FIELD: mining.
SUBSTANCE: invention relates to mining for open-underground development of flat-lying minerals and can be used in distribution of perennial permafrost for extraction of mineral resources using technology of deep development of formation. Proposed method comprises preparation of site for extraction complex and its assembly, extraction of mineral by means of cleaning chambers by means of parallel workings, and underground working. Site preparation for excavation works is performed by rifling of cut trench across strike of formation. At a distance from the trench of not more than depth of the excavation of the complex, the underground mine is drilled by the formation dip. Extraction of mineral from cleaning chambers is performed along the strike of the formation until the chamber with the underground mine opening intersects and the chambers are filled with a hardening solution.
EFFECT: improving development efficiency of a flat-lying mineral deposit.
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