Study on the Interaction between Low-Viscosity High-Permeability Pregrouting Sealing Material and Coal and Its Application

Table 1

Comparison of effective consolidation distances of materials in coal.

Indexes	Material type	Section 1 (mm)	Section 2 (mm)	Section 3 (mm)	Section 4	Section 5 (mm)	Average (mm)
Effective consolidation distance	Polyurethane	22	21	22	20	20	21
	New material	29	27	30	28	33	29.4