The relationship between PR, AR and Q TBM
Abstract
The development of a workable TBM performance prediction model is based on the following basic equations, which have been presented earlier: https://www.w3.org/1998/Math/MathML" display="inline"> AR=PR × T m (see Fig. 34 and data trends in Fig. 35 ) https://www.w3.org/1998/Math/MathML" display="inline"> Q TBM = RQD o J n × J r J a × J w ( F / SIGMA ) (see Chapter 14 , Equation 6 ) https://www.w3.org/1998/Math/MathML" display="inline"> SIGMA = 5 γ Q c 1 / 3 (see Chapter 14 , Equation 7 )
Fields of Study & Subjects
Tunneling and Rock Mechanics
Rock Mechanics and Modeling
Soil Mechanics and Vehicle Dynamics
Publication details
- Journal / source
- CRC Press eBooks
- Pages
- 70–73
- Publication date
- 19 January 2026
- Language
- EN
- Document type
- Book chapter