With the rapid development of the world’s economy, a large number of tunnel projects and traffic projects are being built in mountainous areas. Due to the high and steep terrain conditions, there are many dangerous rock masses on the slope. Under the effects of rainfall, weathering, and man-made disturbances, the dangerous rock masses on the slope collapse from the parent body and move downwards along the slope. This seriously threatens the safety of personnel and equipment in the construction area. As the mountains become steeper and steeper, the frequency of geological disasters from dangerous rock collapses increases significantly. Therefore, the assessment and prevention of collapse disasters is an important and meaningful topic to be researched. For instance, collapse disasters have a serious impact on the construction of highway tunnel projects in China. Therefore, people’s lives and properties are at risk.

Due to the sudden, random, and frequent characteristics of collapse disasters, the speed, kinetic energy, and movement distance of collapsed bodies along the slope are difficult to be predicted and intercepted. The task of disaster prevention and mitigation for collapse is becoming increasingly severe. Therefore, it is necessary to conduct in-depth research on the occurrence mechanism and movement characteristics of collapsed bodies. This type of research can increase people's awareness of collapse disasters, thus effectively improving the prediction and prevention of collapse disasters.

This Special Issue aims to bring together original research and review articles discussing the latest theories about the collapse mechanism of dangerous rock masses, collapse disaster monitoring and prevention equipment, and technologies. Submissions including frontier engineering problems and solutions for collapse disasters are welcome.

Potential topics include but are not limited to the following:

• Frontier theories on the mechanism and assessment of the collapse of dangerous rock masses
• Case study of collapse disaster treatment engineering based on on-site monitoring data
• Numerical simulation and field test of collapse disaster research
• Development and application of collapsed body monitoring equipment and technology
• Prediction and assessment of the hazard of collapse disasters
• Novel theoretical mechanical model investigating collapsed bodies moving along the slope
• Current and novel research methods and techniques for controlling and intercepting collapse bodies