Abstract
In this study, the TBM Resistivity Prediction (TRP) system is developed for predicting the location, thickness, permittivity ratio and electrical conductivity of anomalous zones ahead of tunnel face using the measured resistivity of the ground. The applicability of the developed system was verified by performing field tests at a construction site in which an EPB-shield TBM is used for tunnelling work. In the first field test, it was found that the rock around the tunnel face had the same resistivity and permittivity with the rock ahead of the tunnel face indicating no anomaly ahead of the tunnel face. In the second test, a stronger zone 5-m thick was predicted ahead of the tunnel face based on lower permittivity than that of the rock around the tunnel face. The ground condition assessed by the newly developed TRP system matched well with that either predicted from geophysical exploration or directly obtained from drilling boreholes or from daily observed muck conditions.
| Original language | English |
|---|---|
| Title of host publication | ITA-AITES World Tunnel Congress 2016, WTC 2016 |
| Publisher | Society for Mining, Metallurgy and Exploration |
| Pages | 1955-1964 |
| Number of pages | 10 |
| Volume | 3 |
| ISBN (Electronic) | 9781510822627 |
| Publication status | Published - 2016 |
| Event | ITA-AITES World Tunnel Congress 2016, WTC 2016 - San Francisco, United States Duration: 2016 Apr 22 → 2016 Apr 28 |
Other
| Other | ITA-AITES World Tunnel Congress 2016, WTC 2016 |
|---|---|
| Country | United States |
| City | San Francisco |
| Period | 16/4/22 → 16/4/28 |
ASJC Scopus subject areas
- Civil and Structural Engineering