Scheme

Top bolt

Side bolt

Top anchor rope

Scheme 1

0

0

0

Scheme 2

6Φ20 × L2000 mm rebar bolt, row spacing 800 × 1000 mm

3Φ20 × L2000 mm rebar bolt, row spacing 1200 × 1000 mm

3Φ21.8 × L5300 mm anchor rope, row spacing 1600 × 1000 mm

Scheme 3

6Φ20 × L2200 mm rebar bolt, row spacing 800 × 1000 mm

3Φ20 × L2200 mm rebar bolt, row spacing 1200 × 1000 mm

3Φ21.8 × L6300 mm anchor rope, row spacing 1600 × 1000 mm

Scheme 4

6Φ20 × L2400 mm rebar bolt, row spacing 800 × 1000 mm

3Φ20 × L2400 mm rebar bolt, row spacing 1200 × 1000 mm

4Φ21.8 × L7300 mm anchor rope, row spacing 1200 × 1000 mm