Perimeter blasting in a 130 m road cut in gneiss with holes with radial bottom slots
Abstract
This paper presents field trials with a new blasting technique. It uses a simultaneous firing of perimeter holes that have radial bottom slots instead of subdrilling and a bottom charge. The new technique has been tested in multiple row blasting in a 130 m long road cut in gneiss where it has been compared with ordinary smooth blasting. Extensive monitoring of drilling and drilling accuracy, slotting, rock wall properties and the remaining half-casts has been made. The blast damage in the wall was detected by a diamond sawing and dye penetrant technique.
Fields of Study & Subjects
Drilling and Well Engineering
Publication details
- Journal / source
- Explosives and Blasting Technique
- Publisher
- CRC Press
- Pages
- 225–234
- Publication date
- 13 February 2026
- Language
- EN
- Document type
- Book chapter