Experimental Investigation of Water-Sand Mixed Fluid Initiation and Migration in Filling Fracture Network during Water Inrush

Table 4

Particle loss mass.

Number	Effective diameter/d10 (mm)	Dominant diameter/d60 (mm)	Max diameter of lost particle (mm)	Content of migration particle (%)	Loss mass (%)
FF6	0.16	6.07	0.6	26.56	20.00
FF7	0.25	6.07	0.6	26.56	17.78
FF8	0.16	5.04	0.6	26.56	18.87
FF9	0.16	6.07	0.6	26.56	14.10
FF10	0.16	6.07	0.6	26.56	15.31
FF11	—	—	0.6	26.56	16.53
FF12	—	—	0.3	26.56	19.02
FF13	—	—	0.15	26.56	21.25
FF14	—	—	0.075	26.56	24.12