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ASME Press Select Proceedings
Geological Engineering: Proceedings of the 1st International Conference (ICGE 2007)
Editor
Baosong Ma
Baosong Ma
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ISBN:
9780791802922
No. of Pages:
1760
Publisher:
ASME Press
Publication date:
2009

This paper reports two collapse cases during the course of driving in Kaiserau Tunnel in Germany. This case history brings out several important aspects for tunnel driving. First, it shows the importance of interpretation of measurements and the role of numerical analysis in decision making process. Second, it shows the limitation of the observational method for processes involving spontaneous loss of stability. Moderate or even small deformation does not necessarily mean that sufficient safety is available.

Abstract
Introduction
Geological Conditions
Design and Control Measures
Tunnel Collapse
Lining Invert Break
Conclusions
Acknowledgements
References
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