Fish passage II - Razvan Voicu,Eric Kay

8/10/2019 Fish passage II - Razvan Voicu,Eric Kay

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911,2014

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The paper presents a case studythat proposes practical solutions

for the restoration of longitudinal

connectivity of Criul Repede

River

In the town of Oradea there are a lot transversal constructionssuch as discharge sills and small dams, that stops migration

process of various fish species.


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DOWNSTREAM

metal semi-cylinder

discharge sill

metal hinge

resistant rubber canal watercourserubber fixing system for the canal

Figure 1 Positioning the metal semi-cylinder indicative scheme


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left bank right bank

resistant rubber canal discharge sill

module M2

module M1

watercourse

bascule for redirecting

fish towards the rubber canal

metal grillleft bank metal grid fence

fish redirecting system(electromagnetic field)

rubber canal

discharge sill

Figure 2 Rubber canal positioning indicative scheme


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electric motoror winch

metal barmetal oval

metal cablemetal oval

mobile bascule or mobile semi-cylinder

mobile semi-cylinderframework

metal sheet pile - grid

left bank

water level in the rubber canal

Figure 4 Positioning the electric motor indicative scheme


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The solution, intended for one river bank only, has the advantage ofbeing used as fish passage system upstream of discharge sill, too.

Another advantage of this system is that they can be dismantled and

stored (during winter) and used in other areas where rivers are

crossed by hydrotechnical works with transversal bars.

The costs for these systems are considered reasonable in contrast

with conventional systems costs.

They can work automatically, as the human intervention is required

only when it comes about supervision.

Andy Loghin


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!

Rzvan G.VOICU, [email protected]@gmail.com

National Institute of Hydrology and Water Management

Laboratory of Eco-Hydrology, Romnia

Eric L.KAY, Senior project [email protected]

KAY ASSOCIATES, Comox, BC. CanadaForest and Industrial Road & Water Management Consultants


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Vassalboro, Maine (Kennebec County)http://flyfishingonly.net/forum/topic.asp?TOPIC_ID=5967


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l = 4mdischarge sill concrete bed

concrete ramp

H= 2,5 m(thickness)

indicative scheme

h = 3, 8m

L= 5, 52 mCriul Repede River

h1= 1,4 m

Concrete ramp dimensions


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right bank the metal grid 2 left bankmetal stopper

discharge sill

metal and concrete fences

indicative scheme

concrete ramp

crenelated metal rail

metal bars

Metal grids positioning


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discharge sill electric motor

concrete ramp metal frame

metal frame electric motor


concrete bed crenelated pinion

indicative scheme

Criul Repede River

rubber wheel

Crenelated rail positioning inside the concrete ramp


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telescopic hydraulic cylinder


concrete bed crenelated pinion

indicative scheme

metal hinge

metal frame

electric motor

metal mobile grid 1 (maximum height)

bearingbearing

Telescopic hydraulic cylinder positioning on the metal frame and on the

metal mobile grid1

vitess-industrial.ro


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mobile metal grid 1metal bar for opening the grid 2

the metal grid 2

metal and concrete fences

concrete platform

indicative scheme

rubber roller

rubber wheel

2 cm

electric motor

Metal frame fastening system


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rolling metal bar rubber wheel

metal bar securing the metal frame

rubber wheel

indicative scheme

http://en.wikipedia.org/wiki/Train_(roller_coaster)

Rollers positioning


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mobile metal grid 2 metal springconcrete platform


30dd

metal bar mobile metal grid 1discharge sill metal frame

concrete ramp electric motor

metal spring

indicative scheme

Criul Repede River

30 cm

Minimum and maximum levels of metal mobile grids 1 and 2


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mobile metal grid 2 - metal spring

rsc.org

mobile metal grid 1telescopic hydraulic cylinder

30dd

mobile metal grid 1discharge sill electric motor

concrete ramp metal frame

indicative scheme

Criul Repede River 30 cm

bearing

Metal grid refolding and system returning on horizontal surface

Rack railway

http://www.connectmums.com/wp-

content/uploads/2012/03/Mt-Pilatus-

Rack-Railway-3-540300.jpg


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mobile metal grid 1metal fence concrete fence

mobile metal grid 2

metal spring

metal bar for opening the grid 2 discharge sill

concrete platform

indicative scheme

Concrete platform positioning


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Rzvan G.VOICU, [email protected]@gmail.com

Documents

Fish passage II - Razvan Voicu,Eric Kay