Identification of possible new failure mechanisms for the collapse of tailings dams

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Author(s)
Chu, Jian
Leong, Wing Kai
Balasubramaniam, Bala
Lo, Sik-Cheung Robert
Griffith University Author(s)
Year published
2007
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Show full item recordAbstract
Static liquefaction has been considered as one of the most common failure mechanisms for tailings dams. However, for tailings with relatively high permeability, the assumption of an undrained condition becomes questionable under static loading conditions. In fact, many granular soil or tailings at its in-situ density may not liquefy under static, undrained conditions. In this paper, the problems with the current design approaches for tailings dams are identified. Laboratory test results are presented to demonstrate that granular soil can become unstable under drained or nonundrained conditions. Based on the testing ...
View more >Static liquefaction has been considered as one of the most common failure mechanisms for tailings dams. However, for tailings with relatively high permeability, the assumption of an undrained condition becomes questionable under static loading conditions. In fact, many granular soil or tailings at its in-situ density may not liquefy under static, undrained conditions. In this paper, the problems with the current design approaches for tailings dams are identified. Laboratory test results are presented to demonstrate that granular soil can become unstable under drained or nonundrained conditions. Based on the testing data, two possible new failure mechanisms for tailings dams are proposed.
View less >
View more >Static liquefaction has been considered as one of the most common failure mechanisms for tailings dams. However, for tailings with relatively high permeability, the assumption of an undrained condition becomes questionable under static loading conditions. In fact, many granular soil or tailings at its in-situ density may not liquefy under static, undrained conditions. In this paper, the problems with the current design approaches for tailings dams are identified. Laboratory test results are presented to demonstrate that granular soil can become unstable under drained or nonundrained conditions. Based on the testing data, two possible new failure mechanisms for tailings dams are proposed.
View less >
Conference Title
Proceedings of the 10th Australia New Zealand Conference on Geomechanics
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Copyright Statement
© 2007 AGS. The attached file is reproduced here in accordance with the copyright policy of the publisher. Use hypertext link for access to publisher's website.