TY - JOUR
T1 - Verifying discontinuous deformation analysis simulations of the jointed rock mass behavior of shallow twin mountain tunnels
AU - Do, Trong Nhan
AU - Wu, Jian Hong
N1 - Funding Information:
The authors greatly appreciate the kind assistance of all lab mates in Rock Laboratory at Civil Engineering Department, National Cheng Kung University, Tainan, Taiwan. In addition, the authors would like to thank the Ministry of Science and Technology of Taiwan for the financial support (Grant No.: MOST 105-2628-E-006-004-MY3; MOST 108-2625-M-006- 014-)
Funding Information:
The authors greatly appreciate the kind assistance of all lab mates in Rock Laboratory at Civil Engineering Department, National Cheng Kung University , Tainan, Taiwan. In addition, the authors would like to thank the Ministry of Science and Technology of Taiwan for the financial support (Grant No.: MOST 105-2628-E-006-004-MY3 ; MOST 108-2625-M-006- 014 -)
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/6
Y1 - 2020/6
N2 - This study extends discontinuous deformation analysis (DDA) to simulate the interactions of twin tunnels in a jointed rock mass. The ground subsidence and the rock stress distribution around the tunnels from the DDA simulation are compared to those from the trap-door model. Both the experimental and computational results show that the changing tunnel interactions in the jointed rock mass between the two tunnels are coincidently associated with the tunnel distance. In addition, the dip angle of the rock strata significantly affects the surface subsidence patterns and the stress distribution around the excavation zone. Therefore, the DDA method is a useful tool for describing the mechanical behavior of a jointed rock mass when a twin-tunnel is constructed in mountain terrain.
AB - This study extends discontinuous deformation analysis (DDA) to simulate the interactions of twin tunnels in a jointed rock mass. The ground subsidence and the rock stress distribution around the tunnels from the DDA simulation are compared to those from the trap-door model. Both the experimental and computational results show that the changing tunnel interactions in the jointed rock mass between the two tunnels are coincidently associated with the tunnel distance. In addition, the dip angle of the rock strata significantly affects the surface subsidence patterns and the stress distribution around the excavation zone. Therefore, the DDA method is a useful tool for describing the mechanical behavior of a jointed rock mass when a twin-tunnel is constructed in mountain terrain.
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U2 - 10.1016/j.ijrmms.2020.104322
DO - 10.1016/j.ijrmms.2020.104322
M3 - Article
AN - SCOPUS:85083309351
SN - 1365-1609
VL - 130
JO - International Journal of Rock Mechanics and Mining Sciences
JF - International Journal of Rock Mechanics and Mining Sciences
M1 - 104322
ER -