Closing an open system: Pore pressure changes in permeable edifice rock at high strain rates
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- 作者：Michael J. Heapa ; heap@unistra.fr" class="auth_mail" title="E-mail the corresponding author ; Fabian B. Wadsworthb
- 关键词：Pore pressure ; Strain rate ; Andesite ; Drained ; Undrained ; Outgassing
- 刊名：Journal of Volcanology and Geothermal Research
- 出版年：2016
- 出版时间：1 April 2016
- 年：2016
- 卷：315
- 期：Complete
- 页码：40-50
- 全文大小：1637 K
文摘
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“Undrained” describes deformation on a timescale that precludes fluid movement.
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In this case, dilatancy reduces pore pressure and compaction increases pore pressure.
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Microcracked and porous volcanic rocks do not exhibit dilatancy hardening.
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Undrained compaction does not result in pore pressure embrittlement.
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Implications for edifice stability and outgassing are discussed.