DOI: 10.11799/ce201803007
Research on optimization of deep hole bench loosening blasting parameters in Heidaigou Open-pit Coal Mine
HU Cun-hu
ZHANG Zhan-chang
Abstract：In order to reduce unit explosives consumption of rocL loosening blasting in Heidaigou Open-pit Coal Mine, improve the blasting quality and increase economic benefits, according to the actual blasting operation, by adjusting blasting parameters including changing the density coefficient and reducing over-depth of blast hole, replacing the structure of explosives segmented charge with continuous charge, and replacing the right-angle adjoining of adjacent projectile area with obtuse adjoining. The feasibility of the adjusted blasting parameters is verified through experiments, and it is proved that, after optimization of blasting parameters, the unit consumption of explosives reduces by 17.6%which saves an average annual cost of explosives more than 10 million yuan. Finally, the optimized deep-hole bench loosening blasting parameters is established.
Keywords：Heidaigou Open-pit Coal Minebenchloosening blasting parametersdensity coefficientblast hole over-depthcharge structure
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 22-26 )