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Mikko Huokuna, Finnish Environment Institute

2 nd IMPACT Workshop M o i Rana, Norway 12/13 th Septemper 2002. Life after RESCDAM? Application and future developments for emergency planning in Finland. Mikko Huokuna, Finnish Environment Institute. RESCDAM. Development of Rescue Actions Based on Dam-Break Flood Analysis.

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Mikko Huokuna, Finnish Environment Institute

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  1. 2nd IMPACT Workshop Mo i Rana, Norway 12/13th Septemper 2002 Life after RESCDAM? Application and future developments for emergency planning in Finland • Mikko Huokuna, Finnish Environment Institute

  2. RESCDAM • Development of Rescue Actions Based on • Dam-Break Flood Analysis Coordinator: Finnish Environment Institute

  3. Partners: ENEL Research, Hydraulic and Structural Centre (Milan) EDF Electricite de France, National Hydraulic Laboratory (Paris) Helsinki University of Technology Emergency Services College (Kuopio) Seinäjoki Rescue Centre West Finland Regional Environment Centre

  4. The pilot project of RESCDAM was the embankment dam of the Kyrkösjärvi reservoir located in Seinäjoki in Western Finland. The main purpose of the RESCDAM project was to develop emergency action planning for dams

  5. The project work was divided into three sub-projects: • Risk Assessment (Analysis) • Dam Break Hazard Analysis • Emergency Action Planning International Seminar and Workshop was arranged on October 2-5, 2000 in Seinäjoki

  6. Kyrkösjärvi Dam Break Hazard Analysis Model simulations of the erosion dam-break event • an erosion model developed in Finland One-dimensional flow simulation • DYX.10 -model (finite difference method) Two-dimensional flow simulation • Telemac-2d, EDF (Finite Element Method) • FLOOD-2d,ENEL (Finite Volume Method)

  7. Kyrkösjärvi Dam Break Hazard Analysis Assessment of breach-hydrograph has a lot of uncertainties After sensitivity analyses two breach hydrographs were chosen for flood analyses with 2-d models • HQ1/100 Flood case • MQ Case

  8. C B A Three breach locations considered

  9. FLOOD MAPS FOR EMERGENCY ACTION PLANNING • Flood propagation • Max depth • Max flow velocity • Max damage parameter • (flow velocity x depth)

  10. Flood maps

  11. The use of GIS in analysing calculation results The damage parameter (velocity x depth) map

  12. The locations of the houses from the buildings database

  13. The houses effected by the HQ dam breach case

  14. The houses for which the damage parameter is >3

  15. DEVELOPMENT OF EMERGENCY ACTIONS Recommendations to update the Finnish dam safety guidelines Emergency/rescue action plan for the Kyrkösjärvi dam

  16. AFTER RESCDAM The work to update the dam safety code of practice is going on The internet based dam safety information system is under development Updating of the Emergency Action Plans for the P-dams is going on Some research: Effect of freezing and melting on embankment stability

  17. Updating of the dam safety code of practice • No major changes • Most changes to: • safety monitoring and inspections • dam break hazard analysis (presentation of the results) • Emergency action planning and advance information

  18. Internet based dam safety information system • information on about 450 dams (now for a. 300 dams) • information on P-dams (39) is going to include • general information of the dam • monitoring information • documents, measurements • emergency action plan • Dam-break hazard analyses (new analyses will be documented in a certain way to be easily available for more analyses) • Flood maps

  19. Work to update Emergency action plans for P-Dams is going on • There are 39 P-Dams in Finland A dam is classified as a P-dam if in an event of an accident, it may: -endanger human life or healthy -seriously endanger the environment or property

  20. Work to update Emergency action plans for P-Dams is going on • All the P-dams in Finland have some kind of emergency action plan but many of the plans should be updated and revised • People living in the risk area of the dam have to be informed about the risk (in advance) and about the emergency action plan • Training of emergency action • The plans have to be tested in training

  21. Emergency action training for Kyrkösjärvi dam Organized by Seinäjoki Rescue Centre and West Finland Regional Environment Centre, September 26.-27. 2001

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