Research Article
Study of Mechanical Property of Rock under Uniaxial Cyclic Loading and Unloading
Table 2
Elasticity modulus of loading and unloading (GPa).
| | Group A | Group B | Group C | Group D |
| D1 | 6.80 | 6.40 | 8.36 | 7.58 | U2 | 9.43 | 8.79 | 9.94 | 9.76 | D3 | 9.82 | 9.81 | 11.11 | 10.44 | U4 | 11.90 | 11.63 | 12.82 | 12.25 | D5 | 12.43 | 12.55 | 13.51 | 12.83 | U6 | 14.32 | 14.05 | 15.54 | 14.76 | D7 | 14.31 | 14.39 | 15.38 | 14.58 | U8 | 16.33 | 16.12 | 17.22 | 16.50 | D9 | 16.01 | 16.05 | 16.72 | 16.12 | U10 | 17.95 | 17.87 | 18.78 | 18.09 | D11 | 17.44 | 17.37 | 18.07 | 17.35 | U12 | 19.40 | 19.20 | 20.26 | 19.20 | D13 | 18.65 | 18.70 | 19.34 | 18.50 | U14 | 20.16 | 20.33 | 21.10 | 20.06 | D15 | 19.55 | 19.54 | 20.28 | 19.35 | U16 | 21.14 | 21.18 | 21.76 | 21.03 | D17 | 20.24 | 20.34 | 20.99 | 20.10 | U18 | 21.44 | 21.55 | 22.54 | 21.44 | D19 | 20.41 | 20.39 | 21.62 | 20.43 | U20 | — | — | 22.69 | 21.15 | D21 | — | — | 21.57 | 19.46 |
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