醉染图书断续裂隙岩石材料强度破坏与裂纹演化特9787030448606

1Introduction
1.1Experimental Studies for Rock—Like Materials
1.2Experimental Studies for Real Rock Materials
1.3Numerical Studies for Crack Evolution Behavior
1.4Study of Fracture Coalescence Behavior by AE Technique
1.5Main Contents in This Book
References
2Experimentallnvestigation on Strent&nsp;Failure and Crack Evolution Behavior of Brittle Sandstone
Containing a Single Fissure
2.1Experimental Studies
2.1.1Sandstone Material
2.1.2Preparation for Specimen with Single Fissure
2.1.3Experimental Equimn&bsp;and Procedure
2.2 Strent&nsp;and Deformation Behavior
2.2.1Uniaxial Stress—Strain Curves of Sandstone
2.2.2Effect of Single Fissure Geometry on Mechanical Parameters of Sandstone
.Crack Evolution Behavior
..1Crack Coalescence Type of Sandstone Specimens Containing a Single Fissure
..2AE Behaviors oflntact and Flawed SandstoneSpecimens with Single Fissure Geometries
..Real—Time Crack Evolution Process of Sandstone Containing a Single Fissure
2.4Conclusions
References
3Experimentallnvestigation on Crack Evolution Behaviorof Brittle Sandstone Containing Two Coplanar Fissuresin the Process of Deformation Failure
3.1Experimental Material and Procedure
3.1.1Physical Behavior of Tested Specimens
3.1.2Specimens Containing Two Coplanar Fissures
3.1.3Testing Equimn&bsp;and Procedure
3.2Influence of Coplanar Fissure Angle on Strent&nsp;and Deformation Behavior
3.2.1Deformation Failure Behavior oflntact SandstoneSpecimen
3.2.2Deformation Failure Behavior of Flawed Sandstonewith Two Coplanar Fissures
3..Relationship Between Coplanar Fissure Angleand Mechanical Parameters
3.3Crack Initiation and Coalescence Behavior Analysis
3.3.1Crack Coalescence Type of Sandstone Containing Two Coplanar Fissures
3.3.2Crack Initiation and Coalescence Behaviorof Pre—fissured Sandstone
3.4Conclusions
References
4Experimentallnvestigation on Fracture Evolution Behavior of Brittle Sandstone Containing Three Fissures
4.1Specimen Preparation and Testing Procedure
4.1.1Sandstone Material and Specimen Preparation
4.1.2Testing Procedure
4.2Analysis of Experimental Results
4.2.1Axial Stress—Strain Curve oflntact Specimen
4.2.2Axial Stress—Strain Curve of Flawed SpecimensContaining Three Fissures
4.3Crack Initiation Mode and Analysis of the Coalescence Process
4.3.1Crack Initiation Mode and Stress Analysis
4.3.2Real—Time Crack Coalescence Process of Specimensfor β2 = 75° and 90
4.3.3Real—Time Crack Coalescence Process of Sandstone Specimens Containing ThreeFissures （β2 = 105° and 120°）
4.4Crack Coalescence Type and Strain Evolution Analysis
4.4.1Crack Coalescence Type Analysis
4.4.2Strain Evolution Analysis
4.5Conclusions
References
5Experimentallnvestigation onFracture Coalescence.Behaviorof Red Sandstone Containing Two Unparallel Fissures
5.1Experimental Material and Loading Procedure
5.1.1Experimental Material and Specimen Preparation.
