LE ORDINANZE EVENTO INTERVENTI INTERVENTI O.P.C.M 3339/04 O.P.C.MO.P.C.M 3309/03 3309/03 FIN. REG 2006 - 2007 FIN. REG 2005 RISTORO DANNI METEREOLOGICO The importanceThe hyrogeological of the PCM 3309/2003 PCM instability Order 55 Survey of the hyrogeological instability EVENTO • Team of technicians: METEREOLOGICO • Civil protection of the region • (Protezione Civile della Regione) • Regional department of the environment and public works (Direzione Regionale dell’Ambiente e dei Lavori Pubblici) LE ORDINANZE LE RISTORO DANNI RISTORO • Regional head of the agricultural, natural and forestry resources (Direzione Regionale delle Risorse Agricole, Naturali e Forestali) • Basin authority of the Northern Adriatic region (Autorità di Bacino dell’Alto Adriatico) O.P.C.M 3309/03 O.P.C.M 3309/03 O.P.C.M • CNR-IRPI • Department of geological science, environmental and marine from the University of Trieste (Dipartimento di Scienze Geologiche, Ambientali e Marine dell’Università di Trieste) O.P.C.M 3339/04 • On the basis of: • LASER scan surveys by helicopter • High-resolution ortophotos (15 cm) • Field survey campaign INTERVENTI FIN. REG FIN. REG 2005 • The survey for hydrogeological instability was after the alluvial flood event of August 29th 2003 based on which a GIS of hydraulic and geological instability was created. These are basic elements for the protection of the territory INTERVENTI and the population 56 FIN. REG FIN. REG 2006 - 2007 LE ORDINANZE EVENTO INTERVENTI INTERVENTI O.P.C.M 3339/04 O.P.C.MO.P.C.M 3309/03 3309/03 FIN. REG 2006 - 2007 FIN. REG 2005 RISTORO DANNI METEREOLOGICO • Flood2003 29agosto • Map events of Hydrogeological events 57 LE ORDINANZE EVENTO INTERVENTI INTERVENTI O.P.C.M 3339/04 O.P.C.MO.P.C.M 3309/03 3309/03 FIN. REG 2006 - 2007 FIN. REG 2005 RISTORO DANNI METEREOLOGICO • • 17 km Survey of geological and hydraulic failures for over 1108 events of landslides, over a total of 6 km 2 Hydrogeological events 2 58 Order from the president of the Council of Ministers n°3309 del 11/9/2003 EVENTO Perimeter of the area in hydrogeological risk METEREOLOGICO Main hydraulic issues identified Malborghetto: Hydraulic failure in the sector next to the central pumping station SNAM Santa Caterina Viadotti SS 13: LE ORDINANZE LE RISTORO DANNI RISTORO Possible overflow into the productive infrastructure Santa Caterina Confluenza Fella-Rio Bianco: Residential builiding and floodplain prone to be flood San Leopoldo sponda destra: O.P.C.M 3309/03 O.P.C.M 3309/03 O.P.C.M Possible flood into the town Pontebba at the upstream confluence with the Uccelli river: Possibile flooding and damage over the train way Udine–Tarvisio Pontebba capoluogo: O.P.C.M 3339/04 Hydraulic failure from the sector of palaghiaccio e ex caserme Pietratagliata: Erosion in the slope at the basement level of the landslide INTERVENTI FIN. REG FIN. REG 2005 Dogna: Possible inundation into the town Moggio Udinese in the confluence Fella – Aupa: Possible overflow into the industrial area INTERVENTI 59 FIN. REG FIN. REG 2006 - 2007 LE ORDINANZE EVENTO INTERVENTI INTERVENTI O.P.C.M 3339/04 O.P.C.MO.P.C.M 3309/03 3309/03 FIN. REG 2006 - 2007 FIN. REG 2005 RISTORO DANNI METEREOLOGICO and preventionand activities Order PCM 3309/03 PCM Order Preparation 60 LE ORDINANZE EVENTO INTERVENTI INTERVENTI O.P.C.M 3339/04 O.P.C.MO.P.C.M 3309/03 3309/03 FIN. REG 2006 - 2007 FIN. REG 2005 RISTORO DANNI METEREOLOGICO Ordinanza del Presidente delConsiglioOrdinanza delPresidente deiMinistri n Hydraulic analysis the of Fella river the for planification the and intervention strategy FIRST STUDY FOR THE RESTORATION OF RESTORATION THE FOR STUDY FIRST aimed reductionthe to flood the of risk THE TERRITORY ° 3309 del 11/9/2003 del 3309 61 Hydraulic analysis of the Fella river for the planning of EVENTO METEREOLOGICO interventions to reduce the risk for flooding Forte di Malborghetto Valbruna LE ORDINANZE LE RISTORO DANNI RISTORO O.P.C.M 3309/03 O.P.C.M 3309/03 O.P.C.M O.P.C.M 3339/04 Total area of the Hydrografic basin 710 km2 INTERVENTI FIN. REG FIN. REG 2005 Confluenza Fella- Modelled lenght: 42.8 km Tagliamento - Amaro Number of hydraulic sections modelled: N° 225 INTERVENTI 62 FIN. REG FIN. REG 2006 - 2007 Order from the President of the Council of ministers n°3309 del 11/9/2003 EVENTO Hydraulic analysis of the Fella river for the planning of METEREOLOGICO interventions to reduce the risk of flooding • Conceptual approach of the study: LE ORDINANZE LE • Adequation of the morphology of the river channel