NLRM
Numerical Laboratory
of Rock Mechanics
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Three-dimensional coupled numerical modelling of full-scale TBM

rocking cutting tests

In this work, we established a virtual rock cutting test platform based on the mechanical rock breakage experimental platform of Beijing University of Technology (Gong et al., 2016). A series of numerical methods are embedded in the virtual platform, including Four-dimensional Lattice Spring Model (4D-LSM), Discontinuous Deformation Analysis (DDA), Numerical Manifold Method (NMM), etc. Based on the test platform and these numerical methods, we established a numerical model that is highly consistent with the lab full-scale rock linear cutting test to numerically reproduce the loading conditions of the physical test. The simulation results are in good agreement with the test results.


Reference:

Gong, Q., Du, X., Li, Z., Wang, Q., 2016. Development of a mechanical rock breakage experimental platform. Tunn. Undergr. Space Technol. 57, 129–136.

Yin, L., Miao, C., He, G., Dai, F., Gong, Q., 2016. Study on the influence of joint spacing on rock fragmentation under TBM cutter by linear cutting test. Tunn. Undergr. Space Technol. 57, 137–144.

Entacher, M., Lorenz, S., Galler, R., 2014a. Tunnel boring machine performance prediction with scaled rock cutting tests. Int. J. Rock Mech. Min. Sci. 70, 450–459.

Zhao, X.B., Yao, X.H., Gong, Q.M., Ma, H.S., Li, X.Z., 2015. Comparison study on rock crack pattern under a single normal and inclined disc cutter by linear cutting xperiments. Tunn. Undergr. Space Technol. 50, 479–489.


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