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DHV to improve Nakdong Barrier

The Nakdong Barrier in South Korea is being given a €125M (£112M) structural makeover by DHV.

DHV originally constructed the barrier and are now collaborating with Samsung Engineering and Construct and Korean engineering consultancy Yooshin to make vital improvements.

The core function of the 300m long barrier is to manage the water flow of the Nakdong River by redirecting excess flow to increase drainage capacity.

When working at its full potential the structure provides improvements to ecology, irrigation and flood-water safety for local residents but has recently been stretched to its limit by climate change.

“Because of climate change and sedimentation in the river’s feeder channels, there is a need for extra drainage capacity.”

DHV project director Wim Klomp

The new barrier is to be built on the edge of the port city of Busan, which, with 4.6M inhabitants, is the second largest city in Korea and the country’s most important port.

DHV’s project director Wim Klomp says, “the barrier can be compared to the Haringvliet barrier in the Netherlands.

“The big difference is that the flood threat in Korea doesn’t come from the sea, but from the rivers themselves. This means that the barrier’s curvature is turned toward the sea.”

“Because of climate change and sedimentation in the river’s feeder channels, there is a need for extra drainage capacity,” explains Klomp.

The client is K-water, which is part of the Korean directorate for public works and water management. “The client,” says Klomp, “has a great deal of confidence in DHV and we have worked directly for K-water on several occasions.

Samsung and Yooshin are happy with the contribution of our international water expertise and with the client’s confidence regarding our participation in the project.”

Construction on the project begins in mid 2010 and project completion is scheduled for mid 2012.

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