Dynamic and Static Reserve Recharge Characteristics of a Dewatering Well Seepage from an Aquifer Bottom by Sand Tank Seepage Experiment

Table 1

Sand gradation results.

Sand size (mm)	<0.075	0.075~0.15	0.15~0.25	0.25~0.5	0.5 ~ 1	1 ~ 2	>2
The ratio of the size range (%)	0.42	0.34	2.68	28.33	26.57	15.84	25.82