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

Table 2

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

Serial number	Values by dial indicator (mm)	Measured drawing force (N)	Calculated shear stress (kPa)
1	3.17	0	0
2	3.17	115	9.151
3	3.2	158	12.573
4	3.31	149	11.857
5	3.51	230	18.303
6	3.62	209	16.632
7	3.75	207	16.473
8	3.88	196	15.597
9	3.97	210	16.711
10	4.07	200	15.915
11	4.11	188	14.961
12	4.11	177	14.085
13	4.11	227	18.064
14	4.11	220	17.507
15	4.11	217	17.268
16	4.11	213	16.950
17	4.11	210	16.711
18	4.11	205	16.313