Article
Construction & Building Technology
Fuqiang Gao, Hongpu Kang, Jianzhong Li
Summary: Numerical modeling of fault-slip rockbursts presents a significant challenge, but a sophisticated numerical method based on the distinct element method has been proposed to successfully simulate the generation and effects of seismic events. This method offers valuable insights into the source mechanism of rockbursts and the control of accompanying damage.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2021)
Article
Computer Science, Interdisciplinary Applications
Yijin Zeng, Qinghua Lei, Zineng Wang, Shidong Ding, Kui Liu, Xin Huang, Zhaoqin Huang, Xiaoguang Wang
Summary: This study examines the impact of reservoir heterogeneity on fault slip in shale reservoirs subjected to hydraulic stimulation through a numerical model simulating coupled hydro-mechanical processes. The research findings indicate the significant role of reservoir heterogeneity in fault reactivation when the hydraulic fracture is away from the fault but at a distance smaller than the correlation length.
COMPUTERS AND GEOTECHNICS
(2021)
Article
Engineering, Geological
Yuzong Li, Guoshao Su, Jianyong Pang, Caihua Liu, Qinghe Zhang, Xiaofeng Yang
Summary: This study summarized the core features of structural-slip rockbursts in civil tunnels and revealed two generation modes through laboratory experiments. It also discussed the effect of normal stress on rockburst intensity and analyzed the characteristics of rockburst intensities. The findings from this study may provide valuable insights for understanding the structural-slip mechanism in civil tunnels.
ROCK MECHANICS AND ROCK ENGINEERING
(2021)
Article
Engineering, Geological
Juan Andres Jarufe Troncoso, Sebastian Perez, Juan Pablo Hurtado, Carlos Cifuentes
Summary: This study aims to develop a method to evaluate the probability of maximum seismic events based on the synthetic distribution of seismic data and numerical modelling results.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
P. H. Hennings, J. P. Nicot, R. S. Gao, H. R. DeShon, J. E. Lund Snee, A. P. Morris, M. R. Brudzinski, E. A. Horne, C. Breton
Summary: The study reveals that earthquakes in the Fort Worth Basin were induced by an increase in pore pressure from oilfield wastewater injection, with certain fault slip potential levels. Faults near SWD operations were more likely to become unstable early on, while an increasing number of faults were impacted as the pore pressure spread regionally.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Physics, Multidisciplinary
M. T. Motchongom, R. Kengne, G. B. Tanekou, F. B. Pelap, T. C. Kofane
Summary: This paper investigates the effect of perturbation stress on the train model of Burridge-Knopoff. The study reveals that disturbances of the parameters can considerably impact the duration of the inter-seismic phase, leading to drastic changes in the dynamics of the system.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Computer Science, Information Systems
Xinpeng Diao, Quanshuai Sun, Yan Zhang, Kan Wu, Jing Yang, Xin Lu, Qiuwen Wang, Jing Wang
Summary: This study investigated the spatiotemporal evolution and deformation mechanism of mining subsidence in regions of fault occurrence using InSAR deformation analysis method. The results showed continuous and abnormal deformation in the working face, with a termination position different from the conventional subsidence basin. Different regions within the influence range of mining exhibited different deformation characteristics.
Article
Engineering, Geological
Nao Shen, Lei Wang, Xiaochun Li
Summary: The study showed that induced earthquakes may be linked to fluid injection into the subsurface, reactivating natural faults. Experiments on shear slip behavior under different tectonic boundary conditions revealed that fracture slip is not only related to the applied effective normal stress, but also to the hydraulic diffusivity and pressure heterogeneity, which are influenced by slip velocity in CSS tests.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Longjun Dong, Qiaomu Luo
Summary: This work reviews the experimental study of fault slip and its relation to earthquakes, discussing the physical processes and mechanisms involved. The main influencing factors in the study of fault and earthquake are stress, velocity, material, fluid, and temperature. These studies have the potential to advance the understanding of earthquake mechanisms and guide earthquake prediction and control.
