Abstract：
The buildings are dense on the groundsurface above middle section of Sanlian Tunnel whose depth is 90~102 m, which exhibited deformation and cracking on the tunnel’s constructing. Uesd by comprehensive geological investigation methods and means, colligated the geological condition presented by tunnel excavation, character of deformation and cracking of groundsurface buildings and the monitoring data of blasting vibrational wave velocity, the reasons for the deformation and cracking of the groundsurface buildings above the tunnel have been analysised as followed, the asymmetry sedimentation in part of soil layers induced by groundwater leaking on tunnel excavation, the ground subsidence and craze by the thixotropy of the soft soil in groundsurface groove produced by blasting vibration, the low quality of mostly local architecture and disrepair for long years, and blasting vibration and so on. Pertinent engineering measures actualized on following construction, which decrease the groundwater leakage, avoid collapse in tunnel and depress blasting vibration, have very well effect for the groundsurface buildings above tunnel.
CUI Jian-hong,TAO Yu-jing. The Analysis of Groundsurface Buildings’ Deformation and Cracking above Sanlian Tunnel[J]. Architecture Technology, 2016, 47(2): 154-.
