Mechanism on Progressive Failure of a Faulted Rock Slope Due to Slip-Weakening

doi:10.1360/04zze5

IMECH-IR > 力学所知识产出(1956-2008)

	Mechanism on Progressive Failure of a Faulted Rock Slope Due to Slip-Weakening
	Zhang JF(张均锋); Xu YJ(徐永君); Qi T; Li ZG; Zhang, JF (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China.
发表期刊	Science in China Series E-Engineering & Materials Science
	2005
卷号	48 期号:supp.页码:18-26
ISSN	1006-9321
摘要	Slip-weakening is one of the characteristics of geological materials under certain loadings. Non-uniform rock structure may exist in the vicinity of the slip surface for a rock slope. Some portion of the slip surface may be penetrated but the other not. For the latter case, the crack or the fault surface will undergo shear deformation before it becomes a successive surface under a certain loading. As the slipped portion advances,slip-weakening occurs over a distance behind the crack tip. In the weakening zone, the shear strength will decrease from its peak value to residual friction level. The stress will redistribute along the surface of crack and in the weakening zone. Thus the changed local stress concentration leads the crack to extend and the ratio of penetration of the slip surface to increase. From the view of large-scale for the whole slip surface, the shear strength will decrease due to the damage of interior rock structure, and the faulted rock behaves as a softening material. Such a kind of mechanism performs in a large number of practical landslides in the zones experienced strong earthquakes. It should be noted that the mechanism mentioned above is different from that of the breakage of structural clay,in which the geological material is regarded as a medium containing structural lumps and structural bands. In this paper, the softening behavior of a faulted rock should be regarded as a comprehensive result of the whole complicated process including slip-weakening, redistribution of stress, extension of crack tip, and the penetration of the slip surface. This process is accompanied by progressive failure and abrupt structural damage. The size of slip-weakening zone is related to the undergoing strain. Once the relative slide is initiated (local or integrated), the effect of slip-weakening will behave in a certain length behind the crack tip until the formation of the whole slip surface.
学科领域	力学
DOI	10.1360/04zze5
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000234924800002
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Multidisciplinary ; Materials Science, Multidisciplinary
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/16437
专题	力学所知识产出(1956-2008)
通讯作者	Zhang, JF (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Zhang JF,Xu YJ,Qi T,et al. Mechanism on Progressive Failure of a Faulted Rock Slope Due to Slip-Weakening[J]. Science in China Series E-Engineering & Materials Science,2005,48,supp.,:18-26.
APA	张均锋,徐永君,Qi T,Li ZG,&Zhang, JF .(2005).Mechanism on Progressive Failure of a Faulted Rock Slope Due to Slip-Weakening.Science in China Series E-Engineering & Materials Science,48(supp.),18-26.
MLA	张均锋,et al."Mechanism on Progressive Failure of a Faulted Rock Slope Due to Slip-Weakening".Science in China Series E-Engineering & Materials Science 48.supp.(2005):18-26.

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