Open AccessAnalysis on construction deformation characteristics of Da-Puling tunnel by monitoring measurement
Author(s) -
Hewen Liu,
WU Wen-jia
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/669/1/012019
Subject(s) - deformation monitoring , deformation (meteorology) , materials science , composite material
Tunnel monitoring and measurement is the guarantee of tunnel construction safety and implementation of dynamic parameter design; relying on the surface settlement, vault settlement and convergence deformation in the tunnel during the construction of Da-Puling tunnel on Guangxi expressway, based on the monitoring data, the stress situation and deformation characteristics of the tunnel are analyzed; the results show that the construction parameters of Da-Puling tunnel are basically reasonable, and the portal section is the key to the control of the whole construction parameters, the settlement of the tunnel vault in the V-Class surrounding rock of the portal section is about 4 times of the convergence deformation, which is mainly caused by the gravity of the overlying soil layer. The settlement of the tunnel vault in the IV-class surrounding rock is close to the convergence deformation, and the stress release deformation in the loose area of the tunnel surrounding rock is the main one. The monitoring and analysis in the construction process provides reliable data for design and construction in time, and ensures the smooth progress of tunnel construction.