Theoretical and Numerical Research on V-Cut Parameters and Auxiliary Cuthole Criterion in Tunnelling

<div>Cuthole arrangement in (a) grade III (arrangements of cutting holes in class III rocks) and (b) grade IV rocks (arrangements of cutting holes in class IV rocks).</div>

Advances in Materials Science and Engineering

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Figure 10

Figure 10: Theoretical and Numerical Research on V-Cut Parameters and Auxiliary Cuthole Criterion in Tunnelling 