근접 및 동시시공에 따른 터널 안정성 확보방안

Working design, but when applied to the Carinthian Cut-and-Cover Method, due to a problem such as the completion and permission was more than 11 months to plan construction period. Cut with the concurrent construction of NATM for site renovation plan was established to comply with the standard construction period. Depending on the concurrent construction was estimated through a reasonable depth proximity evaluation and preparation analysis. Stability analysis were met through the tolerance of such tunnel displacement member force, planning of measurement was established for improved stability during construction.