Projektforslag - Naturstyrelsen

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Faunapassage ved Stampemøllen i Ribe Side 2 Projektforslag Marts 2011 INDHOLDSFORTEGNELSE 1. BAGGRUND OG FORMÅL.............................................................................................4 1.1 GENERELT ...................................................................................................................4 1.2 OPRINDELIGT DISPOSITIONSFORSLAG ..........................................................................5 1.3 DESIGN AF STRYG........................................................................................................6 2. EKSISTERENDE FORHOLD..........................................................................................7 2.1 PROJEKTOMRÅDET.......................................................................................................7 2.2 EJERFORHOLD..............................................................................................................8 2.3 PLANBINDINGER ..........................................................................................................8 2.4 REGULATIVMÆSSIGE FORHOLD .................................................................................10 2.5 AFSTRØMNING OG VANDSTANDE...............................................................................15 2.5.1 Afstrømning..........................................................................................................15 2.5.2 Vandstandsforhold ...............................................................................................19 2.6 BIOLOGISKE FORHOLD...............................................................................................22 2.7 GEOTEKNISKE FORHOLD............................................................................................23 2.8 TEKNISKE ANLÆG, LEDNINGER OG DRÆN ..................................................................23 2.8.1 Ledningsanlæg .....................................................................................................24 2.8.2 Broer ....................................................................................................................25 2.8.3 Parallelle vejanlæg (Damvej) ..............................................................................27 2.8.4 Stampemøllen.......................................................................................................28 2.8.5 Spildevandspumpestation nedstrøms Stampemøllen ............................................29 2.8.6 Betonindfatninger opstrøms Stampemøllen..........................................................30 2.8.7 Private anlæg nær eller i det regulativmæssige vandløbsprofil...........................31 2.9 KULTURHISTORISKE FORHOLD ..................................................................................33 3. PROJEKTFORSLAG......................................................................................................35 3.1 DESIGNKRITERIER .....................................................................................................35 3.2 OPTIMAL FAUNAPASSAGE..........................................................................................36 3.3 FYSISKE BINDINGER FOR FAUNAPASSAGE I RIBE .......................................................38 3.4 DESIGN AF FAUNAPASSAGE .......................................................................................44 3.4.1 Den øvre del (station 850 – 963)..........................................................................44 3.4.2 Spuns/nordlige løb ...............................................................................................45 3.4.3 Sydligt løb ............................................................................................................46 3.4.4 Nedre del (st. 963 til 1225) ..................................................................................47 3.5 MATERIALEVALG OG UDFØRELSE..............................................................................47 3.6 AFVÆRGEFORANSTALTNINGER OG HENSYN TIL NÆRLIGGENDE ANLÆG ....................48 3.7 DRIFT OG VEDLIGEHOLD............................................................................................49 3.8 INDRETNING AF ARBEJDSPLADS OG FORHOLD UNDER ETABLERINGEN .......................50 4. KONSEKVENSVURDERINGER ..................................................................................52 4.1 TEKNISKE ANLÆG......................................................................................................52 4.2 HYDRAULISK KARAKTERISTIK...................................................................................52 4.2.1 Vandføring ...........................................................................................................52 4.2.2 Vandstand og vandhastighed ...............................................................................53 4.2.3 Bundbredde ..........................................................................................................60 C:\documents and settings\hjm\desktop\Projektforslag_4.doc
Faunapassage ved Stampemøllen i Ribe Side 3 Projektforslag Marts 2011 4.3 OVERSVØMMELSESRISIKO OG GRUNDVANDSFORHOLD..............................................60 4.3.1 Opstrøms Stampemølle.........................................................................................60 4.3.2 Nedstrøms Stampemølle.......................................................................................60 4.4 FLODEMÅL.................................................................................................................63 4.5 FAUNAPASSAGEFORHOLD, GYDEOMRÅDER, HØLLER ETC. .........................................63 4.6 GEOTEKNISKE FORHOLD............................................................................................68 4.7 NORD FOR SPUNS - FISK, GRØDE OG SEDIMENTATION................................................68 4.8 MULIGHED FOR FREMTIDIG ÆNDRING AF FLODEMÅLSBESTEMMELSER......................68 4.9 PÅVIRKNING AF RIBE ØSTERÅ...................................................................................71 4.10 KONSEKVENSER FOR LAMPRETTER............................................................................71 5. ØKONOMI OG TIDSPLAN ...........................................................................................72 6. REFERENCER ................................................................................................................73 Bilag Bilag 1 Placering stryg og spuns Bilag 2 Højdekurvekort Bilag 3 Geotekniske boreprofiler C:\documents and settings\hjm\desktop\Projektforslag_4.doc
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