NUMERICAL SIMULATION OF ROCK MASSIF STRESS STATE AT NORMAL FAULT AT UNDERGROUND LONGWALL COAL MINING

Main objective of the executed researches was assessment of the stress and strain state of the rock massif at a normal fault for definition of the rational location of entries of the panel. Numerical simulations were carried out for conditions of flat coal mining by longwall at a normal fault of less than seam displacement. The analysis of the existing normative documents actual scientific researches and issues investigating influence of a fault was made. The possibility of use of numerical simulations for assessment of level of stress at fault is shown and recommendations about arrangement of longwall panel entries are made. The novelty of researches consists in establishment of dependence of the stress and strain state of the rock massif at a fault from the major geological and mining factors