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| 1 | Failure mechanism and coupled static-dynamic loading theory in deep hard rock mining: A review显示文摘Rock failure phenomena,such as rockburst,slabbing(or spalling) and zonal disintegration,related to deep underground excavation of hard rocks are frequently reported and pose a great threat to deep mining.Currently,the explanation for these failure phenomena using existing dynamic or static rock mechanics theory is not straightforward.In this study,new theory and testing method for deep underground rock mass under coupled static-dynamic loading are introduced.Two types of coupled loading modes,i.e.'critical static stress + slight disturbance' and 'elastic static stress + impact disturbance',are proposed,and associated test devices are developed.Rockburst phenomena of hard rocks under coupled static-dynamic loading are successfully reproduced in the laboratory,and the rockburst mechanism and related criteria are demonstrated.The results of true triaxial unloading compression tests on granite and red sandstone indicate that the unloading can induce slabbing when the confining pressure exceeds a certain threshold,and the slabbing failure strength is lower than the shear failure strength according to the conventional Mohr-Column criterion.Numerical results indicate that the rock unloading failure response under different in situ stresses and unloading rates can be characterized by an equivalent strain energy density.In addition,we present a new microseismic source location method without premeasuring the sound wave velocity in rock mass,which can efficiently and accurately locate the rock failure in hard rock mines.Also,a new idea for deep hard rock mining using a non-explosive continuous mining method is briefly introduced. | Xibing Li Fengqiang Gong Ming Tao Longjun Dong Kun Du Chunde Ma Zilong Zhou Tubing Yin | 2017 | Journal of Rock Mechanics and Geotechnical Engineering2017,9,4: | 68 |
| 2 | Innovative testing technique of rock subjected to coupled static and dynamic loads显示文摘 | Xibing Li Zilong Zhou Tat-Seng Lok Liang Hong Tubing Yin | 2007 | International Journal of Rock Mechanics and Mining Sciences2007,,5: | 5 |
| 3 | A waveform modification method for testing dynamic properties of rock under high temperature显示文摘In this study,a waveform modification method was proposed using a self-designed heating device combined with the split Hopkinson pressure bar(SHPB)technique for determination of dynamic behaviors of rock at high temperature.Firstly,the temperature gradient distribution on the incident bar was measured according to the variation of elastic modulus of the bar with temperature,and the relationship between the longitudinal wave velocity and temperature of the bar was obtained based on onedimensional stress wave theory.The incident bar with a temperature gradient was divided into a series of microelements,and then the transmission coefficient of the whole incident bar was obtained.Finally,the stress wave was modified by the transmission coefficient from 25℃ to 600℃.This method was used to study the dynamic properties of rock at high temperature,which not only preserves a classical SHPB device,but also effectively ensures the accuracy of the experimental results.A dynamic Brazilian disc experiment was carried out to explore the influences of loading rate and temperature on dynamic tensile strength of sandstone at high temperature using the proposed waveform modification method. | Tubing Yin Chao Wang You Wu Bingqiang Wu | 2021 | Journal of Rock Mechanics and Geotechnical Engineering2021,13,4: | 2 |
| 4 | Implementation of the ALERT algorithm, a new dispatcher -assisted telephone cardiopulmo- nary resuscitation protocol, in non - Advanced Medical Priority Dispatch System (AMPDS) Emergency Medical Services centres 显示文摘 | Stipulante S Tubes R E1 Fassi M | 2014 | Resuscitation2014,85,2: | 1 |
| 5 | 显示文摘 | Read S M Clarke A E Bacic A et aL Requirements for division of generative nucleus in cultured pollen tubes of Nicotiana | 1993 | Protoplasma1993,174,: | 1 |
| 6 | The role of proteases in individual and collective cancer cell invasion显示文摘 | Peter F Katarina W Tube T | 2008 | Cancer Res2008,68,18: | 1 |
