Results 21 to 30 of about 255,885 (342)

Rupture by damage accumulation in rocks [PDF]

, 2006
The deformation of rocks is associated with microcracks nucleation and propagation, i.e. damage. The accumulation of damage and its spatial localization lead to the creation of a macroscale discontinuity, so-called "fault" in geological terms, and to the
A Buchel, A Guarino, A Johansen, A Lin, AM Boullier, B Gutenberg, B Menendez, B Velde, C Marone, C Nicholson, C Scavia, CA Tang, CA Tang, CAJ Wibberley, CG Bufe, CG Sammis, CH Scholz, CH Scholz, D Amitrano, D Place, D Sornette, DA Lockner, DA Lockner, DA Lockner, David Amitrano, DE Moore, E Bouchaud, E Bouchaud, EM Schulson, F Kun, GCP King, H Nechad, HL Li, IG Main, J Biarez, J Kemeny, J Mori, J Rice, J Schmittbuhl, J Schmittbuhl, J Weiss, J Weiss, JC Jaeger, JVA Keller, JW Rudnicki, K Chen, K Mair, K Michibayashi, K Mogi, LS Costin, M Gerstenberger, P Cowie, P Grassberger, RL Kranz, RP Young, S Zapperi, S Zapperi, SC Jaume, SJD Cox, SR Brown, T Hirata, W Wang, YC Wang, Z Olami, Z Reches   +64 more
core   +4 more sources

Laboratory studies of a high-strength roof bolting by means of self-extending mixtures [PDF]

, 2019
Purpose is to analyze parameters of a new method to fasten roof bolts with the help of nonadhesive mixtures extending while hardening along with the development of high expansion pressures. Methods.
Isaienkov, O, Kurdiumow, D, Sakhno, I, Sakhno, S   +3 more
core   +1 more source

Acoustic fluidization and the extraordinary mobility of sturzstroms [PDF]

, 2003
with only a comparatively small vertical drop in height. Their extraordinary mobility appears to be a consequence of sustained fluid-like behavior during motion, which persists even for driving stresses well below those normally associated with granular ...
Bagnold, Bagnold, Brune, Campbell, Campbell, Chuang, Dade, Dainty, Erismann, Fineburg, Frankel, Gaffney, Gareth S. Collins, Goguel, H. Jay Melosh, Heim, Howard, Hsü, Iverson, Jaeger, Kanamori, Lucchitta, Lucchitta, Malin, McEwen, McSaveney, Melosh, Melosh, Melosh, Melosh, Melosh, Reynolds, Richards, Rodger, Schenk, Shreve, Zik   +36 more
core   +1 more source

Water saturation induced changer in the indirect (Brazilian) tensile strength and the failure mode of some igneous rock materials [PDF]

, 2020
The present study concentrates on water induced strength reduction and variation of the failure mode in indirect (Brazilian) tension tests of several igneous rock materials under three moisture cases of oven-dry, air-dry and fully saturated states.
Komurlu, Eren, Yasar, Serdar
core  

Evaluation Method of Granite Multiscale Mechanical Properties Based on Nanoindentation Technology

Geofluids, 2021
In order to study the mechanical properties of granite at the micro- and nanoscale, the load-displacement curve, residual indentation information, and component information of the quartz, feldspar, and mica in granite were obtained using a ...
Man Lei, Fa-ning Dang, Haibin Xue, Mingming He   +3 more
doaj   +1 more source

Root distribution in willow brush mattresses: Experimental framework and preliminary findings [PDF]

E3S Web of Conferences
Willow brush mattresses are widely used for riverbank stabilization, but research on root distribu- tion in soils of varying conditions remains limited following their establishment.
Li Shanshan, Reith Holger, Bieberstein Andreas, Schlüter Volker, Stutz Hans Henning   +4 more
doaj   +1 more source

Research on Rock Strength Test Based on Electro-Hydraulic Servo Point Load Instrument

Applied Sciences, 2022
A new electro-hydraulic servo point load instrument was designed to address the problem that the existing point load instrument cannot be loaded continuously and uniformly; different loading rates (using three loading rates: 0.1, 0.5, 1.0 kN/s) were ...
Xiaoxia Zhou, Lei Qiao, Faquan Wu, Zhaoyuan Wang, Yinhong Chen, Jie Wu   +5 more
doaj   +1 more source

Fracture of disordered solids in compression as a critical phenomenon: I. Statistical mechanics formalism [PDF]

, 2002
This is the first of a series of three articles that treats fracture localization as a critical phenomenon. This first article establishes a statistical mechanics based on ensemble averages when fluctuations through time play no role in defining the ...
A. A. Griffith, A. Hansen, A. Hansen, C. Shannon, D. Sornette, G. G. Batrouni, H. J. Herrmann, J. B. Rundle, J. V. Andersen, J. W. Rudnicki, L. de Arcangelis, L. de Arcangelis, L. Golubovič, M. Kloster, M. Sahimi, M. Sahimi, M. Sahimi, P. C. Hemmer, P. M. Duxbury, R. L. Blumberg Selinger, Renaud Toussaint, S. Arbabi, S. D. Zhang, S. R. Pride, S. Zapperi, S. Zapperi, Steven R. Pride, Y. Moreno, Y. Moreno, Z. G. Wang   +29 more
core   +5 more sources

Results of the experimental research of the heat-transfer jet pressure to the rock surface during thermal reaming of the borehole [PDF]

, 2018
The performed analysis of scientific sources confirms the existence of a small number of publications devoted to the experimental research of the gasdynamics and plasmodynamics of jets used as a heat- transfer medium in the thermal ...
Potapchuk, Iryna, Voloshyn, Oleksii, Zhevzhyk, Oleksandr, Zhovtonoha, Mykola   +3 more
core   +1 more source

Application and prospects of 3D printing in physical experiments of rock mass mechanics and engineering: materials, methodologies and models

International Journal of Coal Science & Technology, 2023
The existence of joints or other kinds of discontinuities has a dramatic effect on the stability of rock excavations and engineering. As a result, a great challenge in rock mass mechanics testing is to prepare rock or rock-like samples with defects.
Qingjia Niu, Lishuai Jiang, Chunang Li, Yang Zhao, Qingbiao Wang, Anying Yuan   +5 more
doaj   +1 more source