Dredging Methods in the US and South Korea

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Presentation transcript:

Dredging Methods in the US and South Korea Pierre Y. Julien Colorado State University World Water Forum Daegu, April 2015

Dipper Dredge, NY, USACE

Clamshell Dredge

Mystic River Clamshell Dredge, New England District, USACE

Hopper Dredge

Dustpan Dredge

Cutterhead Dredge

Closed-nose Basket Cutterhead Dredge, Delaware River, USACE

Open-nose Basket Cutterhead Dredge, Savannah River , USACE

Disposal site for dredged material

From Julien River Mechanics CUP 2002

Middle Rio Grande, NM, USBR

Middle Rio Grande, NM, USBR

Middle Rio Grande, NM, USBR

River Widening and Retrofitting Nakdong River near Busan, South Korea This provides a schematic of the Greenville Reach and the cutoff

Nakdong River Estuary Barrage from Ji et al. ASCE-JHE, Nov. 2011

Problem Statement 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 Ipo Weir 10 km upstream (Jun. 18th, 2012) From Hwayoung Kim, PhD research at CSU, 2016

Thank you. Questions? Photo of Sangju Weir in South Korea from Hwayoung Kim

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