Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2002.03a
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- Pages.717-724
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- 2002
A study on the 3-dimensional behavior of shaft by the RBM reaming
RBM 굴착에 따른 수직구의 3차원적 거동 연구
Abstract
To investigate the behavior of air-shaft and existing tunnel by excavating the small-diameter shaft into the existing tunnel, prototype air-shaft was constructed and analyzed in this study. Geotechnical characterization was conducted by boring and rock cores obtained were tested in the laboratory. Field monitoring including radial and tangential stresses and displacements was conducted with the 3-dimensional numerical analysis of prototype air-shaft. Results of field monitoring were compared with the numerical results. The results showed that maximum displacement of 2.11mm and maximum tangential stress of 54.0 kg/