Table 5 The test results by different anchor rod length
Number | Destruction mode (kN) | Fracture load (kN) | Average (kN) |
|---|---|---|---|
L8-1 | GF deformation (2.3) → slurry cracking (6.8) → GF pull out(7.8) | 7.8 | 7.95 |
L8-2 | GF deformation (1.6) → slurry cracking (5.2) → GF pull out(5.4) | 5.4* | |
L8-3 | GF deformation (2.2) → slurry cracking (7.3) → GF pull out(8.1) | 8.1 | |
L12-1 | GF deformation (2.3) → slurry cracking (7.6) → GF pull out(11.5) | 11.5 | 10.63 |
L12-2 | GF deformation (2.4) → slurry cracking (7.8) → GF pull out(9.8) | 9.8 | |
L12-3 | GF deformation (2.0) → slurry cracking (8.1) → GF pull out(10.6) | 10.6 | |
L15-1 | GF deformation (2.3) → slurry cracking (6.5) → slurry crushing(11.2) → GF pull out(15.5) | 15.5 | 16.47 |
L15-2 | GF deformation (2.5) → slurry cracking (7.1) → slurry crushing (13.6) → GF pull out (17.1) | 17.1 | |
L15-3 | GF deformation (2.3) → slurry cracking (7.5) → slurry crushing (12.8) → GF pull out (16.8) | 16.8 | |
L20-1 | GF deformation (2.3) → slurry cracking (7.5) → slurry crushing (12.3) → GF pull out(18.7) | 18.7 | 18.55 |
L20-2 | GF deformation (2.8) → slurry cracking (8.2) → slurry crushing (15.1) → GF pull out (15.6) | 15.6* | |
L20-3 | GF deformation (2.3) → slurry cracking (7.3) → slurry crushing (11.8) → GF pull out (18.4) | 18.4 | |
L30-1 | GF deformation (2.6) → slurry cracking (7.8) → slurry crushing (11.5) → GF fracture (19.8) | 19.8 | 19.83 |
L30-2 | GF deformation (2.4) → slurry cracking (7.5) → slurry crushing (13.2) → GF fracture (19.6) | 19.6 | |
L30-3 | GF deformation (2.2) → slurry cracking (8.2) → slurry crushing (12.8) → GF fracture (20.1) | 20.1 |