1 Deep Rock Mass Environment and Energy System
1.1 Scientific definition and mechanical connotation of "deep"
1.2 Occurrence environment of deep rock mass
1.3 Deep rockburst
1.3.1 Analysis of rockburst mechanism
1.3.2 Rockburst grade and tendency
1.4 Energy theory of rock
1.4.1 Types of energy in rock deformation failure
1.4.2 Rock deformation failure and energy transformation
2 Analysis of Energies in Deep Tunnel and Hostrock
2.1 Energy accumulation and release in tunnel and hostrock
2.1.1 Rock deformation failure and energy transformation
2.1.2 Energy release features
2.2 Analysis of hostrock energy dissipation law
2.2.1 Analysis and calculation model
2.2.2 Plastic energy of plastic deformation
2.2.3 Friction energy dissipated by crack slip
2.2.4 Surface energy dissipated by crack propagation
2.3 Deep tunnel example analysis
2.4 Summary
3 Linear Elastic Energy Storage in Deep Granite
3.1 Theoretical calculation of elastic energy storage value
3.2 Linear elastic energy storage based on initial point of fracture
3.2.1 Determination of initial stress of rock crack
3.2.2 Rock sample preparation and test process
3.2.3 Result analysis
3.3 Energy storage characteristics of granite under triaxial compression
3.3.1 Test process
3.3.2 Result analysis
3. 4 Calculation of linear elastic energy storage based on stepped cyclic loading and unloading test
3.4.1 Test equipment and test scheme
3.4.2 Testing results and data analysis
3.5 Summary
4 Elastic Energy Storage Limit Considering Strain Time-delay Characteristics
4.1 Energy storage characteristics of granite under peak unloading conditions
4.1.1 Test scheme
4.1.2 Testing result and peak strain energy analysis
4.2 Elastic strain time-delay characteristics of granite
4.3 Determination of time-delay strain value of deep granite
4.3.1 Pretest treatment
4.3.2 Phased cyclic loading and unloading test
4.3.3 Elastic time-delay strain rebound monitoring of granite
4.4 Elastic energy storage limit considering time-delay characteristics
4.5 Prediction of rockburst tendency based on energy storage characteristics
4.6 Summary
5 Study on Fracture Energy Dissipation Characteristics of Rock
5.1 Mechanism of dynamic load impact fracture of rock
5.1.1 State equation
5.1.2 Grady-Kipp model
5.2 Study of dynamic parameters
5.2.1 Impact hardening factor
5.2.2 Analysis of rock impact test
5.2.3 Impact simulation analysis
5.2.4 Analysis of hardening results
5.2.5 Constitutive relation of impact hardening correction
5.3 Analysis of rock fracture energy dissipation
5.3.1 Principle of fracture energy dissipation for SHPB experiment
5.3.2 Analysis of fracture energy dissipation
5.4 Fracture energy dissipation under different stress ratios
5.4.1 Test instrument
5.4.2 Test process
5.4.3 Analysis of tested results
5.5 Summary
6 Study on Friction Energy Dissipation Characteristics of Deep Granite
6.1 Shear friction test on granite
6.1.1 Preparation of rock samples and structural planes
6.1.2 Shear friction test
6.2 Characterization of rough structural plane of granite
6.2.1 Binocular laser scanning of roughness of structural plane
6.2.2 Rough characteristic characterization based on fraetal theory
6.3 Simulation study on friction energy dissipation mechanism of structural plane
6.4 Summary
7 Study on High-damping Energy Absorbing Bolt and Energy Absorbing Support
7.1 Analysis of applicability of deep tunnel hostrock bolt support
7.1.1 Analysis of structural failure mode of tunnel support by rockburst
7.1.2 Functional requirements of roekburst for hostrock support structure
7.2 Experimental study on dynamic characteristics of energy absorbing materi
