Effect of Bedding Structure on the Energy Dissipation Characteristics of Dynamic Tensile Fracture for Water-Saturated Coal
Table 3
Energy dissipation parameters of air-dry and water-saturated coal specimens.
Water content
(°)
(m·s-1)
(J·m-3)
(J)
(J·m-3)
Dry
0
3.213
8137.23
0.042
863.16
0.1061
2.695
2932.36
0.011
229.32
0.0782
3.565
8588.66
0.045
914.02
0.1064
2.707
2242.11
0.009
184.26
0.0822
22.5
2.378
3689.26
0.012
246.45
0.0668
2.518
5781.86
0.024
499.22
0.0863
2.565
4790.71
0.016
338.42
0.0706
2.972
5609.13
0.025
509.45
0.0908
3.803
6916.84
0.038
768.85
0.1112
45
2.624
4796.75
0.017
355.85
0.0742
3.146
7126.37
0.039
788.59
0.1107
3.226
7496.42
0.040
813.23
0.1085
67.5
3.286
3465.82
0.018
385.75
0.1113
4.008
6885.24
0.038
795.93
0.1156
3.332
3573.23
0.021
438.17
0.1226
2.125
5712.75
0.023
461.78
0.0808
2.689
5387.65
0.022
465.73
0.0887
90
3.843
7132.59
0.041
838.88
0.1176
2.97
2970.66
0.013
265.34
0.0893
2.779
8090.98
0.036
747.61
0.0924
3.018
2273.96
0.010
207.83
0.0914
2.336
1966.50
0.007
139.82
0.0711
Saturated
0
2.112
2684.75
0.009
190.35
0.0709
1.58
3365.76
0.011
226.52
0.0673
3.221
5051.66
0.026
542.48
0.1074
2.754
5276.99
0.021
438.16
0.0831
2.851
4614.83
0.019
450.41
0.0850
22.5
2.529
10055.36
0.044
907.12
0.0902
3.233
8140.09
0.029
598.02
0.0735
2.573
9821.71
0.044
891.06
0.0907
2.476
4127.82
0.016
321.21
0.0778
45
3.132
9910.17
0.055
1141.26
0.1152
3.308
9611.25
0.058
1217.89
0.1267
2.915
5429.54
0.029
597.93
0.1101
67.5
3.363
7578.40
0.047
990.95
0.1308
3.435
3472.94
0.026
545.56
0.1571
2.878
7965.75
0.035
713.34
0.0896
90
3.041
9484.67
0.048
997.61
0.1052
3.09
3600.11
0.019
398.34
0.1106
2.347
5490.83
0.021
450.85
0.0821
2.084
3723.11
0.013
281.84
0.0751
Note: : bedding angle; : impact velocity; : density of total absorbed energy; : total dissipated energy; : density of total dissipated energy; : damage variables.
