevation modelmodel, , lowlow waterwater and and meanmean waterwater 20042004

left: change left: change detectiondetectionerosion (yellow), erosion (yellow), accumulation (red)accumulation (red)

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meander VI,meander VI,during construction, during construction, low water 2002low water 2002

D meander reconnectionD meander reconnection meander VI, outflow reconnectionmeander VI, outflow reconnection

meander VI,meander VI,mean water 2003mean water 2003

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meanmean waterwater 20022002--1212 meanmean waterwater 20032003--0303

meander VI, outflow reconnectionmeander VI, outflow reconnection

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meander VI, outflow reconnectionmeander VI, outflow reconnection

digital digital elevationelevation modelmodel, , lowlow waterwater, 2003, 2003

change detection, erosion (yellow), change detection, erosion (yellow), accumulation (red)accumulation (red)

digital digital elevationelevation modelmodel, , lowlow waterwater, 2004, 2004

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digital elevation model digital elevation model –– 2004, low water 2004, low water meander VI, outflow reconnectionmeander VI, outflow reconnection

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during construction 2002, Austrian sideduring construction 2002, Austrian side during construction 2003, Slovakian sideduring construction 2003, Slovakian side

D meander reconnectionD meander reconnection triangular guiding structure triangular guiding structure

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after construction 2003, Austrian sideafter construction 2003, Austrian side after construction 2003, Austrian sideafter construction 2003, Austrian side

triangular guiding structuretriangular guiding structure

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overview of overview of sediment bench sediment bench and the meander and the meander outflow (M IV) on outflow (M IV) on the Austrian side the Austrian side and the triangular and the triangular guiding structure guiding structure on the Slovakian on the Slovakian side, side, digital elevation digital elevation model, mean water model, mean water and low waterand low water

B B variability of cross section morphologyvariability of cross section morphology sediment benches sediment benches

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Sediment benches made from meanderSediment benches made from meander--outflow material, low water (2002)outflow material, low water (2002)

sediment benchessediment benches

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