Effect of Seepage Velocity on Formation of Shaft Frozen Wall in Loose Aquifer

Table 4

Comparison of midstream peak surface seepage velocity after 150 d of freezing.

Initial seepage velocity (m/d)	Maximum seepage velocity (m/d)	Velocity ratio (1)
1	1.52	1.52
2	3.21	1.61
3	5.02	1.67
4	7.43	1.86
5	9.47	1.89
6	11.97	2.00
7	16.12	2.02
8	16.28	2.04
9	21.79	2.42