Alexsandrov S. Justification and development of ways of providing work safety at maintenance of developments steep coal layers

A new solution to relevant scientific-technical objective is submitted in the dissertation which involves how to ensure safety while maintaining the workings of steep coal seams with floor sliding and in discovering the laws of geomechanical processes in unloading coal containing the array of complex natural hazards. A complex natural hazard helps to improve the state of the roof rocks and soil in their interaction with security facilities and prevents sliding wall rocks by means of decrease rock lamination in consequence of strengthening layer sliding down. The equilibrium conditions of the soil stratified rocks along the length of the lava steep coal seam have been established when they collapse and slipping impossible. A new way protection of development workings in the development of steep coal seams with soils prone to slipping has been justified which provides road maintenance in an operational state by rock anchor bedrock. The main thrust of the work is characterized as a social. This provides increased security operations in underground conditions. All developed solutions designed to create safe working conditions and reducing accident rate miners.