Roof Failure Mechanism and Control Technology of Large Section Open-Off Cut in Soft Rock Strata with Thin Thickness

Table 2

Anchorage force test results.

Anchor parameters (mm)	Hole depth (mm)	Anchorage force (t)
		1	2	Average
17.8 × 8000	7800	24.4	25.2	24.7
17.8 × 6500	6300	27.7	28.9	28.3