Results 71 to 80 of about 14,285 (229)

Influence of end effect on rock strength in true triaxial compression test [PDF]

Canadian Geotechnical Journal, 2017
The influence of the end effect on rock strength in true triaxial compression testing was studied using a numerical approach. The influence of the intermediate principal stress (σ2) on rock strength was isolated by using the two-dimensional Mohr–Coulomb failure criterion that depends only on the major principal stress (σ1) and minor principal stress ...
Xu, Yuhang, Cai, Ming, Zhang, Xiwei, Feng, Xia-Ting   +3 more
openaire   +1 more source

Effect of confining pressure on fracture characteristics and mineralogical behavior of tight sandstone specimens after hydraulic fracturing

Deep Underground Science and Engineering, EarlyView.
Hydraulic fracturing in tight sandstone and fracture propagation characteristics using backscattered electron‐scanning electron microscope (BSE‐SEM) images. Abstract This study focuses on hydraulic fracturing experiments conducted under triaxial conditions on tight sandstone specimens from Shivpuri district, Madhya Pradesh, India.
Pankaj Rawat, Narendra Kumar Samadhiya
wiley   +1 more source

A multifunctional shear apparatus for rocks subjected to true triaxial stress and high temperature in real-time

Journal of Rock Mechanics and Geotechnical Engineering
Deep engineering disasters, such as rockbursts and collapses, are more related to the shear slip of rock joints. A novel multifunctional device was developed to study the shear failure mechanism in rocks. Using this device, the complete shear–deformation
Jun Zhao, Xia-Ting Feng, Jia-Rong Wang, Liang Hu, Yue Guo   +4 more
doaj   +1 more source

Relativistic Nuclear Energy Density Functionals: Mean-Field and Beyond

, 2011
Relativistic energy density functionals (EDF) have become a standard tool for nuclear structure calculations, providing a complete and accurate, global description of nuclear ground states and collective excitations.
Akmal, Anguiano, Audi, Baran, Baranger, Baranger, Bemis, Bender, Bender, Bender, Bender, Bender, Bender, Bender, Bender, Berger, Berger, Bjørnholm, Bonche, Bürvenich, Clément, C̀wiok, D. Vretenar, de Jong, Delaroche, Delaroche, Dobaczewski, Dreizler, Drut, Duguet, Ekström, Entem, Epelbaum, Finelli, Finelli, Finelli, Finelli, Firestone, Friar, Fritsch, Fuchs, Furnstahl, Furnstahl, Ginocchio, Giraud, Girod, Goeke, Goriely, Hoch, Hofmann, Hohenberg, Iachello, Iachello, Inglis, Klüpfel, Kohn, Kohn, Kortelainen, Kumar, Lacroix, Lalazissis, Lalazissis, Li, Li, Li, Li, Libert, Litvinova, Litvinova, Litvinova, Litvinova, Litvinova, Long, Long, Long, Löbner, Madland, Meng, Nikšić, Nikšić, Nikšić, Nikšić, Nikšić, Nikšić, Nikšić, Nikšić, P. Ring, Paar, Peierls, Perdew, Plohl, Plohl, Próchniak, Próchniak, Próchniak, Raman, Reinhard, Ring, Ring, Robledo, Rodríguez, Rodríguez, Rodríguez, Rodríguez-Guzmán, Rodríguez-Guzmán, Rodríguez-Guzmán, Rodríguez-Guzmán, Rusnak, Serot, Serot, Serra, Staszcak, T. Nikšić, Thouless, Tian, Tian, Tian, Todd-Rutel, Typel, Valor, Vretenar, Vretenar, Vretenar, Yao, Yao   +124 more
core   +1 more source

Failure characteristics and the energy criterion of rock with a through‐going joint under true‐triaxial unloading conditions: Insights from the DEM model

Deep Underground Science and Engineering, EarlyView.
The rock failure mode is significantly influenced by the contributing factors, such as the joint inclination, the initial confining pressure, and the unloading point. We found six typical rock failure modes after a large number of numerical tests. Abstract Excavation unloading damages rock masses, with preferential failure along geological defects in ...
Fei Liu, Changhui Liang, Sijia Liu, Yongjun Zhang, Luo Wang   +4 more
wiley   +1 more source

Temperature induced pore fluid pressurization in geomaterials [PDF]

, 2010
The theoretical basis of the thermal response of the fluid-saturated porous materials in undrained condition is presented. It has been demonstrated that the thermal pressurization phenomenon is controlled by the discrepancy between the thermal expansion ...
Ghabezloo, Siavash, Sulem, Jean
core   +3 more sources

A review on rockburst prediction and prevention to shape an ontology‐based framework for better decision‐making for underground excavations

Deep Underground Science and Engineering, EarlyView.
A scientometric analysis of 2449 journal articles and a comprehensive review of 336 papers were conducted, discussing and identifying challenges and research gaps in rockburst prediction and prevention and proposing an ontology‐based framework for better decision‐making in underground excavations. Abstract With underground engineering projects becoming
Hongchuan Yan, Haijiang Li, Hongqiang Xie, Mingli Xiao, Jianliang Pei, Huaizhong Liu, Jiangda He   +6 more
wiley   +1 more source

Streaming potential measurements 2. Relationship between electrical and hydraulic flow patterns from rock samples during deformation [PDF]

, 1999
Streaming potential and resistivity measurements have been performed on Fontainebleau sandstone and Villejust quartzite samples in a triaxial device during compaction, uniaxial compression, and rupture.
Benoit Lorne, Bernabé, Bernabé, Bernabé, Bernard, Bikerman, Brown, Brown, David, David, Davis, Duplessis, Frédéric Perrier, Glover, Glover, Glover, Glover, Herrick, Ishido, Jean-Philippe Avouac, Jouniaux, Jouniaux, Jouniaux, Jouniaux, Knackstedt, Lockner, Lorne, Mattisson, Mizutani, Morgan, Ogilvy, Overbeek, Perrier, Pride, Pride, Revil, Revil, Ruffet, Scheidegger, Trique, Tsunogai, Walsch, Zhang   +42 more
core   +3 more sources

Generalized Matsuoka–Nakai criterion considering hydrostatic pressure dependence in the brittle–ductile region

Deep Underground Science and Engineering, EarlyView.
Three sets of strength data were selected, including hydrostatic pressure independent within the brittle region (HPI‐B), hydrostatic pressure dependent within the brittle region (HPD‐B), and hydrostatic pressure dependent within the brittle–ductile region (HPD‐BD). For HPI type, the failure envelope within the deviatoric plane remains constant.
Jiacun Liu, Junjie Xiao, Dongping Liu, Ying Xu   +3 more
wiley   +1 more source

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

Deep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie   +5 more
wiley   +1 more source