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

Table 2

Normal stress and peak shear strength.

Scheme number	Group number	Stress/MPa
		Normal or Shear	Test block number
			1	2	3	4	5
I	C07		1.333	2.444	3.111	3.778	4.444
			3.504	5.182	5.782	6.493	7.124
	C09		1.111	1.778	2.444	3.111	3.778
			2.562	3.131	3.891	4.257	4.666
	C11		0.889	1.556	2.222	2.889	3.556
			2.049	2.486	2.753	3.142	3.631
	C13		0.889	1.332	1.776	2.220	2.664
			1.637	1.703	1.851	1.977	2.149
II	OF		0.889	1.332	1.776	2.220	2.664
			0.650	0.863	1.030	1.157	1.419
	OM		0.889	1.332	1.776	2.220	2.664
			1.006	1.367	1.588	1.760	1.929
	OR		0.889	1.332	1.776	2.220	2.664
			1.677	1.851	2.180	2.573	2.782
III	F07		1.111	2.222	3.333	4.444	5.555
			2.978	3.690	4.480	5.017	5.603
	F09		1.111	2.000	2.889	3.778	4.444
			2.553	2.880	3.697	3.848	4.352
	F11		0.889	1.556	2.222	2.889	3.556
			2.153	2.477	2.953	3.275	3.530
	F13		0.889	1.333	1.778	2.222	2.667
			2.045	2.314	2.603	2.757	2.963
IV	M07		1.333	2.222	3.111	4.000	4.889
			3.512	4.233	4.746	5.384	6.032
	M09		0.888	1.332	2.222	3.111	4.000
			2.688	3.067	3.557	4.256	4.736
	M11		0.888	1.776	2.664	3.552	4.440
			2.319	3.007	3.669	4.236	4.588
	M13		0.667	1.334	2.222	2.889	3.556
			2.220	2.575	3.108	3.735	3.923
V	R07		1.778	2.667	4.000	5.333	6.667
			4.438	5.034	6.140	7.074	8.769
	R09		1.333	2.222	3.111	4.000	4.889
			3.538	3.958	4.876	5.475	6.433
	R11		1.333	1.778	2.222	3.111	4.000
			3.003	3.516	3.879	4.382	5.285
	R13		1.556	2.000	2.444	2.889	3.333
			3.083	3.366	4.035	4.264	4.488