Shock and Vibration / 2020 / Article / Tab 2

Research Article

Study on Creep Characteristics and Constitutive Relation of Fractured Rock Mass

Table 2

Triaxial unloading creep test data of prefabricated cracked coal samples.

Numberσ1 (MPa)σ2 (MPa)εi1 (%)εi3 (%) (%)εc1 (%)εc3 (%) (%)

A0045101.6820.6150.4520.0800.0110.058
83.4441.2480.9480.0850.0160.054
65.2111.9001.4110.0890.0270.035
46.9822.6051.7730.0950.0320.031
28.7593.3632.032

A3040101.7930.6440.5060.1020.0200.062
83.6901.3610.9680.1110.0220.067
65.5952.1511.2930.1210.0290.064
47.5103.0431.4240.1370.0340.069
29.4694.0341.401

A4535101.9700.6990.5720.1190.0190.081
84.1291.4661.1980.1310.0380.055
66.2992.2921.7160.1420.083−0.023
48.4873.2042.079

A6033102.0840.7570.5700.1880.0120.164
84.2861.5341.2170.1960.0610.073
66.5012.3801.7410.2090.0960.016
48.7513.3092.134

σ1 and σ3 are the axial pressure and confining pressure; εi1, εi3, and are the axial, lateral, and volumetric instantaneous strain increments, respectively; εc1, εc3, and are the axial, lateral, and volumetric creep strain increments, respectively.

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