Jilin Hongda Trading Co., Ltd , https://www.xuanyitruckpart.com The line spacing is the vertical distance between two adjacent rows of blastholes parallel to the top line of the step slope. In the case of detonation in the order of the rows, the line spacing is the resistance line of the rear row of holes. When the shallow hole is blasted, the line spacing b can be calculated as follows: b = (0.95 ~ 0.98) W d Deep hole blasting b = (0.8 ~ 0.9) W d
February 12, 2024