Interaction between hydrogeology and hydraulic design: a few examples
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Transcript of Interaction between hydrogeology and hydraulic design: a few examples
![Page 1: Interaction between hydrogeology and hydraulic design: a few examples](https://reader036.fdocuments.net/reader036/viewer/2022062514/55909e2e1a28ab89148b4723/html5/thumbnails/1.jpg)
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B. Visconti, C. AngelinoPolithema Società di Ingegneria, Torino, www.polithema.net
Problematiche idrogeologiche legate all’ingegneria idraulica: esempi
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IL CANALE QUINTINO SELLA
A NOVARA
Approfondimento del piano di scorrimento del canale ed interferenze con la falda in fase
di cantiere ed in fase di esercizio
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Idrogeologia, idraulica, geotecnica
• indagine geotecnica ed idrogeologica preliminare
• soggiacenza, permeabilità, etc.
• caratterizzazione meccanica
• definizione delle interferenze
• fase di cantiere
• esercizio dell’opera
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Moti di filtrazione e sottospinte
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Controllo delle acque di falda
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Sifonamento e stabilità geotecnica
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Esercizio dell’opera
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ichele RILEVATI ARGINALI E DIGHE IN TERRA
Stabilità idraulica e geotecnica
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Idrogeologia, idraulica, geotecnica
• filtrazione
• soggiacenze della falda, andamento temporale
• stima dei livelli di piena
• stabilità geotecnica
• rapido svaso
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Il modello
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Il gradiente idraulico
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Il percorso di filtrazione
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Pressioni totali e linee equipotenziali
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LA FRANA DEL CASSAS
Dall’idrologia agli acquedotti attraverso il consolidamento di un versante in frana con
DGPV tramite una galleria drenante
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Idraulica, idrogeologia, geotecnica, risk management, acquedotti
• Una grande frana alpina
• Troppa pioggia …..
• Una falda che sale …
• Un intervento mitigativo complesso
• Un possibile beneficio “di ritorno”
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1000 m s.l.m.
BOOM!
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0
0,5
1
1,5
2
2,5
3
3,5
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01-giu-99 09-set-99 18-dic-99 27-mar-00 05-lug-00 13-ott-00 21-gen-01 01-mag-01 09-ago-01
Plu
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ile (
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)
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med
ia (
cm/a
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240j300j360jdépl. I3 (cm/an)dépl. I4 (cm/an)Pz3Pz4
Idrologia
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0
2
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Comportamento della
probabilità di transizione
in funzione del livello
freatico
(m)
Idrogeologia e geotecnica
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La mitigazione
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