EARTH-SCIENCE REVIEWS
(2022)
Article
Engineering, Geological
Bolun Zhang, Fujian Yang, Dawei Hu, Hui Zhou
Summary: It is widely acknowledged that underground fluid injection activities can induce earthquakes, which greatly affects the exploitation of underlying resources. This study focused on the effects of fault properties on injection-induced fault activation and shear slip behavior using sandstone samples with different levels of roughness. The findings indicate that rough fractures exhibit dilatancy followed by shear slip, while smooth fractures experience simultaneous dilatancy and shear slip. Fractures of all roughness levels experience varying degrees of abrasion failure, but shearing-off failure only occurs on the roughest fractures. The fluid overpressure ratio is influenced by the fluid diffusion rate, which determines the homogeneity of fluid pressure distribution over the fracture. The injection-induced instability exhibits quasi-dynamic sliding and is insignificantly correlated with roughness.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Geochemistry & Geophysics
Ronald M. Weir, David W. Eaton, Thomas S. Eyre, Donald C. Lawton
Summary: Development of resource plays is subject to inherent risks, such as unexpected costs or shutdowns due to induced seismicity, and risks associated with reservoir stimulation that differs from prior models. We propose a novel strategy for pre-operational risk assessment that combines seismic data interpretation, principles of structural geology, and induced seismicity data. A case study from the Duvernay play in Canada illustrates our approach.
Article
Geosciences, Multidisciplinary
Antoine B. Jacquey, Robert C. Viesca
Summary: Microseismicity associated with fluid pressurization in the subsurface can occur during and after fluid injection. The extent and duration of post-injection microseismicity are crucial for managing the risk of fluid-induced seismicity and ensuring safe use of the subsurface. Our theoretical and numerical investigation shows that the mechanisms controlling the arrest of aseismic slip on a fault plane depend on the initial fault stress criticality and the pressurization duration. The absolute arrest time of fault aseismic slip after injection shut-in is proportional to the pressurization duration and increases with higher initial fault stress criticality. These findings provide insights into the mechanics of microseismicity arrest after fluid pressurization and can contribute to mitigation strategies for induced seismicity.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Yinlin Ji, Hannes Hofmann, Kang Duan, Arno Zang
Summary: Induced seismicity from fluid injection into underground formations poses a threat to sustainable utilization of the subsurface. Laboratory experiments have played a crucial role in understanding the fault behavior related to injection-induced seismicity. This review provides an overview of the current understanding of injection-induced seismicity from the laboratory perspective. It covers the basics of fault behavior, laboratory methods, and the effects of various factors on fault behavior, with a focus on implications for injection-induced seismicity. The review highlights the advancements made in understanding the role of fault properties, stress state, fluid physics, and injection protocol in injection-induced seismicity. However, there are still unresolved questions that could be addressed in future experimental studies.
EARTH-SCIENCE REVIEWS
(2022)
Article
Engineering, Geological
Jian Deng
Summary: This paper investigates the mechanism of pillar rockburst under the excitation of triangular stress waves from underground blasting, utilizing both analytical and numerical approaches. It is found that the amplitude and frequency of dynamic disturbances play a critical role in the occurrence of pillar rockburst, with longer time gaps between dynamic component loads helping reduce rockbursts. Additionally, the positive slope of triangular loads has a similar influence as the negative slope on rockburst occurrences.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2021)
Article
Geochemistry & Geophysics
Md Shumon Mia, Mohamed Abdelmeguid, Ahmed E. Elbanna
Summary: This study investigates the role of fault zone strength in modulating the spectrum of fault slip across different spatio-temporal scales. Long-term simulations of seismic and aseismic slip were carried out, revealing the emergence of a new stability boundary that limits the rupture size regardless of the fault length. The results shed new light on the nature of fault frictional stability and emphasize the critical role of the fault zone rheological properties in modulating the spectrum of fault slip.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
