气候变化领域集成服务门户(CCPortal): Brief communication: The influence of mica-rich rocks on the shear strength of ice-filled discontinuities

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DOI	10.5194/tc-14-1849-2020
	Brief communication: The influence of mica-rich rocks on the shear strength of ice-filled discontinuities
	Mamot P.; Weber S.; Lanz M.; Krautblatter M.
发表日期	2020
ISSN	19940416
起始页码	1849
结束页码	1855
卷号	14 期号:6
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.
英文关键词	degradation; discontinuity; failure mechanism; limestone; lithology; mica; permafrost; sampling; schist; shear strength; temperature
语种	英语
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202152
作者单位	Department of Landslide Research, Technical University of Munich, Munich, Germany
推荐引用方式 GB/T 7714	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],2020,14(6).
APA	Mamot P.,Weber S.,Lanz M.,&Krautblatter M..(2020).Brief communication: The influence of mica-rich rocks on the shear strength of ice-filled discontinuities.Cryosphere,14(6).
MLA	Mamot P.,et al."Brief communication: The influence of mica-rich rocks on the shear strength of ice-filled discontinuities".Cryosphere 14.6(2020).