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DSD-INT 2019 iMOD Dublin - Baker


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Presentation by Gerry Baker, ARUP, at the iMOD - User Day, during Delft Software Days - Edition 2019. Tuesday, 12 November 2019, Delft.

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DSD-INT 2019 iMOD Dublin - Baker

  1. 1. iMOD Dublin Gerry Baker & Jenny Flink 1 iMOD User Day 2019 12th Nov 2019 Delft
  2. 2. Regions AMERICAS AUSTRALASIA EAST ASIA EUROPE UKIMEA Global Organisation We are planners, designers, engineers, consultants and technical specialists that deliver innovative projects across the world with creativity and passion 5 92 Offices 40 Countries 15,000 People
  3. 3. Our Firm Q UAL I T Y O F W O RK W E A R E N E V E R S AT I S F I E D W I T H S E C O N D B E S T TO TAL AR CHI T E CT U RE W E C O N S I D E R A L L R E L E VA N T FA C T O R S T O G E T H E R T O P R O D U C E H O L I S T I C S O L U T I O N S HUM ANE O RG ANI S AT I O N W E A R E A F I R M T H AT I S H U M A N A N D F R I E N D LY I N S P I T E O F B E I N G L A R G E A N D E F F I C I E N T S T R AI G HT AN D HO NO UR ABL E DE AL I NG S W E M A I N TA I N T H E H I G H E S T S TA N D A R D O F I N T E G R I T Y S O CI AL US E F UL NE S S W E D E L I V E R O U T C O M E S T H AT B E N E F I T S O C I E T Y RE AS O N ABL E P RO S P E RI T Y O F M E M BE RS W E S E E K T O E N S U R E T H AT O U R M E M B E R S A R E R E A S O N A B LY R E WA R D E D F O R T H E VA L U E T H E Y C R E AT E . W E B E L I E V E T H AT B Y P U R S U I N G T H E S E A I M S A N D A D D R E S S I N G T H E O P P O R T U N I T I E S B E F O R E U S , O U R C O L L A B O R AT I V E S P I R I T A N D I N D E P E N D E N T T H I N K I N G W I L L E N S U R E T H E C O N T I N U I N G S U C C E S S O F O U R F I R M . As a trust-owned firm with no individual shareholders or external investors, Arup sets its own direction – independently. This allows us to choose work that aligns with our values, working with clients on ambitious projects that will set new standards.
  4. 4. Europe Region16 O F F I CE S Staff1,650+ Istanbul Belgrade Cork Galway Krakow Limerick Madrid Warsaw Berlin Milan Frankfurt Dusseldorf Amsterdam Copenhagen Groningen Dublin
  5. 5. Irish Water Lead Mitigation Plan 5 L E A D I N D R I N K I N G WAT E R I S A R E C O G N I S E D H E A LT H C O N C E R N PA R T I C U L A R LY F O R U N B O R N C H I L D R E N . T H E R E A R E N O L E A D WAT E R M A I N S I N I R E L A N D , H O W E V E R T H E R E A R E S T I L L S O M E L E A D P I P E S R E M A I N I N G I N T H E P U B L I C N E T W O R K .
  6. 6. Orthophosphate Treatment 6 • Orthophosphate is added at the reservoir and forms a protective coating inside the water supply pipes • Water Supply Leakage in Dublin 40% • Orthophosphate is a major contributor to eutrophication in rivers and estuaries • The Environmental Quality Standard for Good Status Rivers is 0.035mg/l • The proposed dosing concentration is 1.5mg/l Tolka Estuary
  7. 7. Preliminary Risk Assessment Methodology 7 • A GIS/Excel based screening tool was developed based on WFD Characterisation Methodology and attenuation factors from Irish Research • Orthophosphate is readily sorbed to soil under favourable conditions • This screening tool indicated Dublin was an issue
  8. 8. Further Characterisation – 3D Model 8 Why iMOD • Potential to develop a large model dataset and determine discretisation at a later date • Powerful 3D visualisation • Act as a repository of information from multiple sources Why not iMOD • No water quality modelling • No mesh refinement • Batch Scripts: Hydrogeologists = Programmers • Difficult learning curve – that manual, limited community experience Why 3D Model? • GIS/Excel Model assumed all recharge within a sub-catchment discharges as baseflow to the river • Attenuation factors based on small scale agricultural catchments • Some Dublin rivers are culverted
  9. 9. Dublin Hydrology 9
  10. 10. Dublin Hydrogeology 10 • 3-4m of Made Ground • 5-30m of Glacial Deposits • Mainly Till / Diamicton • Glaciofluvial Sands & Gravel Channels • Muddy Limestone (non-karstified) “ Calp”
