Country South Korea Status Under construction Height 84 m Construction began 2007 Spillway 4 | Purpose Flood control Opening date 2015 est. Owner K-water Impound Hantan River | |
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Location Yeoncheon County, Gyeonggi Province Type of dam Gravity, roller-compacted concrete | ||
Hantangang dam
The Hantangang Dam is a gravity dam currently under construction on the Hantan River in Yeoncheon County, Gyeonggi Province, South Korea. Construction on the dam began in 2007 and it is expected to be completed in mid-2015. The primary purpose of the dam will be flood control and it was proposed in 1998 after a series of deadly floods in the late 1990s. These floods killed 128 people, displaced over 31,000 and caused about US$900 million in property damage. Initially designed as a multi-purpose project, the design was changed solely to flood control in 2006 due to the concerns of residents upstream. It is being implemented by Korea Water Resources Corporation (K-water).
Contents
Construction
Construction started in February 2007 and is expected to be complete in mid-2015. K-water is responsible for planning and supervision. Daelim is undertaking the construction as a leading contractor. Not only to secure the stability against overflow during the flood season but also to reduce the construction cost through the mechanized construction fitting for the mega construction, the roller-compacted concrete (RCC) method has been applied. About 300 families will be displaced when the reservoir is filled.
Design
The Hantangang Dam will be a 83.5 m (274 ft) and 690 m (2,260 ft) long gravity dam constructed of roller-compacted concrete. It will have four spillways; a service, emergency, lower sediment discharge and eco-corridor. All four together will have a maximum discharge of 1,950 m3/s (69,000 cu ft/s). The water storage capacity for the reservoir is 270,000,000 m3 (220,000 acre·ft).