Open AccessNumerical Study on Karst Treatment Technology of Wuhan Metro Line 6
Author(s) -
Hongwu Xu,
Changfu Xiao,
Wenli Liu,
Zuo Yong-zhe,
Chao-Qun Wei
Publication year - 2020
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 - 10.1088/1755-1315/571/1/012090
Subject(s) - karst , settlement (finance) , geotechnical engineering , research object , deformation (meteorology) , reinforcement , sinkhole , geology , jet (fluid) , structural engineering , engineering , computer science , geography , paleontology , oceanography , regional science , aerospace engineering , world wide web , payment
Taking Wuhan Metro Line 6 karst crossing area as the research object, combined with on-site survey data, a reasonable karst treatment technical plan is proposed. The finite difference numerical calculation method was used to carry out numerical calculation research on the treatment effect of karst treatment technology in the study area. The research results show that after grouting reinforcement, the maximum settlement of tunnel segments is 19.5mm, which is 73% less than before reinforcement, and the treatment effect is better. The lining deformation is within the allowable deformation value after the reinforcement of the three rows of jet grouting piles. The maximum value of the stress of the jet grouting piles is lower than the design value of the shear strength of the high jetting walls, indicating that the treatment technology can play a good supporting role when completely collapsed Without destruction.