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Chapter 1 Introduction
1£®1 Background and Significance
1£®2 Foreign and Domestic Researches
1£®2£®1 Current research of rock bursts
1£®2£®2 Current research of geostress pre-relief controlled blasting
1£®2£®3 Current research on numerical simulation of the stability of surrounding rocks
1£®3 Main Research Contents and Technical Route
1£®3£®1 Research contents
1£®3£®2 Technical route
1£®4 Expected Target
1£®5 Main Innovations

Chapter 2 Factors and Preventing Methods of Rockbursts
2£®1 Definition of Rockburst
2£®2 Conventional Evaluation Indexes of Rockbursts
2£®3 Establishment of Numerical Model for Analyzing Factors of Rockbursts
2£®3£®1 Introduction to simulation tools
2£®3£®2 Model establishment and benchmark simulation
2£®4 Impact of Rock's Physical and Mechanical Properties on Rockbursts
2£®4£®1 Qualitative analysis of the impact of rock's physical and mechanical properties on rockbursts
2£®4£®2 Quantitative analysis of the impact of rock's physical and mechanical properties on rockbursts
2£®5 Numerical Analysis of the Effects of Excavating and Supporting Conditions on Rockbursts
2£®5£®1 Numerical analysis of the effects of full-face excavation and stepwise excavation on rockbursts
2£®5£®2 Numerical analysis of the effect of supporting conditions on rockbursts
2£®6 Recommended Ideas for Controlling High-intensity Rock Bursts
2£®7 Summary

Chapter 3 Mechanism of the Pre-release De-stress Blasting for Rockbursts
3£®1 Definition of De-stress Blasting
3£®2 Microscopic Mechanism of the De-stress Blasting
3£®3 Derivation of the Calculation Formula of Residual Stress after De-stress Blasting
3£®3£®1 Derivation of de-stress blasting equation on two-dimensional plane
3£®3£®2 Deduction of the de-stress blasting equation on 3-dimensional plane
3£®4 Role of the Stress Pre-release Loose Circle
3£®5 Factors Influencing De-stress Blasting Effectiveness
3£®6 Summary

Chapter 4 Experimental Study on Rock Mechanics of Surrounding Rocks in Tunnels
4£®1 Lab Environment
4£®2 Test Methods and Results
4£®2£®1 Uniaxial compressive strength test
4£®2£®2 Tensile strength test
4£®2£®3 Normal triaxial compression test
4£®3 Summary

Chapter 5 Optimization of Parameters for Pre-release De-stress Controlled Blasting Based on Numerical Simulations
5£®1 Response Platforms of Numerical Simulation Analysis
5£®1£®1 ANSYS/LS-DYNA numerical platform
5£®1£®2 FIAC 3D numerical analysis platform
5£®2 Calculation Process of De-stress Controlled Blasting
5£®2£®1 ANSYS/LS-DYNA numerical simulation blasting
5£®2£®2 Coupling process of ANSYS/LS-DYNA and FIAC 3D
5£®2£®3 Stress release simulation of de-stress blasting in tunnel
5£®3 Scheme for the De-stress Controlled Blasting
5£®3£®1 Overall plan
5£®3£®2 Design for orthogonal experiment numerical simulation
5£®3£®3 Design for single factor numerical simulation
5£®4 Result Analysis of Numerical Simulations
5£®4£®1 Result analysis of orthogonal experiment numerical simulation
5£®4£®2 Result analysis of single-factor numerical simulation
5£®5 Summary
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Chapter 6 On-site Tests of Stress Release by Borehole De-stress Blasting
Chapter 7 Application of De-stress Controlled Blasting in Double-shield TBM Tunnel

Conclusion and Outlook
Acknowledgements
References