터널상부 지장물로 인한 저토피 철도터널에서의 역해석기법 활용성 연구

The urban tunneling site has mostly complicated and varied ground condition of rock, weathered soil, and alluvial soil with high water table and shallow top soil. As suggesting the case of changing the excavation method of the low depth railway tunnel under the covered structure of Wha-Gye river in section of 00 Rail Transit construction area. It was vertified that the load on tunnel supports was decreased and the deformation of ground around the tunnel was less occurred in case of obstacle(Sewer Box:covered structure) existed above low depth tunnel in mechanical aspect. When planning projects of urban rail tunnel in the simuliar condition, it is expected to use for optimum design and safe constuction as reference data and also to develop the technique of design and construction satisfing safety and economic efficiency from the back analysis of using practical measurments after the observation of tunnel face.