山岳トンネル (8)

[VI-943] Consideration of the effect of the drilling angle of the explosive charge hole on the outer circumference of the tunnel on the reduction of overbreak

*Koji Tsukamoto¹, Hajime Hamada¹ (1. Okumura Corporation Technical Research Institute)

Keywords:Computer Drilling Jumbo, Reduction of Overbreak, 3D Laser Scanner, Point Cloud, Drilling Angle