Results 81 to 90 of about 74,393 (284)

The damage and failure mechanism of prestatically loaded rock during medium‐strain rate cyclic impact loading

Deep Underground Science and Engineering, EarlyView.
Based on experimental results and theoretical analysis, an established rock damage accumulation model that comprehensively considers the preapplied static load, impact peak value, impact frequency, and impact times. Abstract To study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series ...
Wei Wang, Hanpeng Wang, Zicheng Wang, Xinyuan Xie, Yunhao Wu, Jinhou Zhang, Dekang Sun   +6 more
wiley   +1 more source

Experimental Investigation of Flow Domain Division in Beds Packed with Different Sized Particles

Energies, 2017
Seepage in a medium packed with particles of variable granular size can be seen in many fields of engineering applications. Due to the relative complex spatial aspect of pore geometry, there are notable differences in the critical parameters of flow ...
Xin Yang, Tianhong Yang, Zenghe Xu, Bin Yang   +3 more
doaj   +1 more source

Properties of Foreshocks and Aftershocks of the Non-Conservative SOC Olami-Feder-Christensen Model: Triggered or Critical Earthquakes? [PDF]

, 2003
Following Hergarten and Neugebauer [2002] who discovered aftershock and foreshock sequences in the Olami-Feder-Christensen (OFC) discrete block-spring earthquake model, we investigate to what degree the simple toppling mechanism of this model is ...
A. Helmstetter, A. Helmstetter, A. Helmstetter, A. Helmstetter, B. C. Papazachos, B. Gutenberg, C. G. Bufe, D. D. Bowman, D. Marsan, D. Sornette, D. von Seggern, F. Omori, G. Zöller, G. Zöller, G. Zöller, H. J. Jensen, K. R. Felzer, L. M. Jones, P. Bak, R. Burridge, T. Utsu, Y. Y. Kagan, Y. Y. Kagan, Y. Y. Kagan   +23 more
core   +4 more sources

Exploring wave propagation behaviors in rock: A grain‐based perspective on mineral structures

Deep Underground Science and Engineering, EarlyView.
This study investigates wave propagation in rock at the grain scale using a grain‐based model, revealing that mineral elastic modulus significantly influences wave attenuation while grain size and distribution have limited effects. A novel peak particle velocity attenuation prediction model is proposed and validated for grain‐scale wave propagation ...
Zhiyi Liao, Jiachen Xu, Kai Zhang, Changtai Zhou   +3 more
wiley   +1 more source

The fluctuations, under time reversal, of the natural time and the entropy distinguish similar looking electric signals of different dynamics

, 2009
We show that the scale dependence of the fluctuations of the natural time itself under time reversal provides a useful tool for the discrimination of seismic electric signals (critical dynamics) from noises emitted from man made sources as well as for ...
Lazaridou, M. S., Sarlis, N. V., Skordas, E. S., Varotsos, P. A.   +3 more
core   +1 more source

Stress buildup in the Himalaya [PDF]

, 2004
The seismic cycle on a major fault involves long periods of elastic strain and stress accumulation, driven by aseismic ductile deformation at depth, ultimately released by sudden fault slip events. Coseismic slip distributions are generally heterogeneous
Avouac, J. P., Bollinger, L., Cattin, R., Pandey, M. R.   +3 more
core   +1 more source

An optimizing microseismic method for rock burst early warning based on mining production process

Deep Underground Science and Engineering, EarlyView.
A classification early warning method of rock burst based on hourly microseismic data is proposed, which can be combined with the on‐site production process to provide more timely warning. Abstract Microseismic (MS) events have been reported in nearly every coal mining country, which could well lead to rock burst in underground coal mines.
Zepeng Han, Linming Dou, Wu Cai, Mingbo Chi, Guojun Xi, Shuai Chen, Biao Jiao   +6 more
wiley   +1 more source

Autonomous decision-making against induced seismicity in deep fluid injections

, 2018
The rise in the frequency of anthropogenic earthquakes due to deep fluid injections is posing serious economic, societal, and legal challenges to geo-energy and waste-disposal projects.
A Mignan, A Mignan, A Mignan, A Mignan, A Mignan, A Tversky, C Dinske, D Giardini, GM Atkinson, JA White, JJ Bommer, K Bosman, K Thienen-Visser van, M Broccardo, M Peters, NJ Elst van der, RM Dawes, S Baisch, S Hirschberg, S Lagomarsino, SN Jonkman, WL Ellsworth   +21 more
core   +1 more source

Semi‐analytical solution for the stability of deep vertical shaft considering time‐dependent rock‐structure interaction

Deep Underground Science and Engineering, EarlyView.
A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen, Pinqiang Mo, Zhao Lu, Lianfei Kuang, Qiang Zhang, Abolfazl Eslami   +5 more
wiley   +1 more source

Characterization of Spatial Variability in Rock Mass Mechanical Parameters for Slope Stability Assessment: A Comprehensive Case Study

Applied Sciences
The spatial variability in rock mass mechanical parameters critically affects slope stability assessments. This study investigated the southern slope of the Bayan Obo open-pit mine.
Xin Dong, Tianhong Yang, Yuan Gao, Feiyue Liu, Zirui Zhang, Peng Niu, Yang Liu, Yong Zhao   +7 more
doaj   +1 more source