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GAS-DYNAMIC ASPECTS OF TECHNOLOGIES FOR RECOVERY OF RESERVES IN PROTECTIVE COAL PILLARS
Abstract
On the basis of integrated geomechanical research, techniques for partial recovery of protective coal pillars have been developed that increased appreciably extraction ratio of mineral deposit. Proposed standard pillar recovery techniques are based on the use of modern augering machines. Use of such machines in combination with UkrNIMI accumulated potential and practical experience in the field of assessment of stressedly deformed and gas-dynamic states of coal-rock mass has made it possible to eliminate any damaging of protected objects in the course of mining.
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