A Study on Convergency of Tunnel Displacement using Control Chart Method
Sung-Bin Yim, Sung-Kwon Kim, Yong-Seok Seo, Si-Hyun Park · The Journal of Engineering Geology · 2007
Tunnel deformation happens by excavation. After installation of support, tunnel is gradually stabilized over time. Effect of excavation on tunnel behavior decreases as increase of distance from face. If the time that the displacement converges by tunnel stabilization is estimated, processes after stabilization can be advanced and economic loss can be reduced. In this study, the distance of displacement convergent point from face in the tunnel constructed on sedimentary rock is estimated using control chart method. As the results of analysis using a control of chart, displacements in a sedimentary rock tunnel are converged within 100 m from each tunnel face.