Technical Features of Shin-Katsurazawa Dam to Be Coaxially Raised with Existent Dam and Measures to Solve the Problems Involved
Shun Sasaki, Koichiro Suzuki, Atsuhisa Yoshino, and Seiichi Chouno
Ikushunbetsu River Dam Construction Office, Sapporo Development and Construction Department,
Hokkaido Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism
91-1 Ikushunbetsu Yamate-cho, Mikasa-shi, Hokkaido 068-2113, Japan
Among the dams managed by Japan’s Ministry of Land, Construction and Transport, Shin-Katsurazawa Dam is the first dam to be renewed by coaxially raising the embankment of an existent dam. Raising the embankment of an existent dam that is in operation involves various problems that are different from the ones involved in constructing a new dam, such as evaluation of the foundation base rock and integration of concrete of the old and new dam bodies. The technical features of Shin-Katsurazawa Dam as a coaxially raised dam and measures taken to solve the various problems involved are presented.
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