Abstract:

During the coal exploitation process at the longwall faces, due to soft and loose coal, there have been the face failures, causing many difficulties in coal mining activities, moving support and leading to the interrupted technological links, not only affecting on the labor productivity, mining production and working plan but also making unsafe for people working in mine. The study and application of alternatives for solving the problems of face failures is essential to maintain normal operations for the mine and ensure the safe working conditions for workers