METHOD FOR DEVELOPMENT OF THIN AND VERY THIN COAL BEDS Russian patent published in 2021 - IPC E21C41/18 E21C27/08 

FIELD: mining.

SUBSTANCE: invention relates to mining, in particular to the development of coal beds, namely thin and very thin coal beds with thickness of up to 1.2 m, including flat-dipping, inclined and steeply inclined coal beds, and can be used for integrated development of coal beds. Method for development of thin and very thin coal beds in dead-end mine working includes carrying out of at least one preparatory mine working, development of formation, cutting blocks of cut superimposed bed rocks or soil and their movement into mined space, drilling wells with the help of drillight systems. Simultaneously performing backfilling material by grinding extracted rock by means of equipment for crushing and filling extraction wells with the help of stowing equipment. Stratum is removed in one or in both sides of the mine working. Prior to grinding blocks of rock are moved to temporary storage place, and backfill material is produced by mixing of crushed rock with water with addition of at least one binding component. Process of extraction wells filling is adjusted depending on current pressure of filling material in filling pipeline of stowing equipment. After completion of filling, shutters of well heads are sealed by pressure bridges.

EFFECT: technical result consists in expansion of application area of development method for thin and very thin coal beds with simultaneous improvement of industrial safety, including control of worked out space.

3 cl, 2 dwg