Laboratory Model Test Research on Mechanical Characteristics of Anchor in Loess Tunnel under the Action of Pull-Out Load

Table 3

The measured test values and calculated value of shear stress (the third test).

Serial number	Values by dial indicator (mm)	Measured drawing force (N)	Calculated shear stress (kPa)
1	4.41	0	0
2	4.45	30	2.387
3	4.47	80	6.366
4	4.48	96	7.639
5	4.5	80	6.366
6	4.51	76	6.048
7	4.51	76	6.048
8	4.51	92	7.321
9	4.52	89	7.082
10	4.52	95	7.560
11	4.52	113	8.992
12	4.52	108	8.594
13	4.52	104	8.276
14	4.52	135	10.743
15	4.52	151	12.016
16	4.52	144	11.459
17	4.52	142	11.300
18	4.52	142	11.300