Some incidents and valuable lessons from construction work experience of concrete face rockfill dam - Thanh Hoa

Abstract

Cua Dat reservoir was started construction in 2005 and completed in 2010. Structural dam of the Cua
Dat reservoir is kind of Concrete Face Rockfill Dam (CFRD) with a waterproof face of reinforced
concrete. Now, Cua Dat Reservoir has been in safe operation for nearly 10 years. However, during the
construction process, a number of unfortunate technical incidents occurred, increasing construction
investment costs that engineers did not anticipate. Therefore, this paper will summarize a few major
incidents, analyze the causes and remedies to learn lessons for officials designing, constructing and
managing irrigation and hydroelectric works in the future, especially construction works applying
CFRD technology.
Keywords: Cua Dat reservoir, CFRD, incident dam break, drainage reverse, escape not.