Nason J. McCullough, Jacob Esterhuizen, Kenneth Green
Swift No. 2 Dam failed suddenly in the early morning of April 21, 2002, following 44 years of successful operation. This is one of the few documented case histories of backward erosion piping to have resulted in a dam breach failure, which took several decades to develop, but once failure initiated led to full breach of the dam within several hours. This paper supplements the case history data of dam failures and documents backward erosion piping being the primary potential dam failure mode. Internal erosion failures have occurred previously, but there are few that have resulted in dam breach, and even fewer that are attributed to backward erosion piping. This paper documents conditions for which a failure occurred due to backward erosion piping based on a significant forensic effort to develop an understanding of the failure mechanism.
$15.00
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