Geological Composition and Structure of the Filling Zone and Its Water-Resisting Property Evaluation on the Top of Ordovician Limestone

Table 3

The clustering results of WFCM.

Clustering categories	Clustering center value					Area (km^2)
	Interbedded mudstone thickness ratio	Relative argillaceous content	Impermeable filling zone thickness	RQD	Faulting
Class 1	0.318	0.296	0.318	0.616	0.012	19.9
Class 2	0.132	0.201	0.313	0.640	0.015	10.1
Class 3	0.087	0.564	0.115	0.493	0.019	12.4