This book introduces the basic knowledge and engineering application of coal seam gas disaster prevention and control.The book systematically expounds many parts，including basic concept of coal seam gas，gas generation and occurrence characteristics，porosity and adsorption characteristics of coal，coal seam gas basic parameters，mechanical properties of coal and its seepage characteristics，coal seam gas migration and emission，gas disaster prevention and control in coal mines （gas outburst and gas explosion），coal seam gas reserves evaluation，coal seam gas extraction methods，design of gas extraction，coal seam gas utilization and so on.
This book can be used by teachers and students of safety engineering，coalbed methane engineering，mining engineering and other related majors，and can also be used as a reference for the technicians of coal enterprises and researchers of scientific research institutes.

Chapter 1 Origin of Coal Gas
1.1 Fundamental Concepts of Coal and Coal Gas
1.2 Gas Generation
1.3 Methods for Characterizing the Origin of CBM
1.4 Gas Compositions and Characteristics
1.5 Objectives of Coal Mine Gas Control and Utilization
References
Chapter 2 Coal Porosity and Sorption of Gases
2.1 Coal Porosity
2.2 Gas Occurrence in Coals
2.3 Sorption Isotherms and Desorption Equations
2.4 Methods for Testing Desorption and Desorption Features
2.5 Influencing Factors of Gas Adsorption on Coal
References
Chapter 3 In-Situ Gas Pressure and Content in Coal
3.1 Conceptions of Coalbed Gas Pressure and Content
3.2 Vertical Zonation of Coalbed Gas
3.3 Gas Pressure
3.4 Gas Content
References
Chapter 4 Mechanical Properties and Gas Permeability of Coal
4.1 Coal Mechanical Properties
4.2 Coal Structure and Fracture Geometry
4.3 Matrix Deformation Due to Sorption
4.4 Coal Permeability
References
Chapter 5 Gas Transport in Coal Matrix and Its Emissions
5.1 Gas Transport
5.2 Basic Gas Transport Theories in Coal Seams
5.3 Governing Equations for the Gas Transportation in Coal Seams
5.4 Gas Emission
References
Chapter 6 Gas Disaster in Coal Mines
6.1 Coal and Gas Outburst
6.2 Gas Explosion
References
Chapter 7 Coal and Gas Outburst Prevention and Control
7.1 Classification， Purpose and Indexes of Gas Extraction
7.2 Criteria of Coal and Gas Outburst Coal Seams
7.3 Procedure of Gas Outburst Prevention and Control
7.4 Gas Control for Coal Uncovering During Cross-cut
References
Chapter 8 Gas Explosion Prevention and Control
8.1 Characteristics and Control Factors of Gas Explosion
8.2 Explosion Protection Philosophy and Measurements
8.3 The Countermeasures and Suggestion for Gas Explosion Protection
References
Chapter 9 Evaluation of Coalbed Methane Reservoirs
9.1 Gas Reserve Categories
9.2 Influencing Factors of Gas Preservation
9.3 Calculation Method of Coalbed Methane Resource Quantity
9.4 CBM Reservoir in China and the USA
References
Chapter 10 Pre-drainage Methods for CBM Reservoirs
10.1 What is Pre-drainage Methods.7
10.2 Vertical Well Construction for Pre-drainage
10.3 In-seam Boreholes Drilled Directionally From the Surface and Underground
10.4 Underground-drilled Boreholes With In-seam Boreholes or Crossing Boreholes
References
Chapter 11 Post-and Gob Gas Drainage Methods
11.1 Fundamental Theories of Relieved Gas Drainage
11.2 Vertical and Horizontal Gob Wells-drilled From the Surface
11.3 Underground Cross-measure Boreholes Drainage
11.4 Comprehensive Extraction Technology for Coal Mine Methane
11.5 Conditions and Analysis of Existing Problems of Coal Mine Gas Extraction
References
Chapter 12 Safe and Efficient Simultaneous Extraction of Coal and Gas
12.1 Definition
12.2 Theoretical Basis
12.3 Engineering Methods
12.4 Engineering Applications
References
Chapter 13 Gas Drainage and Related Systems Design and Management
13.1 Basic Requirement of Gas Drainage System
13.2 Gas Gathering and Collection Systems
13.3 Coal Seam Gas Outburst Prevention and Drainage Management
References
Chapter 14 Comprehensive Utilization of Coal Mine Gas
14.1 Purpose of Gas Utilization
14.2 Coalbed Methane Utilization Necessities and Current Situation in China
14.3 Utilization Technologies of CMM
14.4 Gas Utilization in the Luling Coal Mine
References
Chapter 15 Coal Mine Gas Control Cost Analysis and Related Policies for Gas Drainage and Utilization
15.1 Coal Mine Methane Control Cost Analysis
15.2 Relevant Policies on CMM Recovery and Use
15.3 Barriers to CMM Recovery and Benefi Use
15.4 Policy Recommendations
References