Analysis of the Interaction Effects of Shield Structure Oblique Passing under an Existing Tunnel

The interaction mechanism between a two-lane shield tunnel and an existing during oblique underpass is matter of widespread concern in the engineering community, knowledge this area remains crude. In construction subway tunnels mountainous cities with huge topographical fluctuations, internal forces deformations are inevitable tunnels. To verify applicability technology empirical parameters to Guiyang area, systematic refined numerical analysis was conducted on passing under section Tao-Hua interval Metro Line 3. paper, accuracy simulation verified by comparing calculated results data measured field; settlement pattern that appeared above slurry hardening analyzed; forces, lateral deformation, torsional deformation caused excavation new obtained based results; finally, effect old different spatial intersection angles studied. show surface due diagonal obvious asymmetric characteristics. Additionally, experiences local irrecoverable maximum occurring at tunnels, angle has great influence vault arch bottom, which shows negative correlation.