The Hantangang Dam is a
gravity dam
A gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by using only the weight of the material and its resistance against the foundation to oppose the horizontal pressure of water pushing against it. ...
on the
Hantan River
The Hantan River is a river in South Korea, flowing through Gangwon and Gyeonggi Provinces. It is a tributary of the Imjin River, which eventually joins the Han River and empties into the Yellow Sea. The Hantan River is a popular site for white- ...
in
Yeoncheon County
Yeoncheon County (''Yeoncheon-gun'') is a county in Gyeonggi Province, South Korea. The county seat is Yeoncheon-eup (연천읍) and sits on the Korail railroad line connecting Seoul, South Korea, with North Korea (DPRK).
History
A variety of pal ...
,
Gyeonggi
Gyeonggi-do (, ) is the most populous province in South Korea. Its name, ''Gyeonggi'', means "京 (the capital) and 畿 (the surrounding area)". Thus, ''Gyeonggi-do'' can be translated as "Seoul and the surrounding areas of Seoul". Seoul, the na ...
Province, South Korea. Construction on the dam began in 2007 and completed in 2015.
The primary purpose of the dam is
flood control
Flood control methods are used to reduce or prevent the detrimental effects of flood waters."Flood Control", MSN Encarta, 2008 (see below: Further reading). Flood relief methods are used to reduce the effects of flood waters or high water level ...
: it was proposed in 1998 after a series of floods in the late 1990s that 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
The Korea Water Resources Corporation (한국수자원공사, 韓國水資源公社, Korea Water Resources Corporation), or K-water, is the governmental agency for comprehensive water resource development and providing both public and industrial w ...
(K-water).
Construction
Construction started in February 2007 and completed in mid-2015. K-water is responsible for planning and supervision
DL E&C(
Daelim
Daelim Industrial was established in 1939, and its E&C (Engineering & Construction) and Petrochemical Groups are the main lead of the Daelim Business Conglomerate (Chaebol).
The fields covered by Daelim Industrial as one of the top EPC Company ...
industrial.co. Ltd) was undertook 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 and long gravity dam constructed of roller-compacted concrete
Roller-compacted concrete (RCC) or rolled concrete (rollcrete) is a special blend of concrete that has essentially the same ingredients as conventional concrete but in different ratios, and increasingly with partial substitution of fly ash for Po ...
. It has four spillway
A spillway is a structure used to provide the controlled release of water downstream from a dam or levee, typically into the riverbed of the dammed river itself. In the United Kingdom, they may be known as overflow channels. Spillways ensure tha ...
s; a service, emergency, lower sediment discharge and eco-corridor. All four together will have a maximum discharge of . The water storage capacity for the reservoir is .[
]
References
{{Reflist
Dams in South Korea
Flood control in South Korea
Gravity dams
Roller-compacted concrete dams
Yeoncheon County