GAS-DYNAMIC ASPECTS OF TECHNOLOGIES FOR RECOVERY OF RESERVES IN PROTECTIVE COAL PILLARS

7th International Scientific Conference - SGEM2007, www.sgem.org, SGEM2007 Conference Proceedings/ ISBN: 954-918181-2, June 11-15, 2007

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.

Keywords: coal pillar, auger drill technique, pillar stability.