Seepage Grouting Mechanism for Foundations in Goaf Sites considering Diffusion Paths

Table 1

Design parameters of cement slurry.

Composite material	Water-cement ratio	Grouting quantity (ml)	Grouting pressure	Grouting duration (t/s)
1	0.80	2026	10.19	28.3
2	1.00	2051	6.12	21.7