| 7 | Clinical management guidelines for obstetrician- gynecologists 显示文摘 | Neural Tube DesectS ACOD Bulletin | 2002 | Obstet Gynecol2002,102,: | 1 |
| 8 | Recurrent personality factors based on trait ratings (ASD -TR -61 -97) 显示文摘 | Tubes E C Christal R E | 1961 | Journal of Personality1961,60,: | 1 |
| 9 | 5%mg/kg intravenous lignocainc on coughing and hemodynamics during extubation in neurosurgical patients:a randomized controlled double-blind trial 显示文摘 | Venkatesan T Komla GA comparative study between the effect of 4% endotracheal tube cuff lignocaine and 1 | 2006 | Neurosurg Anesthesiol2006,18,4: | 1 |
| 10 | Axial capacity of circular con columns 显示文摘 | Giakoumelis G crete-filled tube al Steel Researc Lain D | 2004 | Journal of Construction h2004,60,7: | 1 |
| 11 | Manual small incision cataract surgery for theclinical effect of old age显示文摘 | Tube YN Becky | 2011 | China Medical Herald2011,12,8: | 1 |
| 12 | Visualization of water buildup in the cathode of a transparent PEM fuel cell 显示文摘 | Klaus Tubes | 2003 | Journal of Power Sources2003,124,2: | 1 |
| 13 | A randomized, double-blind, eontrolled withdrawal trial in Crobn' s disease patients in long-term remission on azathioprine 显示文摘 | Lrmann M Mary JY Colombel JF Groupe D' Etude Thrrapeutique des Affections Inflammatoires du Tube Digestif | 2005 | Gastroenterology2005,128,7: | 1 |
| 14 | Control of receptor-induced signaling complex formation by the kinetics of ligand / receptor interaction 显示文摘 | Krippner-Heidenreich A TUbing F Bryde S et ol | 2002 | J Biol Chem2002,277,44: | 1 |
| 15 | Infliximab plus azathioprine for steroid-dependent Crohn' s disease patients: a randomized placebo-controlled trial 显示文摘 | L6mann M Mary JY Duelos B Grouped' Etude Therapeutique des Affections Inflammatoires du Tube Digestif (GETAID) | 2006 | Gastroenterology2006,130,4: | 1 |
| 16 | Landscape supplementation in adjacent savannas and its implications for the design of corridors for forest birds in central Cerrado, Brazil显示文摘 | Tubelis D P Cowling A Donnelly C | 2004 | Biological Conservation2004,118,: | 1 |
| 17 | Identification, characterization,and regulation of the canonical Wnt signaling pathway in human endometrium显示文摘 | Tube S Nayak NR Kao LC | 2003 | J Clin Endocrinol M etab2003,88,8: | 1 |
| 18 | I:Static Analysis显示文摘 | Hisao Mukai and Tadato Hirano Doubly Symmetric Tube Structures | 1993 | Journal of Structural Engineering1993,119,7: | 1 |
| 19 | Comprehensive Control on Microstructures and Properties of Medium Carbon V-N Microalloyed Steel Seamless Oil-Well Tubes of Hot-Rolling Non-Quenched/Tempered显示文摘The relationship between microstructures and mechanical properties of a medium carbon V-N microalloyed steel used for N80 seamless oil-well tubes of hot rolling non-quenched/tempered (non-Q and T) was investigated.The results have shown that volume percentages of upper bainite,modified bainite and ferrite have a decisive influence on impact energies of steel tubes.When the total volume percentage of bainite is larger than 5%,the impact energy of tubes can not satisfy with the industrial criteria.Moreover,if the total volume percentage of bainite is smaller than 5%,then the impact energy of steel tubes enhances with volume percentage of ferrite increasing.The final microstructures have closely relation with tube billet quality,controlled cooling temperature after tube rolling and cooling method after stretch-reduction-diameter.High quality of medium carbon V-N microalloyed steel for non-Q and T oil-well tubes can be produced through comprehensive control of microstructures and mechanical properties in sub-procedures,especially for tube billet quality and controlled cooling parameters. | LIU Sheng-xin 1,2,LIU Guo-quan 2,CHEN Yong 1,ZHANG Yong-gang 3,HUANG Jian-kai 3 (1.School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450002,Hennan China 2.School of Materials Science and Engineering,University of Science and Technology Beijing,100083,China 3.Wuxi Seamless Steel Tube Company Ltd,Wuxi 214026,Jiangsu China) | 2011 | Journal of Iron and Steel Research(International)2011,18,S1: | 1 |
| 20 | MRC vitamin study research group 显示文摘 | Anonymous prevention of neural tube defects: results from the medical research council vitamin study | 1991 | Lancet1991,338,: | 1 |