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Shear Mechanical Behaviours and Multistrength Parameter Characteristics of Fault Gouge

文献类型：期刊论文

作者Bao, Han1; Qi, Qun1; Lan, Hengxing2,3; Yan, Changgen1; Xu, Wei1; Liu, Xin3; Li, Langping2
刊名ADVANCES IN CIVIL ENGINEERING
出版日期2019-11-18
卷号2019页码:14
ISSN号1687-8086
DOI10.1155/2019/4208032
通讯作者Bao, Han(baohangeo@163.com) ; Qi, Qun(2017221102@chd.edu.cn)
英文摘要Fault gouge has special mechanical properties and remarkable engineering effects. Using a ring shear test, the strength properties of the differently colored remolded fault gouges of the Shendaogou Fault in Yan'an were studied by changing moisture contents and normal stresses. Chlorite and illite are the main clay minerals in fault gouges; differences in mineral composition make fault gouges appear in different colors. Besides clay minerals, the dried fault gouges disintegration in water is also due to the transformation of gypsum. The gradation of green fault gouge and multicolor fault gouge is better than that of the red fault gouge, while the fault gouges' strain softening properties become weaker as the coarse grain content increases. Affected by water content and normal stress, the shear planes can be divided into three failure modes: peeling failure, grooved failure, and sliding failure. With the increase of water content, there will be a significant weakening on cohesion and friction angle. A new parameter, the "Normal Stress Threshold (NST)," is introduced as a critical value for the emergence of the strain hardening phenomenon, and the NSTs of different fault gouges are significantly different. The functions obtained from the relation of residual strength, peak strength, and normal stress can be used to calculate shear strength parameters under any normal stresses. In addition, the residual strength of fault gouge is obviously different from clay and loess, which can be qualitatively explained by clay particle contents.
WOS关键词RESIDUAL STRENGTH ; PERMEABILITY ; LANDSLIDE ; LOESS ; WATER ; EVOLUTION ; APPARATUS ; FRICTION ; PLATEAU ; STRESS
资助项目National Natural Science Foundation of China[41790443] ; National Natural Science Foundation of China[41807246] ; National Natural Science Foundation of China[41927806] ; Natural Science Foundation of Shaanxi Province[2018JQ4017] ; Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province ; Scientific Innovation Practice Project of Postgraduates of Chang'an University[300103002033] ; Fundamental Research Funds for the Central Universities[300102218412] ; Fundamental Research Funds for the Central Universities[300102219213]
WOS研究方向Construction & Building Technology ; Engineering
语种英语
WOS记录号WOS:000501204900001
出版者HINDAWI LTD
资助机构National Natural Science Foundation of China ; Natural Science Foundation of Shaanxi Province ; Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province ; Scientific Innovation Practice Project of Postgraduates of Chang'an University ; Fundamental Research Funds for the Central Universities
源URL[http://ir.igsnrr.ac.cn/handle/311030/130365]  
专题中国科学院地理科学与资源研究所
通讯作者Bao, Han; Qi, Qun
作者单位1.Changan Univ, Sch Highway, Xian 710064, Shaanxi, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China
3.Changan Univ, Sch Geol Engn & Geomat, Xian 710064, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Bao, Han,Qi, Qun,Lan, Hengxing,et al. Shear Mechanical Behaviours and Multistrength Parameter Characteristics of Fault Gouge[J]. ADVANCES IN CIVIL ENGINEERING,2019,2019:14.
APA Bao, Han.,Qi, Qun.,Lan, Hengxing.,Yan, Changgen.,Xu, Wei.,...&Li, Langping.(2019).Shear Mechanical Behaviours and Multistrength Parameter Characteristics of Fault Gouge.ADVANCES IN CIVIL ENGINEERING,2019,14.
MLA Bao, Han,et al."Shear Mechanical Behaviours and Multistrength Parameter Characteristics of Fault Gouge".ADVANCES IN CIVIL ENGINEERING 2019(2019):14.

入库方式： OAI收割

来源：地理科学与资源研究所

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