List of products by author: Tadashi Okabe

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  Main tunnel behaviour after widening excavation due to the drift's position

  Abstract: The drift advancing method was applied under extreme weak ground condition for construction of the tunnel with large section. From the actual measurement results, the convergence and the crown settlement after widening excavation of the main tunnel are generally larger than those in the section without the drift. When the drift advancing method is adopted, it is often expected to have the...

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