Presentation Information

[VI-629]Attempt to Reduce Overbreak by Combining Computer Jumbo and Pre-Splitting.

*Hajime Hamada1, Ryohei Miura1, Yusuke Horiuchi1, Tomoaki Murakami1 (1. Okumura Corporation)

Keywords:

Mountain Tunnel,Computer Jumbo,Controlled Blasting,Pre-Splitting,Guide Hole,Outbreak