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DSD-NL 2019 D-HYDRO Cases - Stresstest light versus stresstest met rioolmodel - van Hoof

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Presentatie door Peter van Hoof, Waterfeit Adviseurs bv, op het D-HYDRO Symposium 2019, tijdens de Deltares Software Dagen - Editie 2019. Woensdag, 19 juni 2019, Delft.

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DSD-NL 2019 D-HYDRO Cases - Stresstest light versus stresstest met rioolmodel - van Hoof

  1. 1. D-HYDRO Cases stresstest light versus stresstest met rioolmodel
  2. 2. Werkwijze • 3 sporen • SOBEK-Urban • Rioolmodel • Q-GIS • Maaiveldmodel AHN3 • Ruwheidsraster BGT • Infiltratie raster • D-HYDRO: • Maaiveldmodel • Ruwheidsraster • SOBEK resultaten als belasting 19-6-2019 D-HYDRO - Casestudy 2
  3. 3. Opties • Grid verfijning 19-6-2019 D-HYDRO - Casestudy 3
  4. 4. SOBEK-resultaten in D-HYDRO 19-6-2019 D-HYDRO - Casestudy 4
  5. 5. Water op straat met overlast 19-6-2019 D-HYDRO - Casestudy 5
  6. 6. Water op straat zonder overlast 19-6-2019 D-HYDRO - Casestudy 6
  7. 7. Stresstest light vs. stresstest met riool • Stresstest light uitgevoerd door Arcadis • Maatregelen bepaald op basis van stresstest en expert judgement • 6 risicolocaties nu onderzocht in stresstest met rioolmodel • Geactualiseerd rioolmodel in SOBEK • Doelmatigheid maatregelen bepalen 19-6-2019 D-HYDRO - Casestudy 7
  8. 8. Stresstest light • 60 mm neerslag • 20 mm riool • 40 mm oppervlakkig • Geen rioolmodel • Maatregelen uit het riool niet meegenomen 19-6-2019 D-HYDRO - Casestudy 8
  9. 9. Stresstest D-HYDRO met SOBEK-resultaten • 70 mm neerslag op het rioolstelsel • i.v.m. vergelijkbaarheid zonder piek • Rioolmodel SOBEK • Koppeling met maaiveld model D-HYDRO 19-6-2019 D-HYDRO - Casestudy 9
  10. 10. Stresstest light versus stresstest met riool Stresstest light Bij T=100 water op straat Stresstest met rioolmodel Pas bij T=250 water op straat 19-6-2019 D-HYDRO - Casestudy 10
  11. 11. Overeenkomsten in resultaat 19-6-2019 D-HYDRO - Casestudy 11
  12. 12. Maatregelen: Toevoegen HWA-riool en waterplein 19-6-2019 D-HYDRO - Casestudy 12
  13. 13. Verlagen maaiveld in openbare ruimte 19-6-2019 D-HYDRO - Casestudy 13
  14. 14. Maatregelen: Toevoegen HWA-riool en waterplein 19-6-2019 D-HYDRO - Casestudy 14
  15. 15. Ervaringen tot nu toe • Beperkte lediging van het maaiveld zorgt voor overschatting van wateroverlast • Belangrijkste oorzaak ontbreken van kolken in rioolmodel • Water op straat uit putten in model, in de praktijk komt water via kolk, of huisaansluiting inpandig • Gedetailleerd model geeft lange rekentijden/grote bestanden en beperkt projectgrootte • Grid-verfijning zorgt voor kleinere bestanden, parallel rekenen zorgt voor versnelling 19-6-2019 D-HYDRO - Casestudy 15

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