FIELD: mining industry.
SUBSTANCE: method includes opening, performing of opening and extraction operations by open mines, performing underground opening and preparatory mines and extracting operations. Before start of opening operations oat portion of open operations a cutting trench is driven along fall of layer from layer outlet onto surface or under dumps up to limit between open and underground operations, mineral deposit is extracted, which is opened by cutting trench, support for main opening mines is mounted on layer terrain as well as support for chambers of various types, full treatment of bounds an ceilings of mines is performed, while power of layer is kept no less than 3H, where H is height of mines, and opening of shaft field of underground operations portions is performed from constructed opening mines at portion of opening operations along their directions.
EFFECT: higher efficiency.
3 dwg
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