The question of the rationality and necessity of developing thick steeply dipping coal seams prone to spontaneous combustion with backfilling of the mined-out space with waste rock should now be considered finally resolved. In this regard, the choice of the method for performing backfilling operations is of great importance. The correct choice of the method for performing backfilling operations will ensure the production of a stable backfill mass, which will increase the safety of the work and allow coal to be mined without leaving pillars and the associated coal losses. The choice of the method for performing backfilling operations is determined by two main factors: a) the development systems used and b) the nature and properties of the backfilling materials that can be obtained in each individual case. It is clear that when choosing, it is necessary to consider the specifics of each type of backfilling operations.