  11. 11. Conceptual Model Bedrock River • Water Supply Pipes • Typically 0.5m below ground • Leakage modelled as specified flux • Storm/Sewerage Pipes • Depth can vary • Modelled as drain • Drain Level based on pipe elevation • Conductance to be calibrated against measured dry weather infiltration
  12. 12. Water Pipeline Network
  13. 13. Current Model Extent – River Liffey Valley 10m DEM Coverage ©
  14. 14. Borehole Database for Dublin Geological Survey of Ireland provided their full database of geotechnical boreholes Varied quality of borehole logging Arup Digital Services Team developed VB script to import to iMOD
  15. 15. Dublin City Centre Boreholes in 3D
  16. 16. Model Demonstration 16
  17. 17. Next Steps 17 • Meeting with Irish EPA to agree approach • Drilling programme (Jan 2020) • 12 Nested Borehole Installations • Sampling of subsoil for orthophosphate leachability analysis • In-situ Permeability testing • Logger Installation and monitoring • Model Calibration • Model Prediction • Reporting • Offer solutions
  18. 18. Invest in Arup 18 I I A A L L O W S A R U P E M P L O Y E E S T O I N F L U E N C E O N H O W O U R M O N E Y I S I N V E S T E D – 'Invest inArup' (IiA) is the system that is used to apply for research funding – Anyone inArup can apply for funding at any time and there are numerous funds that can be applied to – Projects awarded allocations from a fund have been identified as investments that are deemed to be key to skills and services within a discipline
  19. 19. 3D Urban Ground(water) Models Project 19 • Increasing use and interest for groundwater modelling • No large-scale urban 3D groundwater models… • Feasibility of developing models for other cities • Dublin city as pilot study
  20. 20. 3D iMOD model as a repository 20 • Massive datasets • Compiling digital geological and hydrogeological information for the city • Combining publicly available data with in-house knowledge and GI data • Pooling our previous 3D Models • Continually up date with newAGS data → Platform for future projects
  21. 21. Why 3D Urban Models 21 • Macro trends: Urbanisation, Climate Change, Population Growth, Water Scarcity • Urban resilience planning • City Water Resilience Approach
  22. 22. IIA Interviews 22 Interviews with ground engineering staff across Europe • Are 3D ground(groundwater) models available for the city? • What information is publicly available? (quality, resolution etc.) • How likely would you be to use a 3D model and for which purposes?
  23. 23. Interview Results 23 • Very varied results • Lack of 3D models online • Varied data availability • Accessibility and data format common issue • Big interest!
  24. 24. City Example No. 1 - Milan 24 • Model developed in FeFlow byArup and University of Milan • Rising groundwater levels related to deindustrialisation • Problem reported for Paris, London, Barcelona, Tokyo, Berlin, Birmingham… • Not accesible
  25. 25. City Example No. 2 - Warsaw 25 • Good borehole data, groundwater data and maps • Extensive monitoring by the Polish Geological Institute (PGI) – HYDRO Bank • Accesibility issues
  26. 26. City Example No. 3 - Istanbul 26 • Lack of data • Lack of maps • Lack of digital skills
  27. 27. Why iMOD 27 • Open Source • Ability to pool data then later decide on model size and grid cell size • Powerful 3D visualisation
  28. 28. Next steps 28 • Update model • Bringing inAGS data and keeping model up to date (follow on Invest inArup from the digital team) • Internal guide for GE staff • Resource for new projects
  29. 29. Summary 29 D U B L I N M O D E L I N P R O G R E S S I M O D S U C C E S S F U L AT H A N D L I N G L A R G E D ATA S E T A B I L I T Y T O V I E W A N D C O M PA R E 3 D M O D E L S C H A L L E N G I N G L E A R N I N G C U R V E M A S S I V E R A N G E A C R O S S E U R O P E I N T E R M S O F 3 D M O D E L & D ATA AVA I L A B I L I T Y U R B A N H Y D R O G E O L O G Y K E Y FA C T O R I N C I T Y R E S I L I E N C E T O C L I M AT E C H A N G E