DOI: 10.5194/tc-14-1849-2020
论文题名: Brief communication: The influence of mica-rich rocks on the shear strength of ice-filled discontinuities
作者: Mamot P. ; Weber S. ; Lanz M. ; Krautblatter M.
刊名: Cryosphere
ISSN: 19940416
出版年: 2020
卷: 14, 期: 6 起始页码: 1849
结束页码: 1855
语种: 英语
英文关键词: degradation
; discontinuity
; failure mechanism
; limestone
; lithology
; mica
; permafrost
; sampling
; schist
; shear strength
; temperature
英文摘要: A temperature- and stress-dependent failure criterion for ice-filled rock (limestone) joints was proposed in 2018 as an essential tool to assess and model the stability of degrading permafrost rock slopes. To test the applicability to other rock types, we conducted laboratory tests with mica schist and gneiss, which provide the maximum expected deviation of lithological effects on the shear strength due to strong negative surface charges affecting the rock ice interface. Retesting 120 samples at temperatures from - 10 to -0:5 °C and normal stress of 100 to 400kPa, we show that even for controversial rocks the failure criterion stays unaltered, suggesting that the failure criterion is transferable to mostly all rock types. © 2020 Author(s). This work is distributed under the Creative Commons Attribution 4.0 License. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164530
Appears in Collections: 气候变化与战略
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作者单位: Department of Landslide Research, Technical University of Munich, Munich, Germany
Recommended Citation:
Mamot P.,Weber S.,Lanz M.,et al. Brief communication: The influence of mica-rich rocks on the shear strength of ice-filled discontinuities[J]. Cryosphere,2020-01-01,14(6)