| Autor: |
Karl Grossauer, Wulf Schubert, Edward Alan Button |
| Rok vydání: |
2004 |
| Předmět: |
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| Zdroj: |
International Journal of Rock Mechanics and Mining Sciences. 41:882-887 |
| ISSN: |
1365-1609 |
| Popis: |
The introduction of geodetic methods to measure absolute displacements in tunnels has improved the value of the data significantly. Structurally controlled behaviour and influences of anisotropy can be determined and the excavation and support adjusted accordingly. In heterogeneous rock masses, a reliable prediction of the conditions ahead of and outside the tunnel profile is of paramount importance for the choice of appropriate excavation and support methods. The increased information contained in the acquired data allows a more comprehensive evaluation of the displacements. The use of advanced methods such as the evaluation of displacement vector orientations on tunnel sites in Austria showed that changing rock mass conditions ahead of the tunnel face can be indicated. The combination of such methods with new developed software for the prediction of displacements in a plane perpendicular to the tunnel axis (GeoFit®) allows the detection of deviations from ‘normal’ system behaviour in time. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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