A field case study on construction of underground passageway with non-open excavation method

摘要

In this study, the construction process of non-open excavation cases using DSM and TRCMrnand the field monitoring during construction stage are introduced and the applicability and the stability of thernapplied method are reviewed. The problems occurred in the fields are drawn out and the settlement profiles of therntunnels during the construction stages are analyzed using the field monitoring results. Although both methods arernapplied successfully in the site, it was recognized that some complementary measures are necessary to preventrnthe settlement in soft clay layers. In the future, the usage of non-open methods will be more expanded at thernurban areas. The findings in this study would be a good reference for underground passage way installation.