Roof Fall Hazard Monitoring and Evaluation—State-of-the-Art Review

A roof fall hazard is still one of the major threats in underground mining industry. Each such type event always brings great risk to miners and causes serious interruptions process rock excavation. In general, possibility occurrence directly related local geology, presence horizontal stresses as well excavation method efficacy utilized support. Due complexity this process, it important continuously evaluate risk, especially long life-time places where a crew often present. Within article, detailed review current methods monitoring evaluating was presented. Based on extensive literature survey, different types devices were described, their advantages disadvantages pointed out. Furthermore, new trends area described discussed.