Strength Assessment of Broken Rock Postgrouting Reinforcement Based on Initial Broken Rock Quality and Grouting Quality

Table 3

Each group’s shear strength parameter.

Scheme number	Group number	Shear strength parameter		correlation coefficient
		/MPa
I	C07	2.150	1.147	0.9867
	C09	1.746	0.800	0.9815
	C11	1.539	0.573	0.9917
	C13	1.344	0.292	0.9819
II	OF	0.291	0.413	0.9884
	OM	0.634	0.504	0.9702
	OR	1.039	0.661	0.9850
III	F07	2.381	0.592	0.9945
	F09	1.930	0.540	0.9642
	F11	1.694	0.533	0.9857
	F13	1.625	0.513	0.9874
IV	M07	2.616	0.696	0.9958
	M09	2.140	0.658	0.9958
	M11	1.834	0.649	0.9865
	M13	1.782	0.623	0.9880
V	R07	2.759	0.864	0.9833
	R09	2.299	0.817	0.9862
	R11	1.999	0.809	0.9872
	R13	1.930	0.792	0.9697