Mechanics of dual-mode dilative failure in subaqueous sediment deposits
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- 作者：Yao You ; 1 ; yaoyou@utexas.edu" class="auth_mail ; Peter Flemings ; David Mohrig
- 关键词：slope failure ; subaqueous ; pore pressure ; dilation ; breaching
- 刊名：Earth and Planetary Science Letters
- 出版年：1 July 2014
- 年：2014
- 卷：397
- 期：Complete
- 页码：10-18
- 全文大小：1809 K
文摘
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We use flume experiment to show a new type of slope failure in sandy deposit.
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Slope failure cyclically alternates between two modes: breaching and sliding.
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Breaching: sediments released grain by grain over a near 90° slope that retreats at a constant speed of mm/s.
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Sliding: a triangular sediment wedge slides along an 80° slope.
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Coefficient of consolidation controls the frequency of sliding.