ABSTRACT
Common regularities of anomalous zone formation of stress-strain state of above-the-coal strata nearby longwall are developed over several decades of this event researches, and were created basic for geomechanical researches regardless of mine-geological and mine-technical conditions of coal seams development (Kovalevs’ka 2004 & Zborshik 1991). In front of longwall abutment pressure zone forms and moves in same time with stoping face advance; length of this zone (coordinates X ) on Western Donbass mines estimates mainly within the range to
20-60 m; in cross section of extraction mine working and nearby rocks (coordinate Z ) diagram of vertical rock pressure (component Z ) changes in quality and quantity plan as far as longwall approximation. It is for the reason that more objective development of displacement mechanism of abovethe-coal strata and supporting system loading of extraction mine working primarily was reviewed spatial field diagram у in abutment pressure zone in front of longwall, its quantity view is given on Figure 1.
