Energy Budget and Fast Rupture on a Near-Excavation Fault: Implications for Mitigating Induced Seismicity

doi:10.1029/2020JB019360

	Energy Budget and Fast Rupture on a Near-Excavation Fault: Implications for Mitigating Induced Seismicity
	Yang, Jianping 2,3; Yang, Diansen 2,3; Zhang, Xi 3,6; Jeffrey, Robert G.1; Chen, Weizhong 3,5; Sheng, Qian 2,3; Zhang, Fengshou 4
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
	2020-10-01
卷号	125 期号:10 页码:23
ISSN号	2169-9313
DOI	10.1029/2020JB019360
英文摘要	Reducing seismicity during excavation is a challenge faced by mining and the associated slip development on a near-excavation fault under deep-mining stress conditions is considered as an analog for understanding earthquake initiation mechanisms. In this paper, the quasi-static slipping on a dipping fault near a horizontal tunnel was numerically studied by incrementally increasing horizontal stress. The equilibrium of the fault, which obeys a slip-weakening friction law, is formulated by a boundary integral approach. The calculated rupture size is a function of the dimensionless factors derived by scaling from geometrical, loading, and friction conditions. The results show that the rupture becomes runaway at a critical stress level and prior to this, the slip zone either extends continuously and aseismically or experiences finite rapid extensions. Energy dissipated in friction in the presence of tunnel-induced stress heterogeneity can arrest fast rupture events resulting in regained equilibrium. The energy radiated from arrested events, using an energy budget analysis, depends on the resulting fault strength change, the rupture arrest length, and the strain energy change during the event. These preceding energy radiations can mitigate the magnitude of runaway events. As the critical slip-weakening distance decreases, the critical stresses for nucleation of both runaway and arrested events are reduced, but the energy radiated by arrested events does not always decrease because the rupture arrest length varies. The results of this study may help identify the initiation mechanisms for runaway ruptures and assess the seismic potential of a rock mass during excavation.
资助项目	National Natural Science Foundation of China[U1765108] ; National Natural Science Foundation of China[U1806226] ; Chinese Fundamental Research (973) Program[2015CB057906] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Open Research Fund by the State Key Laboratory of Geomechanics and Geotechnical Engineering[Z018003]
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000604458900028
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25530]
专题	中科院武汉岩土力学所
通讯作者	Yang, Jianping; Zhang, Xi
作者单位	1.SCT Operat Pty Ltd, Wollongong, NSW, Australia 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Peoples R China 4.Tongji Univ, Dept Geotech Engn, Shanghai, Peoples R China 5.Shandong Univ, Res Ctr Geotech & Struct Engn, Jinan, Peoples R China 6.CSIRO Energy, Melbourne, Vic, Australia
推荐引用方式 GB/T 7714	Yang, Jianping,Yang, Diansen,Zhang, Xi,et al. Energy Budget and Fast Rupture on a Near-Excavation Fault: Implications for Mitigating Induced Seismicity[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2020,125(10):23.
APA	Yang, Jianping.,Yang, Diansen.,Zhang, Xi.,Jeffrey, Robert G..,Chen, Weizhong.,...&Zhang, Fengshou.(2020).Energy Budget and Fast Rupture on a Near-Excavation Fault: Implications for Mitigating Induced Seismicity.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,125(10),23.
MLA	Yang, Jianping,et al."Energy Budget and Fast Rupture on a Near-Excavation Fault: Implications for Mitigating Induced Seismicity".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 125.10(2020):23.