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Experimental research on shaft sinking by single long-hole and multi-hole blasting of spherical cartridge based on QED

Liu Yinpeng;Zhang Xiaorui;Zhou Wenchao;Xu Jikang;Anhui Jiangnan Chemical Industry Co.,Ltd.;Changchun Gold Research Institute;Changde Econormin Development Investment Group Co.,Ltd.;Xi'an Engineering Co.,Ltd.of China Building Materials Industrial Construction;  
Shaft construction is an important step in mining.This paper adcpts the methcd of shaft sinking by single long-hole and multi-hole blasting of spherical cartridge,which is a relatively new techique.Based on the simulation of the blasting crater theory,the paper simulates blasting designs of different parameters with the QED software,and then analyzes the blasting energy distribution to reduce the clamp hysteresis effect and to improve the effect of shaft sinking by single long-hole and multi-hole blasting of spherical cartridge.
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