LITHOLOGICAL AND ENGINEERING-GEOLOGICAL CHARACTERISTICS OF THE ROCKS OF THE TOLBACHAN FORMATION WITHIN THE MIR PIPE FIELD

The Tolbachan suite presents the complex mining and geological conditions for development Mir primary diamond deposit at depths of 1000 to 1400 meters. resumption operations field requires a comprehensive study host rocks, especially in formation intervals high-pressure reservoirs mixed fluid saturation. lithological features determination main physical mechanical parameters were carried out 2020–2021 using standard methods based on core samples experimental wells. As result studies, types rocks Formation described, stratification strata according properties was performed. conducted studies allow characterizing construction underground mine workings, as well predict negative factors affecting deposit.