Consequences of limited stand-up time in TBM tunnels
Abstract
Stand-up time inadequate for the chosen method of construction, and inadequate strength in relation to stress were the two top categories of geological problems identified in a US study of 87 underground projects in rock ( Nelson 1993 ). If we add the third most frequent problem area – unanticipated groundwater inflows, it is clear that correct use of classification methods capable of representing these problems could help designers, contractors and owners in preparing for such problems. Improved pre-investigations are an unavoidable pre-requisite.
Fields of Study & Subjects
Tunneling and Rock Mechanics
Rock Mechanics and Modeling
Geotechnical Engineering and Analysis
Publication details
- Journal / source
- CRC Press eBooks
- Pages
- 65–69
- Publication date
- 19 January 2026
- Language
- EN
- Document type
- Book chapter