Table 6 Pullout test results of different borehole depths in rock tunnel.

From: Anchorage performance of a new rebar bolt under different surrounding rock strength and borehole depth

Depth (mm)

Peak force (kN)

Failure mode

New bolt

Right threaded bolt

800

142.2

112.5

Resin failure

1200

148.0

115.5

2000

162.9

125.3

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