With the prominent economic progress in China, the exploitation and utilization of underground space is becoming increasingly important. A lot of projects such as underground caverns, tunnels, mines, and powerhouses have been built or programmed. Rock engineering takes place in a special environment with geo-stress and complex environmental conditions (i.e., thermo-hydro-mechanical-chemical coupling environment).

In the past few decades, many disasters have occurred during these engineering projects. In order to mitigate the risks in rock engineering under multi-field coupling conditions, the mechanisms related to rock/discontinuity deformation, strength, and failure should be understood. New theories, methods, and techniques related to multi-field coupling models, numerical simulation methods, and test methods will be extremely helpful for the construction safety of rock engineering.

The aim of this Special Issue is to attract original research and review articles with a focus on the new theories, methods, and techniques of multi-field coupling in rock mass and rock discontinuity. Articles on multi-field coupling theory and simulation methods for the safety of rock engineering are especially welcomed.

Potential topics include but are not limited to the following:

• Multi-field coupling effects in rock engineering
• Multi-field coupling theory for rock mass and rock discontinuity
• Complex mechanical behavior of rock mass and rock discontinuity
• Failure mechanism of rock mass and rock discontinuity
• Testing methods for rock mass and rock discontinuity under multi-field conditions
• Numerical simulation methods for rock mass and rock discontinuity under multi-field conditions