Application of Deep-hole Blasting Method for Driving Raiserock hole in Lunan Mining
GENG Ke
JIANG Dinghai
MU Jincheng
Abstract：Lunan mining adopted deep-hole cutting blasting technology for cutting raiserockhole. By adjusting and checking the position and dip of the drilling machine, the deflection rate of the hole being not large than 0.5%was ensured. Combined with the ore characteristics, the layout parameter and charge weight of the blasthole and hole spacing were calculated and the priming network and sequence were confirmed. Through carefully designing and constructing, the blasting effect is good and the overbreak or underbreak is little. Compared with the common method, the deep-hole blasting method decreased driving cost by 280 Yuan/m3, reduced the construction period of 1.5 d and greatly improved the working environment.
Keywords：driving raiserockholedeep-hole blastingcutting methodborehole drilling
Publication Date：2013-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：2( 16-17 )