Development and Application of Fluid-Solid Coupling Similar Materials in Discharge Test of Old Goaf Water

Table 1

Experimental proportioning scheme.

Factor
Level	Cement content (%)	Polyurethane content (%)
1	2	2	4	6	8	10
2	4	2	4	6	8	10
3	6	2	4	6	8	10
4	8	2	4	6	8	10
5	10	2	4	6	8	10