Gas disasters such as coal and gas outbursts are the main challenges for safe and high-efficiency coal mining. Lowering the gas content to the required standard is the key measure for the effective control of gas disasters. Thus, coal mine gas drainage has been the necessary working procedure of coal mine with outburst risk.

Generally, coal mine gas drainage can be divided into two types, namely, surface gas drainage and underground gas drainage. Numerous methods have proposed following the above two types, all of which involve the interactions of coal, gas, and even water. The settlement of the fluid-solid coupling problems in coal mine gas drainage is the essential prerequisite for the successful application of the proposed gas drainage methods. However, information discussing the fluid-solid coupling mechanisms within the process of coal mine gas drainage is insufficient. This has imposed restrictions on the development of related techniques. Therefore, there is an urgent need for further research in related fields. Theoretical, laboratory and numerical studies should be further conducted.

The aim of this Special Issue is to bring together original research and review articles discussing the unresolved complicated fluid-solid coupling problems in coal mine gas drainage. We hope this Special Issue also highlights improvements in mitigating gas disasters.

Potential topics include but are not limited to the following:

• Fluid-solid coupling problems in coal mine gas drainage fundamentals
• Fluid-solid coupling problems in coal mine gas drainage equipment
• Fluid-solid coupling problems in the drilling of coal mine gas drainage boreholes
• Fluid-solid coupling problems in sealing of coal mine gas drainage boreholes
• Fluid-solid coupling problems in surface coal mine gas drainage
• Fluid-solid coupling problems in regional coal mine gas drainage
• Fluid-solid coupling problems in local conventional coal mine gas drainage
• Fluid-solid coupling problems in fracturing-based enhanced coal mine gas drainage
• Fluid-solid coupling problems in heating-based enhanced coal mine gas drainage
• Fluid-solid coupling problems in displacement-based enhanced coal mine gas drainage
• Fluid-solid coupling problems in biotechnology-based enhanced coal mine gas drainage