dredging methods in the us and south korea pierre y. julien colorado state university world water...
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![Page 1: Dredging Methods in the US and South Korea Pierre Y. Julien Colorado State University World Water Forum Daegu, April 2015](https://reader036.vdocuments.us/reader036/viewer/2022070416/5697c0231a28abf838cd3e54/html5/thumbnails/1.jpg)
Dredging Methods in the US and South Korea
Pierre Y. JulienColorado State University
World Water ForumDaegu, April 2015
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• Dipper Dredge, NY, USACE
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Clamshell Dredge
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• Mystic River Clamshell Dredge, New England District, USACE
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Hopper Dredge
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Dustpan Dredge
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Cutterhead Dredge
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• Closed-nose Basket Cutterhead Dredge, Delaware River, USACE
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• Open-nose Basket Cutterhead Dredge, Savannah River , USACE
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Disposal site for dredged material
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From JulienRiver MechanicsCUP 2002
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• Middle Rio Grande, NM, USBR
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• Middle Rio Grande, NM, USBR
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• Middle Rio Grande, NM, USBR
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River Widening and RetrofittingNakdong River near Busan, South Korea
Pusan city
Nakdong River
Gupo bridge
NREB
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Nakdong River Estuary Barrage
• from Ji et al. ASCE-JHE, Nov. 2011
Nakdong River Estuary Barrage
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16 weirs were constructed under the Four River Restoration Project (2009-2012)
After the construction of weirs, sedimentation problems have been occurring upstream of Weirs
Feb. 3rd, 2014
Problem Statement
Ipo Weir 10 km upstream (Jun. 18th, 2012)
• From Hwayoung Kim, PhD research at CSU, 2016
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Thank you.Questions?
• Photo of Sangju Weir in South Korea from Hwayoung Kim