Qiang Sun
Ontario Ministry of Natural Resources
IrradiationLateral strainGeologyCritical point (thermodynamics)Deformation (engineering)Phase transitionOil shaleComposite materialThermal conductionGeochemistryGeotechnical engineeringMaterials scienceMyloniteMineralogyShape parameterThermalOverburden pressureStandard deviationGeometryMetamorphic rockDecrepitationQuartzRock failureUniaxial compressionStress levelCompressive strengthEnvironmental scienceRock mass classificationIgneous rockMicrowaveCompression (geology)CrystalFracture mechanicsRenormalization groupElectrical resistivity and conductivityGeological Strength IndexCrack closureGabbroBendingMicrostructureStress (mechanics)Fracture toughness
Publications 6
#1Zhenlong GeH-Index: 1
#2Qiang SunH-Index: 4
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#1Tian YangH-Index: 1
#2Qiang SunH-Index: 4
Last. Zhenlong GeH-Index: 1
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Abstract Microwave assisted mechanical rock breaking is a hybrid rock breaking method that combines microwave heating and mechanical rock breaking technologies and is proven to have potential applications in mineral processing, mining, and geotechnical engineering. It is, thus, important to understand the effect of microwave-induced damage on rock fracture characteristics. In this study, granite specimens of the Cracked Straight Through Brazilian Disc (CSTBD) were used to carry out the mode I fr...
#1Qiang Sun (CAS: Chinese Academy of Sciences)H-Index: 4
#1Qiang Sun (CAS: Chinese Academy of Sciences)H-Index: 22
Last. Lei Xue (CAS: Chinese Academy of Sciences)H-Index: 9
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This paper reports the relationship between electrical resistivity and rock failure during uniaxial compression. Experiments of rock samples on an electro-hydraulic servo-controlled testing machine show that the variation of electrical resistivity is closely related to rock deformation. Near to rock fracture, microcracks appear and change the microstructure of rock mass, causing the rupture of mineral crystal lattice, and the electrical resistivity has a rapid variation with the growth of cracks...
8 CitationsSource
#1Lei Xue (CAS: Chinese Academy of Sciences)H-Index: 9
#2Siqing Qin (CAS: Chinese Academy of Sciences)H-Index: 13
Last. Haitao Qian (CEA: China Earthquake Administration)H-Index: 1
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Abstract It was found that the crack damage stress threshold, σ cd , is a phase transition point during the deformation process of rock and is equivalent to the unstable fixed point of renormalization group theory. Thus, a relationship exists between the renormalization group theory and the rock deformation process, through which we can investigate the critical behavior of rock deformation. Therefore, an improved renormalization group model, which takes into account the different stress transfer...
15 CitationsSource
#1Lei Xue (CAS: Chinese Academy of Sciences)H-Index: 9
#2Siqing Qin (CAS: Chinese Academy of Sciences)H-Index: 13
Last. Wei Chao LiH-Index: 7
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When rock samples are loaded until macroscopic fractures develop, the failure process can be divided into several stages based on axial and lateral strain responses or the acoustic emission sequence during uniaxial compression tests. Several stress thresholds may be identified: the crack closure stress σ cc, crack initiation stress σ ci, crack damage stress σ cd, and uniaxial compressive strength σ ucs; these may be used as a warning indicator for rock rupture. We investigated the crack damage s...
86 CitationsSource