Seongdeok Dam

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Harmony of man and nature, the aesthetics of Seongdeok Dam Seongdeok Dam was constructed to prepare for flood control due to extreme weather events and ensure stable water supply to Gyeongbuk inland areas (Cheongsong, Gyeongsan, Yeongcheon), located in Seongjae-ri, Andeok-myeon, Cheongsong-gun, Gyeongsangbuk-do. Seongdeok Multipurpose Dam is 58.5m high and 274m long, supposed to contain 279 million ㎥ of water in the total volume of 227,000㎥ in Concrete Gravity Dam (C.G.D).The pride of Hyundai E&C continues with its technology and knowhowWhile excavating the levee body, we simultaneously made a diversion channel box to convert flowing water and cofferdams at upstream and downstream We, Hyundai E&C, simultaneously constructed both the main dam and a stilling basin (a method of decreasing water energy with the use of a hydraulic jump as an energy dissipator). Moreover, watertightness, bearing capacity, and homogeneity on all sides of the dam foundation were improved by using foundation treatment methods including consolidation and grouting.The C.G.D can secure stability even in case of overflow, so it is a construction method frequently used lately in response to extreme weather events. Accordingly, Seongdeok Dam also adopted the concrete gravity method. However, we also underwent many trials and errors in the early stages of construction since it was constructed 20 years after the construction of Hapcheon Dam and designed with Type 4 cement (low-heat cement) targeting 91-day strength instead of commonly used Type 1 cement.Thus, Hyundai E&C strived to increase placement efficiency and improve quality by applying Type 4 cement with the understanding on its characteristics through various experiments on construction and quality for technical approach and the accumulation of knowhow. Such efforts were also recognized by the ordering organization and other companies, so we sustained the pride of Hyundai E&C because the interested parties visited us to learn our knowhow.

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