Quantitative Identification of the Water Resistance Capacity of Composite Strata in Mining Coal Seam Floors

Table 8

Objective weight from the grey correlation analysis method.

Indicators	Thickness ratio of plastic brittle rock	Core recovery rate	Thickness of effective aquiclude	Fault factor values	Composite compressive strength	Equivalent water resistance coefficient
Objective weight	0.1366	0.1616	0.1617	0.1529	0.1601	0.2271