Optimization of Construction Process of Double Side Slope Method Used in Super Section Tunnel
Xingliang Jin, Bin Liang
Available Online April 2017.
- https://doi.org/10.2991/iceesd-17.2017.36How to use a DOI?
- shallow buried super section flat tunnel; surrounding rock stress; double side slope method; excavation step sequence optimization
- Taking Chongqing Metro Line 5 tunnel project as an engineering example, which is a shallow buried large section tunnel. The finite element numerical analysis software MIDAS-GTS was used to establish the three-dimensional finite element model of the tunnel. The analysis data was compared with the site monitoring data. The results show that the mechanical indexes of the super large cross section tunnel increase suddenly when the middle wall core soil were removed. This stage should strengthen the monitoring frequency. The data of ground surface settlement, vault settlement and the level convergence under three kinds of excavation step were compared. In the end, it was concluded that the "L" type excavation step is reasonable which the construction efficiency is increased and the construction cost is saved. This paper puts forward the reasonable steps of the construction of large span flat tunnel under the geological conditions of the project.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Xingliang Jin AU - Bin Liang PY - 2017/04 DA - 2017/04 TI - Optimization of Construction Process of Double Side Slope Method Used in Super Section Tunnel BT - 2017 6th International Conference on Energy, Environment and Sustainable Development (ICEESD 2017) PB - Atlantis Press SP - 189 EP - 192 SN - 2352-5401 UR - https://doi.org/10.2991/iceesd-17.2017.36 DO - https://doi.org/10.2991/iceesd-17.2017.36 ID - Jin2017/04 ER -