Mesoscopic Freeze-Thaw Damage Evolution Characteristics of Fractured Sandstone at Different Saturations

Table 4

Pore and throat parameters.

Sample number	Freeze-thaw times	Pore		Number of pores	Throat		Number of throats
		Average equivalent radius (μm)	Maximum equivalent radius (μm)		Maximum equivalent radius (μm)	Maximum length of the throat (μm)
A	0	39.66	302.56	38925	116.75	1428.94	6150
	30	39.73	290.46	39436	122.26	1388.36	6280
	60	39.84	283.38	40100	143.14	1317.15	6477
B	0	39.71	270.80	39640	112.84	1480.90	6197
	30	39.23	275.19	40445	120.42	1446.64	6488
	60	38.73	280.69	41500	146.65	1385.61	6796
C	0	39.95	326.01	39792	122.92	1306.66	6371
	30	39.68	317.53	40088	138.78	1298.02	6859
	60	39.39	302.69	40475	183.92	1286.62	7467
D	0	38.01	292.92	43447	114.69	1603.53	5573
	30	38.49	284.66	41724	115.62	1596.67	6897
	60	40.00	271.80	39828	117.37	1586.37	8108
E	0	39.62	290.17	40207	138.50	1373.01	5820
	30	39.97	287.68	39287	130.90	1386.90	7434
	60	40.45	281.23	38325	122.40	1411.53	8528