RISTORO DANNI RISTORO • Hydrological analysis of the hydrographic catchment from the Fella river • Implementation of a numerical model for the conceptual O.P.C.M 3309/03 O.P.C.M 3309/03 O.P.C.M hydrauclic simulation • Numerical simulation for the wave propagation in the full section O.P.C.M 3339/04 • Data analysis and identification from the hydraulic hazard • Elaboration of a conceptual proposal for the reduction of hydraulic hazard using the appropiate criteria INTERVENTI FIN. REG FIN. REG 2005 • Comparison of the hydraulic modelling according to the state of the project • Representation of the project proposal INTERVENTI • Final consideration of the residual risk 63 FIN. REG FIN. REG 2006 - 2007 Order from the President of the Minister Council n°3309 of 11/9/2003 EVENTO Generation of the morphological model for the hydraulic modelling METEREOLOGICO File dati LS densità da 1 a 5 Particular DEM at Moggio Udinese punti/mq in formato (x y z) Regular DEM grid with m steo … color scale representation 2376326 5139092 318.88 2376325 5139090 318.89 LE ORDINANZE LE RISTORO DANNI RISTORO 2376324 5139090 319.03 2376324 5139089 318.85 2376323 5139090 318.76 2376322 5139095 318.68 2376321 5139095 318.73 O.P.C.M 3309/03 2376321 5139095 318.7 O.P.C.M 3309/03 O.P.C.M 2376322 5139094 318.74 2376322 5139093 318.73 2376323 5139090 318.77 2376321 5139092 318.58 2376321 5139093 318.49 2376320 5139093 318.6 O.P.C.M 3339/04 …. 3D view of the DEM INTERVENTI FIN. REG FIN. REG 2005 INTERVENTI 64 FIN. REG FIN. REG 2006 - 2007 Ordinanza del Presidente del Consiglio dei Ministri n°3309 del 11/9/2003 EVENTO The modelling of the Fella River METEREOLOGICO • One-dimensional hydraulic numerical model in a dynamic mode by LE ORDINANZE LE RISTORO DANNI RISTORO the execution of: • 225 hydraulic sections for a total of 42.8 km of the river bed • Modelling of hydraulic operation of 26 structures (bridges, weirs O.P.C.M 3309/03 and dams) O.P.C.M 3309/03 O.P.C.M • Numerical simulation of HEC-RAS in a permanent mode • Calculation of the profile for full section condition Fella-Ugovizza-Pontebba Plan: Plan 01 Fella-Ugovizza-Pontebba Plan: Plan 01 Geom: Idraulica Fella Ugovizza-Pontebba Geom: Idraulica Fella Ugovizza-Pontebba Fella-Ugovizza-Pontebba Plan: Plan 01 SEZ 80 (Pr 12915.34 m) Ponte ex FFSS Bagni di Lusinzza Geom: Idraulica Fella Ugovizza-Pontebba .04 .02 .04 .04 .02 .04 001 Legend Legend O.P.C.M 3339/04 Legend EG PF 1 EG PF 1 EG PF 1 WS PF 1 WS PF 1 WS PF 1 Ground 630 Ground Ground 720 Left Levee Bank Sta Bank Sta Right Levee 710 625 715 620 700 710 INTERVENTI 615 FIN. REG FIN. REG 2005 Elevation (m ) Elevation (m) Elevation Elevation (m) Elevation 690 610 705 605 680 700 600 SEZ 38 (Pr 5408.62 m ) Ponte S.Caterina SEZ 37 (Pr 5323.44 m ) Ponte SS 13 a S.Caterina SEZ 35 (Pr 5208.62 m ) SEZ 32 (Pr 5008.62 m ) SEZ 31 (Pr 4808.62 m ) 100 150 200 250 9000 9200 9400 9600 9800 INTERVENTI 100 150 200 250 Main Channel Distance (m) Station (m) Station (m) 65 FIN. REG FIN. REG 2006 - 2007 Ordinanza del Presidente del Consiglio dei Ministri n°3309 del 11/9/2003 EVENTO METEREOLOGICO Generation of the 3D representation of the areas for excavation and filling DEM _ • Substraction from the digital elevation model acquired by LE ORDINANZE LE RISTORO DANNI RISTORO of the area covered means of with the digital laser laser scan scan model of the project profile, aiming O.P.C.M 3309/03 O.P.C.M 3309/03 O.P.C.M at the digital model of DEM of the = excavation with the project thin-meandering profile channels preserved O.P.C.M 3339/04 INTERVENTI FIN. REG FIN. REG 2005 DEM channels bars in INTERVENTI excavation 66 FIN. REG FIN. REG 2006 - 2007 Ordinanza del Presidente del Consiglio dei Ministri n°3309 del 11/9/2003 EVENTO Examples of 3D representation of the proposed hydraulic design METEREOLOGICO Taken from LE ORDINANZE LE RISTORO DANNI RISTORO the study at Pontebba Pitratagliata and at O.P.C.M 3309/03 O.P.C.M 3309/03 O.P.C.M Malborghetto Valbruna O.P.C.M 3339/04 INTERVENTI FIN. REG FIN. REG 2005 INTERVENTI 67 FIN. REG FIN. REG 2006 - 2007 Order from the President of the Council of Ministers n°3309 del 11/9/2003 EVENTO Preliminary calculation at large-scale of the excess volumes in the METEREOLOGICO river bed, net volume movilised for the reduction of the hydraulic hazard- Fella rive and affluents LE ORDINANZE LE RISTORO DANNI RISTORO Movilised Tratto volume(m3) 1- Affluents of Fella up to Pontebba (rio Uque, rio Malborghetto, rio 1’000’000 Bianco, rio Uccelli, torr. Pontebbana-Bombaso) e torr.