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