Analysis of interaction between tunnels in soft ground by 3D numerical modeling

作者：Chakeri Hamid; Hasanpour Rohola; Hindistan Mehmet Ali^*; Unver Bahtiyar

来源：Bulletin of Engineering Geology and the Environment, 2011, 70(3): 439-448.

DOI：10.1007/s10064-010-0333-8

• 3D numerical modeling
• Tunnel interaction
• Surface settlement
• FLAC3D

Tunnels are increasingly being excavated in soft ground conditions when services are required in urban environments, and it is now common to have tunnels crossing at various elevations. As the tunnel excavations are undertaken at different levels, there will be an interaction which can have a significant influence on stress distributions and consequently deformations within the tunnels and surface settlement. As multi-layer tunnelling is a three dimensional phenomenon in nature, 3D numerical solutions must be utilized for perpendicularly crossing tunnels at various levels. This paper reports the investigations into the changes in stress distribution, deformations and surface settlements which may be expected when the twin Tohid Tunnels pass beneath the Line 4 metro tunnel in Tehran.

• 出版日期2011-8