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Identification of Failure Mechanisms Associated with Seepage Barriers in Dams
In a vast majority of cases, seepage barriers increase the reliability of dams. However, it is important to recognize that seepage barriers often drastically increase hydraulic gradients around the boundaries of the barrier, and through any windows or defects in the barrier. As a consequence, seepage barriers give rise to the potential for additional mechanisms of internal erosion and piping in the dam and the foundation. Mechanisms of erosion and piping that are uniquely related to seepage barriers are being investigated through review of measured performance and analytical studies, and are the subject of this paper. The information presented in this paper will be useful in 1) assessing the possibility of internal erosion and piping in dams with seepage barriers, 2) designing to minimize that possibility, and 3) assessing the risks associated with these mechanisms of erosion and piping.
Identification of Failure Mechanisms Associated with Seepage Barriers in Dams
In a vast majority of cases, seepage barriers increase the reliability of dams. However, it is important to recognize that seepage barriers often drastically increase hydraulic gradients around the boundaries of the barrier, and through any windows or defects in the barrier. As a consequence, seepage barriers give rise to the potential for additional mechanisms of internal erosion and piping in the dam and the foundation. Mechanisms of erosion and piping that are uniquely related to seepage barriers are being investigated through review of measured performance and analytical studies, and are the subject of this paper. The information presented in this paper will be useful in 1) assessing the possibility of internal erosion and piping in dams with seepage barriers, 2) designing to minimize that possibility, and 3) assessing the risks associated with these mechanisms of erosion and piping.
Identification of Failure Mechanisms Associated with Seepage Barriers in Dams
Rice, John D. (author) / Duncan, J. Michael (author) / Davidson, Richard R. (author)
Geo-Denver 2007 ; 2007 ; Denver, Colorado, United States
2007-10-14
Conference paper
Electronic Resource
English
Dams , Erosion , Louisiana , Dam failures , Slopes , Embankments , Seepage , Barriers
Identification of Failure Mechanisms Associated with Seepage Barriers in Dams
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