Boring in exceptionally tough, high-stress conditions
Abstract
In Figure 44 , the adjectives tough, very tough, exceptionally tough and so on are implied when the Q tbm value exceeds 100, 1000 and 10,000. The Q TBM range does not stop at 10,000 however, a fact that is suitably demonstrated by Table 16 .
Fields of Study & Subjects
Tunneling and Rock Mechanics
Advanced machining processes and optimization
Drilling and Well Engineering
Publication details
- Journal / source
- CRC Press eBooks
- Pages
- 91–94
- Publication date
- 19 January 2026
- Language
- EN
- Document type
- Book chapter