Experimental Investigation on Seepage Stability of Filling Material of Karst Collapse Pillar in Mining Engineering

Table 3

The fitting coefficients in the relationship between initial permeability and initial porosity.

Specimen	a	b	Correlation coefficient
With clay	0.1418	26.98	0.9975
With gypsum	0.3532	15.76	0.9566
With cement	0.2497	16.83	0.9276