Cut-off prevention type wide space blasting method using MS detonator and multi-stage blasting

摘要

The present invention relates to a cut-off prevention wide space blasting method using MS detonator and multi-stage blasting, which utilizes an inexpensive electric detonator and a multi-stage blasting device capable of detonating one hole per delay to prevent a cut-off phenomenon. Prevents and implements the WSB (Wide Space Blasting) blasting method by changing only the detonator arrangement while applying the same perforation and work pattern as before, so drilling and charging work is easy, and the control of the front flying stone is easier compared to the existing blasting method, improving safety. The main configuration, including the blast hole drilling step (S10), the detonation sequence knitting step (S20), and the blasting step (S30), so as to promote the blast hole.