Application of lifting monitoring in process of consolidation grouting

Based on the lifting monitoring of consolidation grouting process of the rehabilitation project of No.2 flood discharge and sediment diversion hole of Zipingpu Hydropower Station due to earthquake damage,the layout of lifting observation points,installation of lifting monitoring devices and process control of lifting monitoring were introduced.The factors for the lifting deformation and the characteristics of the affected area of lifting caused by consolidation grouting,which decreased with the increase of the distance,were analyzed.The existing problems in the lifting monitoring devices were put forward.