5.1.2Loading Procedure and AE Monitoring
5.2Strent&nsp;and Deformation Behavior
5.2.1Axial Stress—Axial Strain Behavior
5.2.2Strent&nsp;and Deformation Parameters
5.3CrackingMode and Characteristics
5.4Crack Coalescence Process and AE Behavior
5.5Conclusions
References
6Discrete Element Modeling on Fracture Coalescence Behavior of Red Sandstone Containing Two Unparallel Fissures
6.1Discrete Element Modeling Method
6.1.1Micro—Bond Model
6.1.2Numerical Specimen
6.1.3Simulation Procedure
6.2Confirmation for Micro—Parameters of Red Sandstone
6.2.1Confirming Method for Micro—Parameters of Red Sandstone
6.2.2Calibrating Micro—parameters by ExperimentalResults of Intact Specimen
6.3Numerical Results of Red Sandstone Containing Two Unparallel Fissures
6.3.1Strent&nsp;and Deformation Behavior
6.3.2Cracking Characteristics
6.4Stress Field in Red Sandstone Containing Two Unparallel Fissures
6.5Conclusions
References
7Fracture Mechanical Behavior of Red Sandstone Containinga Single Fissure and Two Parallel Fissures After Exposure to Different High—Temperature Treatments
7.1Rock Material and Testing Procedure
7.1.1The Experimental Material and Heating Procedure
7.1.2Specimen Preparation and Fissure Geometry
7.1.3Testing Procedure and AE Monitoring
7.2Strent&nsp;and Deformation Behavior
7.3Fracture Evolution Behavior
7.4Interpretation and Discussion
7.5Conclusions
References
8Experimentallnvestigation on Strent&nsp;and Failure Behavior of Pre—cracked Marble Under Conventional Triaxial Compression
8.1Experimental Methodology
8.1.1Marble Material
8.1.2Pre—cracked Sample Preparation
8.1.3Experimental Procedure
8.2Triaxial Experimental Results of Pre—cracked Marble
8.2.1Brittle—Ductile Transition Mechanism oflntact Marble
8.2.2Triaxial Stress—Strain Curves of Pre—cracked Marble
8.3Strent&nsp;Behavior of Pre—cracked Marble
8.3.1Strent&nsp;Behaviorin Accordance with Mohr—CoulombCriterion
8.3.2Strent&nsp;Behaviorin Accordance with Hoek—Brown Criterion
8.3.3A New Evaluation Criterion Based on OptimalApproximation Polynomial Theory
8.4Failure Mode of Pre—cracked Marble
8.5Conclusions
References
9Numericallnvestigation on the Failure Mechanical Behaviorof Red Sandstone Containing Two Coplanar Fissures UnderConventional Triaxial Compression
9.1Discrete Element Model and Micro—Parameters
9.1.1Intact Red Sandstone Material and Micro—Parameters
9.1.2Comparison ofTriaxial Experimental and NumericalResults of Intact Specimen
9.2Macroscopic Strent&nsp;and Deformation Behavior
9.2.1Triaxial Deformation Behavior of Red Sandstone Containing Two Coplanar Fissures
9.2.2Triaxial Strent&nsp;Behavior of Red Sandstone Containing Two Coplanar Fissures
9.3Fracture Evolution Behavior
9.3.1Fracture Evolution Process oflntact Specimen
9.3.2Fracture Evolution Process of Flawed Specimen
9.3.3Effect of Confining Pressure and Coplanar Fissure Angle
9.3.4Stress and Displacement Field
9.4Conclusions
References

Dr. Sheng-i Yang was born in December 1978. In 2003, he started his Ph.D. research, in Hohai University,Nanjing, PR China, and got Geotechnical Engineering of Doctor's degree in April 2006. In 2007-2008, he continued his postdoctoral work in Ecole Polytechnique de Paris, France. In 2014-2015, he obtained an Endeavour Research Fellowship in Australia and commenced his research in the Department of Civil Engineering, Monash University, as a visiting professor.From 2012, he has been promoted as a full-time professor and a Ph.D. supervisor in China University of Mining and Technology. In March, 2014, he was elected as an assistant director of State Key Laboratory for Geomechanics and Deep Underground Engineering. In 2013, he was awarded the Program for New Century Excellent Talents in University from Ministry of Education. He obtained the Youth Science and Technology Awar fo Chinese Society for Rock Mechanics and Engineering and Sunyueqi Foundation Council. In 2011, he also obtained the Second Prize of Science and Technology Progress from Ministry of Education. In the past 5 years,he took charge of more than ten key scientific projects including three projects from National Natural Science Foundation of China (NSFC). His research interests focus mainly on deep-fissured and jointed rock mechanics; rock creep (time-dependent) experimental and model mechanics; and deep underground rock mass engineering and reinforced technique.