今天是2024年12月18日 星期三 ynufe 退出

The impacts of hysteresis on variably saturated hydrologic response and slope failure

http://www.firstlight.cn2015/7/1

[作者] Brian A. Ebel Keith Loague Ronaldo I. Borja

[单位] Stanford University

[摘要] This investigation employs 3D, variably saturated subsurface flow simulation to examine hysteretic effects upon the hydrologic response used to drive unsaturated slope stability assessments at the Coos Bay 1 (C…

[关键词] Hysteresis InHM Landslide Unsaturated Modeling Hillslope

This investigation employs 3D, variably saturated subsurface flow simulation to examine hysteretic effects upon the hydrologic response used to drive unsaturated slope stability assessments at the Coos Bay 1 (CB1) experimental catchment in the Oregon Coast Range, USA. Slope stability is evaluated using the relatively simple infinite slope model for unsaturated soils driven by simulated pore-water pressures for an intense storm that triggered a slope failure at CB1 on 18 November 1996. Simulations employing both hysteretic and non-hysteretic soil–water retention curves indicate that using either the drying soil–water retention curve or an intermediate soil–water retention curve that attempts to average the wetting and drying retention curves underestimates thenear-surface hydrologic response and subsequently the potential for slope failure. If hysteresis cannot be considered in the hydrologic simulation, the wetting soil–water retention curve, which is seldom measured, should be used for more physically based slope stability assessment. Without considering hysteresis or using thewetting soil–water retention curve, the potential for landsliding in unsaturated materials may be underestimated and a slope failure could occur when simulations predict stability.

存档附件原文地址

原文发布时间:2015/7/1

引用本文:

Brian A. Ebel;Keith Loague;Ronaldo I. Borja.The impacts of hysteresis on variably saturated hydrologic response and slope failurehttp://ynufe.firstlight.cn/View.aspx?infoid=3516020&cb=Z07870000000
发布时间:2015/7/1.检索时间:2024/12/18

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...