Indexed by:
Abstract:
In order to evaluate the tunneling performance of full-face tunnel boring machine(TBM) in complex rock environments, a full-face TBM tunneling prediction model based on numerical simulation was proposed. Firstly, the 4D-LSM and DDA coupled model was used to numerically reproduce the TBM tunneling tests of engineering-scale intact rock mass and jointed rock mass. The mechanical response of the cutterhead and the failure characteristics of the rock mass during the tunneling process of the full-face TBM were analyzed. Secondly, the effects of joint spacing, joint orientation, uniaxial compressive strength and brittleness index on the boreability index were investigated. Finally, a single neuron was introduced to revise the numerical simulation prediction model. The comparative analysis was conducted with rock mass characteristic model, which verified the applicability of the full-face TBM tunneling prediction model based on numerical simulation. The results show that the tunneling efficiency of TBM is higher in rock mass with low strength, high brittleness and developed joints. The angle between joints and the tunneling direction of TBM is 60° to 75°, which is most conducive to the operation of TBM. TBM tunneling performance prediction model based on numerical simulation provides an economical and flexible method for evaluating TBM construction performance in complex environments. © 2023 Central South University of Technology. All rights reserved.
Keyword:
Reprint Author's Address:
Email:
Source :
Journal of Central South University (Science and Technology)
ISSN: 1672-7207
Year: 2023
Issue: 3
Volume: 54
Page: 984-997
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count: 4
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 7
Affiliated Colleges: