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Keywords: roof displacement
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Proceedings Papers

Paper presented at the ISRM International Symposium - 5th Asian Rock Mechanics Symposium, November 24–26, 2008
Paper Number: ISRM-ARMS5-2008-088
... for these purposes. It was suitable that the second tunnel would be excavated in advance, maintaining the face distance between each tunnel face of minimum 25 m. The numerical analysis indicates that the roof displacement and the convergence of the second tunnel are insignificant, and the maximum bending compressive...

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