Table 1 Energy variation versus strain rate in coal sample destruction.

From: An analysis of impact load and fragmentation dimension to explore energy dissipation patterns in coal crushing

Coal sample type

No

Average incident velocity/(m/s)

Strain rate \(\dot{\varepsilon }/s^{ - 1}\)

Mean value of incident energy/J

Mean value of reflected energy/J

Mean value of transmissive energy/J

Mean value of breaking work/J

Burst-prone coal sample

X-1

6.31

87.76

73.65

62.56

1.26

9.83

X-2

8.07

94.32

92.45

70.05

1.42

20.68

X-3

8.71

115.17

111.73

84.21

1.61

25.91

X-4

9.72

125.26

134.28

90.78

1.85

41.65

X-5

10.81

146.67

226.47

166.02

1.96

58.49

X-6

11.64

168.83

269.56

184.97

2.15

82.45

Non-burst-prone coal sample

Y-1

6.39

67.43

41.74

35.44

0.85

5.45

Y-2

7.97

80.37

63.51

53.12

0.94

9.45

Y-3

8.77

124.45

176.38

127.32

1.13

47.93

Y-4

9.75

139.39

241.45

183.10

1.26

57.09

Y-5

10.87

160.27

284.37

213.98

1.37

69.42

Y-6

11.7

220.28

471.43

392.05

1.48

77.90

Back to article page