METHOD OF DEVELOPMENT OF ELGINSKIY COAL BASIN Russian patent published in 2009 - IPC E21C41/18 

FIELD: mining.

SUBSTANCE: invention can be implemented for exposing and development of Elginskiy coal basin in Republic of Saha (Yakutia). The method of underground development consists in division of the basin into upper and lower beds, in driving pair galleries in the bed and in driving auxiliary pair of inclined excavations till the very upper bed in every elevation, also in using one branch of inclined excavations and galleries for transporting coal from the point of loading to a concentration plant. All beds of the basin are developed by an underground method successively in a descending order, for the purpose of which within the boundaries of bed attitude contour and for stoped excavation opening out of each bed is performed with long columns by means of mechanised complexes. The rest coal stores at exposures and those not excavated by long columns are worked out either by short wall face technology or by drilling coal out at bed exposures.

EFFECT: facilitating preservation ground surface at deposit area and eliminating hazardous effect to environment.

3 dwg