Study on Prediction Model of Mechanical Parameters of Rock Frozen-Thawed Damage based on NMR Technology

Table 2

Summary of PLSR and PCR model parameters of peak stress, peak strain, and elastic modulus of frozen-thawed rocks.

Model	Mechanical parameters	RMSEC (%)	RMSEV (%)	RPD
PLSR	Peak stress	2.693	3.085	10.150
	Peak strain	0.028	0.033	1129.735
	Modulus of elasticity	0.209	0.439	608.836
PCR	Peak stress	2.695	3.086	86.694
	Peak strain	0.028	0.033	84.533
	Modulus of elasticity	0.266	0.451	6.122