Lyngby-Taarbæk Forsning Dato: 14

Lyngby-Taarbæk Forsning Dato: 14

Lyngby -Taarbæk Forsning StrategiplanStrategiplan fforor AAfløbssystemetfløbssystemet 22012012 BILAGSRAPPORTBILAGSRAPPORT ForeløbigForeløbig uudgavedgave aaf:f: 77.. nnovemberovember 20122012 Udarbejdet af: Orbicon & Krüger Kontrolleret af : Version : 07 Date : Foreløbig udgave 7. november 2012 Ordrenr. : 363-120004 / xxxxxxx Lyngby-Taarbæk Forsning Dato: 14. december 2012 BILAGSRAPPORT Side: 1 Indhold 0 Indledning ........................................................................................................................................ 3 1 Modeller ........................................................................................................................................... 4 1.1 Beregningsprogrammet ................................................................................................................... 4 1.2 Oplandsmodellen ............................................................................................................................. 5 1.2.1 Generelt for oplandsmodellen ......................................................................................................... 5 1.2.2 Hydrologisk model ........................................................................................................................... 5 1.2.3 Hydraulisk model ............................................................................................................................. 6 1.2.4 Sikkerhedsfaktorer ........................................................................................................................... 7 1.3 Modelopbygning - oplandsmodellen ............................................................................................... 7 1.3.1 Hovedsystemsmodellen ................................................................................................................... 8 1.3.2 Modelområder ................................................................................................................................. 9 1.4 Beskrivelse af de 17 modelområder ................................................................................................ 9 1.4.1 Hollandsrenden (Orbicon) ................................................................................................................ 9 1.4.2 Buddingevej (Orbicon) ................................................................................................................... 11 1.4.3 Birkholmsvejkvarteret (Orbicon).................................................................................................... 14 1.4.4 Fortunoplandet (Orbicon) .............................................................................................................. 17 1.4.5 Lyngby Midt (Orbicon) ................................................................................................................... 20 1.4.6 Sorgenfrigård/Bondebyen (Orbicon) ............................................................................................. 22 1.4.7 Borrebakken (Orbicon) ................................................................................................................... 25 1.4.8 Taarbæk (Krüger) ........................................................................................................................... 28 1.4.9 Hummeltoften (Krüger).................................................................................................................. 32 1.4.10 Sorgenfri (Krüger) ........................................................................................................................... 34 1.4.11 Bagsværdrenden (Krüger) .............................................................................................................. 37 1.4.12 Hjortekær (Krüger) ......................................................................................................................... 40 1.4.13 Furesøkvarteret (Krüger)................................................................................................................ 43 1.4.14 Virum (Krüger) ................................................................................................................................ 47 1.4.15 Lundtofte (Krüger).......................................................................................................................... 49 1.4.16 Ørholm (Krüger) ............................................................................................................................. 52 1.4.17 Lindevangen (Krüger) ..................................................................................................................... 55 1.5 Anvendelse af modellerne ............................................................................................................. 59 1.5.1 Recipientberegninger ..................................................................................................................... 59 1.5.2 Stuvningsberegninger .................................................................................................................... 59 2 Recipienter ..................................................................................................................................... 61 2.1 Målsætning .................................................................................................................................... 61 2.1.1 Krav benyttet i tidligere rapport .................................................................................................... 61 2.1.2 Målsætning anvendt ...................................................................................................................... 61 2.2 Resultater ....................................................................................................................................... 62 3 Afløbssystemet ............................................................................................................................... 63 3.1 Målsætning .................................................................................................................................... 63 3.1.1 Opstilling af funktionskrav ............................................................................................................. 63 Lyngby-Taarbæk Forsning Dato: 14. december 2012 BILAGSRAPPORT Side: 2 3.2 Beregningstilfælde ......................................................................................................................... 64 3.2.1 Opstuvning til terræn, status ......................................................................................................... 64 3.2.2 Opstuvning til terræn, plan ............................................................................................................ 65 4 Afløbssystemets tilstand ................................................................................................................ 66 4.1 Renovering ..................................................................................................................................... 66 5 Oversvømmelser ............................................................................................................................ 67 5.1 Screening ........................................................................................................................................ 67 5.2 Resultat .......................................................................................................................................... 68 6 Prioritering af delområder ............................................................................................................. 69 6.3 Prioriteringsmatrix ......................................................................................................................... 69 6.3.1 Data medtaget i prioriteringsmatricen. ......................................................................................... 69 6.3.2 Databearbejdning. ......................................................................................................................... 70 6.3.3 Enhedstal. ....................................................................................................................................... 72 6.3.4 Endelig prioritering. ....................................................................................................................... 72 7 Beregning af investeringsbehov - metode ..................................................................................... 73 Lyngby-Taarbæk Forsning Dato: 14. december 2012 BILAGSRAPPORT Side: 3 0 Indledning Nærværende bilagsrapport indeholder langt hen ad vejen de afsnit, som i den tidligere Stra- tegiplan fra 2009 var placeret i ”Rapport del A, Data”. Afsnit 1 vedrørende modeller og beskrivelse af modeloplande er således teksten fra 2009 opdateret med ændringer, som følge af nært forestående og allerede udførte anlægs- arbejder i de enkelte modeloplande. Afsnit 2 vedrørende recipienter er revideret som følge af de ændrede krav til recipient- beskyttelse, som den vedtagne ”Vandplan for Vandområde Øresund” foreskriver. Afsnit 6 vedrørende prioritering af delområder for udbygning af ledningsnettet samt afsnit 7 med beskrivelse af beregningsmetode for fastlæggelse af investeringsbehov for udbyg- ning af ledningsnettet er let revideret i forhold til afsnit 9 fra Strategiplan 2009 ”Rapport del B, Strategi”. Lyngby-Taarbæk Forsning Dato: 14. december 2012 BILAGSRAPPORT Side: 4 1 Modeller Modellerne er det beregningsværktøj, der i projektet

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