DRYING METHOD OF ROCK-COAL MASSIF Russian patent published in 2012 - IPC E21C41/26 F42D3/00 

Abstract RU 2454541 C1

FIELD: mining.

SUBSTANCE: method includes preliminary drilling of one or several rows of blasting wells in rock-coal massif. During preparation to drying of rock-coal massif, blasting wells are drilled in line on working platforms of rock-coal massif along outline of dried rock-coal massif at a distance 3-5 m from each other, at that wells are drilled with subdrilling 1-3 m below mark of low dried projection, maximum height of dried rock-coal massif is limited by maximum drilling depth of drilling machine.

EFFECT: reducing the cost of rock mass to be exploded due to use of explosives non-resistant to water as a result of drying of the rock-coal massif to be exploded.

1 ex, 3 dwg

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RU 2 454 541 C1

Authors

Fedotenko Viktor Sergeevich

Dates

2012-06-27Published

2010-12-27Filed