气候变化领域集成服务门户(CCPortal): Laboratory Study on Fluid-Induced Fault Slip Behavior: The Role of Fluid Pressurization Rate

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DOI	10.1029/2019GL086627
	Laboratory Study on Fluid-Induced Fault Slip Behavior: The Role of Fluid Pressurization Rate
	Wang L.; Kwiatek G.; Rybacki E.; Bonnelye A.; Bohnhoff M.; Dresen G.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:6
英文摘要	Understanding the physical mechanisms governing fluid-induced fault slip is important for improved mitigation of seismic risks associated with large-scale fluid injection. We conducted fluid-induced fault slip experiments in the laboratory on critically stressed saw-cut sandstone samples with high permeability using different fluid pressurization rates. Our experimental results demonstrate that fault slip behavior is governed by fluid pressurization rate rather than injection pressure. Slow stick-slip episodes (peak slip velocity < 4 μm/s) are induced by fast fluid injection rate, whereas fault creep with slip velocity < 0.4 μm/s mainly occurs in response to slow fluid injection rate. Fluid-induced fault slip may remain mechanically stable for loading stiffness larger than fault stiffness. Independent of fault slip mode, we observed dynamic frictional weakening of the artificial fault at elevated pore pressure. Our observations highlight that varying fluid injection rates may assist in reducing potential seismic hazards of field-scale fluid injection projects. © 2020. The Authors.
英文关键词	Creep; Induced Seismicity; Pressurization; Slip forming; Stick-slip; Stiffness; Structural geology; Fault creep; Fluid injections; Fluid pressurization; Injection pressures; Laboratory studies; Mechanically stable; Peak slip velocity; Physical mechanism; Fault slips; creep; fault; fault slip; fluid injection; laboratory method; loading; permeability; sandstone; seismic hazard; stick-slip
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170579
作者单位	Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Potsdam, Germany; Department of Earth Sciences, Free University Berlin, Berlin, Germany; Institute of Earth and Environmental Science, University of Potsdam, Potsdam, Germany
推荐引用方式 GB/T 7714	Wang L.,Kwiatek G.,Rybacki E.,et al. Laboratory Study on Fluid-Induced Fault Slip Behavior: The Role of Fluid Pressurization Rate[J],2020,47(6).
APA	Wang L.,Kwiatek G.,Rybacki E.,Bonnelye A.,Bohnhoff M.,&Dresen G..(2020).Laboratory Study on Fluid-Induced Fault Slip Behavior: The Role of Fluid Pressurization Rate.Geophysical Research Letters,47(6).
MLA	Wang L.,et al."Laboratory Study on Fluid-Induced Fault Slip Behavior: The Role of Fluid Pressurization Rate".Geophysical Research Letters 47.6(2020).