岩石蠕变扰动效应理论及试验研究 岩石蠕变扰动效应导论 1.pdf下载

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岩石蠕变扰动效应理论及试验研究 岩石蠕变扰动效应导论 1 作者：付志亮 等著 出版时间：2010年版 内容简介 　　在深井软岩条件下，巷道围岩应力状态处于岩石强度极限邻域内，围岩会产生较大的蠕变变形。并且，随机扰动荷载会对蠕变变形产生很大的影响。因此，研究岩石的蠕变特性以及岩石在扰动载荷作用下的变形效应，建立蠕变扰动效应理论，对深井软岩支护具有重要的工程实用价值。论文结合国家自然科学基金项目“岩石在强度极限邻域内的扰动蠕变特性实验研究”，围绕岩石的非线性蠕变特性和蠕变扰动效应，应用新研制的常载三轴扰动蠕变仪和弯曲试验仪，进行了岩石单轴压缩蠕变、四点弯曲蠕变和蠕变扰动效应等系列室内试验，主要研究了岩石的非线性蠕变特征、对扰动荷载敏感的邻域范围、强度极限邻域内的蠕变扰动效应等，得到了一系列有意义的研究成果。 目录 1 Introduction 1.1 Research Background and Significance 1.2 History and Present Study 1.2.1 Rheology Test for Rock 1.2.2 Constitutive Models of Rock Rheology 1.2.3 Creep Damage and Fracture of Rock 1.3 Further Research Issues on Rock Creep 1.4 Main Research Methods and Contents 1.4.1 Main Research Contents 1.4.2 Research Methods 1.5 Summary 2 Rock Creep under Uniaxial Compression 2.1 Conventional Tests of Rock under Uniaxial Compression 2.1.1 Rock Specimen Manufacturing and Sonic Wave Screening Testing 2.1.2 Mudstone Uniaxial Compression Test 2.1.3 Red Sandstone Test under Uniaxial Compression 2.2 Tests and Analysis of Rock Creep under Uniaxial Compression 2.2.1 Rock Triaxial Creep Disturbance Apparatus 2.2.2 Test Methods 2.2.3 Strain Measurement 2.2.4 Test Results and Analysis 2.3 Summary 3 Rock Creep Model under Uniaxial Constant Compression 3.1 Fundamental Theory of Damage Mechanics 3.2 Damage Model of Rock Axial Creep 3.2.1 Definition of Damage Variable 3.2.2 Damage Evolution Equations 3.2.3 Damage Threshold Value 3.3 Creep Hardening 3.4 Axial Creep Equation of Damage and Hardening under Uniaxial Compression 3.5 Damage Model of Rock Lateral Creep 3.6 Testing Verification of Creep Constitutive Equations 3.7 Summary 4 Creep Model under Stepwise Loading 4.1 Further Analysis of Creep Test Results 4.2 Further Testing Verification of Strain Hardening Effects 4.2.1 Instantaneous Test 4.2.2 Shortterm Test 4.3 Constitutive Equation and Verification 4.3.1 Constitutive Equations 4.3.2 Validation of Constitutive Equation 4.4 Summary 5 Tests of Disturbance Effects on Rock Creep under Uniaxial Compression 5.1 Project Case of Disturbance Effects on Rock Creep 5.2 Tests and Analysis of Disturbance Effects on Rock Creep 5.3 Tests of Strain Limit Neighborhood and Disturbance Effects on Creep 5.4 Summary 6 Rock Beam Bending Test and Disturbance Effects on Creep 6.1 Bending Creep Test under One Static Load 6.1.1 Creep Test 6.1.2 Analysis of Bending Neutral Plane and Stress 6.2 Bending Creep Test under Static Stepwise Loading 6.3 Bending Creep Test under Continuous Disturbance 6.4 Tests of Bending Creep under Interval and Repetitive Disturbance 6.5 Disturbance Tests within Flexural Strength Neighborhood 6.6 Summary 7 Main Research Results and Conclusions Acknowledgements References