METHOD OF UNDER-LEVEL PLASTS' DEVELOPMENT PROCESSING WITH THE BINDING OF THE ESTABLISHED SPACE Russian patent published in 2018 - IPC E21C41/16 E21F15/00 

FIELD: mining.

SUBSTANCE: way to include the preparation of the extraction site to simulate the extraction fail plot of under-level short treatment sides, ventilated due to the general mine depression. The working out of the formation begins under the protection of the previously erected inter-horizon insulating strip, and in the presence of intercalation pillars also the insulating strips that were previously erected simultaneously with the flank slopes from the hardening tab with the advance of the cleaning work moving in the direction from the inter-horizon strip to the main drift. The working out of the excavating section is carried out in one wing - from the spent section towards the central slope, and in the other - from the central ramp to the target in the direction of the untreated excavation site, at a given value of the step of laying the worked-out space, no more than the allowable span of exposure of the roof of the formation along the line of incidence and strike.

EFFECT: reducing labour intensity and ensuring the safety of mining operations.

2 dwg