1 Research Scheme Design 1.1 Scientific Understanding of the Stress Situation of Coal 1.2 Test System and Principle 1.3 The Core Content of the Book and the Logical Relation Between Them 2 Failure Characteristics and Meso-deterioration Mechanism of Pre-stressed Coal Subjected to Different Dynamic Loads 2.1 Introduction 2.2 Specimens Preparation and Basic Properties of Coal 2.3 The Effect of Pre-static Load and Dynamic Load on Dynamic Response of Coal 2.4 Dynamic Failure Mechanism of Coal under Coupled Static and Dynamic Loads 2.5 Discussion on the Fatalness of Coal Pillar Burst under Coupled Static and Dynamic Loads and Its Prevention 2.6 Conclusions References 3 The Effects of Water Content on Dynamic Mechanical Properties of Coal 3.1 Introduction 3.2 Specimens Preparation and Water Treated 3.3 Static Mechanical Properties of Coal with Different Water Contents 3.4 The Influence of Water Content on Dynamic Mechanical Properties of Coal 3.5 Energy Transmission and Dissipation 3.6 Conclusions References 4 The Effects of Water Content and External Incident Energy on Coal Dynamic Behaviour 4.1 Introduction 4.2 Specimens Preparation 4.3 The Effect of Water Content and Incident Energy Level on Dynamic Response of Coal 4.4 The Effect of Water Content and Incident Energy on Dynamic Failure 4.5 Discussion about the Effective Prevention Measures for Dynamic Disasters 4.6 Conclusions References 5 The Role of Porosity in the Dynamic Disturbance Resistance of Water-saturated Coal 5.1 Introduction 5.2 Specimens Preparation and Basic Properties Test 5.3 Dynamic Compression Test and Analysis 5.4 Dynamic Failure Mechanism of Water-saturated Coal 5.5 Discussion on Efficient Methods for Dynamic Disaster Instability 5.6 Conclusions References 6 Dynamic Response and Failure Mechanism of Fractured Coal under Different Soaking Times 6.1 Introduction 6.2 Basic Properties of Coal 6.3 The Influence of the Soaking Time on the Dynamic Response of Coal 6.4 Discussion about the Dynamic Mechanical Mechanism of Coal under Different Soaking Times 6.5 Conclusions References 7 Dynamic Mechanical Mechanism and Optimization Approach of Roadway Surrounding Coal Water Infusion for Dynamic Disaster Prevention 7.1 Introduction 7.2 Damage Distribution in the Roadway Surrounding Coal 7.3 Stress Wave Propagation Mechanism in Roadway Surrounding Coal 7.4 The Effect Mechanisms of Water Infusion on the Dynamic Disasters 7.5 Optimization Approaches of Water Infusion 7.6 Water Infusion Effect Verification for Dynamic Disasters Prevention
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