한국지구물리탐사학회:학술대회논문집
- 2003.11a
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- Pages.255-261
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- 2003
Smart monitoring analysis system for tunnels in heterogeneous rock mass
- Kim, Chang-Yong (Korea Institute of Construction Technology) ;
- Hong, Sung-Wan (Korea Institute of Construction Technology) ;
- Bae, Gyu-Jin (Korea Institute of Construction Technology) ;
- Kim, Kwang-Yeom (Korea Institute of Construction Technology) ;
- Schubert, Wulf (TU-Graz)
- Published : 2003.11.01
Abstract
Tunnelling in poor and heterogeneous ground is a difficult task. Even with a good geological investigation, uncertainties with respect to the local rock mass structure will remain. Especially for such conditions, a reliable short-term prediction of the conditions ahead and outside the tunnel profile are of paramount importance for the choice of appropriate excavation and support methods. The information contained in the absolute displacement monitoring data allows a comprehensive evaluation of the displacements and the determination of the behaviour and influence of an anisotropic rock mass. Case histories and with numerical simulations show, that changes in the displacement vector orientation can indicate changing rock mass conditions ahead of the tunnel face (Schubert & Budil 1995, Steindorfer & Schubert 1997). Further research has been conducted to quantify the influence of weak zones on stresses and displacements (Grossauer 2001). Sellner (2000) developed software, which allows predicting displacements (GeoFit
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