Open AccessStudy on Effect of Late Tunnels on Deformation of Early Tunnel in Three Small Net Distance Tunnels
Author(s) -
Peng Jiao,
Linjian Ma,
Yongzhen Wu,
Yan Liu
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/267/4/042099
Subject(s) - deformation (meteorology) , settlement (finance) , arch , shield , quantum tunnelling , geotechnical engineering , line (geometry) , geology , track (disk drive) , structural engineering , engineering , materials science , geometry , computer science , mathematics , mechanical engineering , petrology , oceanography , optoelectronics , world wide web , payment
This paper is based on the tunnels construction in small net distance in Jinan Rail Transit Line R3. The deformation of early mining tunnel when double-line shield tunneling under different net distance conditions is simulated. The results show that the late shield tunneling will cause the clearance convergence, vault settlement and inverted arch uplift of the early mining tunnel to further deformation. When the distance is 0.8 times of the tunnel diameter, reinforcement measures are needed.