Long-Term Bearing Deformation Characteristics of Caved Gangue in Gob under Different Moisture Conditions

Table 3

Changes of mass fraction of caved gangue with different particle sizes before and after the testing.

Particle size	Mass fraction (%)
	Dry			Water-saturated
	Before testing	After testing	D-value	Before testing	After testing	D-value
0–5	0	5.25	5.25	0	5.85	5.85
5–10	5	7.46	2.46	5	8.09	3.09
10–15	10	10.21	0.21	10	10.43	0.43
15–20	20	20.08	0.08	20	20.25	0.25
20–25	30	26.81	-3.19	30	26.68	-3.32
25–30	20	16.35	-3.65	20	15.05	-4.95
30–35	10	9.02	-0.98	10	8.86	-1.14
35–40	5	4.82	-0.18	5	4.78	-0.22