Study on Impact Damage and Energy Dissipation of Coal Rock Exposed to High Temperatures

Table 2

The variation of energy with temperature during the experimental process.

T/°C	Sample number	Incident energy EI/J	Reflected energy ER/J	Transmitted energy ET/J	Absorbed energy EA/J	SEA /J·cm^−3
25; (normal temperature)	A1	38.77	25.28	10.37	3.12	0.0406
	A3	43.52	28.30	11.79	3.43	0.0438
	A4	39.86	25.88	10.83	3.15	0.0384
	A5	46.65	30.18	12.57	3.90	0.0491
	Average value	42.20	27.41	11.39	3.40	0.0430
100	B1	40.12	28.86	5.42	5.84	0.0710
	B2	39.66	28.58	5.26	5.82	0.0713
	B3	41.23	29.69	5.57	5.97	0.0687
	B6	38.15	27.51	5.23	5.41	0.0639
	Average value	39.79	28.66	5.37	5.76	0.0687
200	C2	38.78	29.51	3.59	5.68	0.0681
	C4	41.23	31.45	3.86	5.92	0.0709
	C5	39.69	30.16	3.92	5.61	0.0711
	C6	40.46	30.12	3.99	6.35	0.0780
	Average value	40.04	30.31	3.84	5.89	0.0720
300	D1	42.11	32.85	1.35	7.91	0.0957
	D2	39.76	31.23	1.17	7.36	0.0882
	D3	43.03	33.56	1.29	8.18	0.1016
	D5	38.46	30.44	1.07	6.95	0.0820
	Average value	40.84	32.02	1.22	7.60	0.0917
400	E1	43.43	34.76	1.08	7.59	0.0916
	E3	42.17	33.64	1.05	7.48	0.0923
	E4	41.88	33.51	1.04	7.33	0.0854
	E5	44.68	35.69	1.15	7.84	0.0938
	Average value	43.04	34.40	1.08	7.56	0.0907
500	F3	41.26	34.18	0.39	6.69	0.0828
	F4	43.15	35.83	0.47	6.85	0.0884
	F5	40.87	34.04	0.38	6.45	0.0756
	F6	42.80	35.35	0.44	7.01	0.0851
	Average value	42.02	34.85	0.42	6.75	0.0828