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Bulb Anchor Cable Bolt is made of grade 1860Mpa steel wires,which can be made into plain cable bolt and bulbed cable bolt.
Bulb Anchor Cable Bolt Functions
Bulb Anchor Cable Bolt could provide higher tensile strength,anti-shearing capacity and incomparable bending capacity,
and could prevent the lateral movement of strata.
Bulb Anchor Cable Bolt Features&Advantages
Plain cable bolt and bulb cable bolt
The bulbs can be modified in frequency and diameter based on customer’s request, the diameter is 21mm~38mm
At the top of the Bulb Anchor Cable Bolt, three bulbs to reinforce resin mixing, achieve point anchorage and pretension
Fish hooks fitted to top of cables for retention prior to grouting
Available in single strand or twin strand
Plain or bulbs options available,bulbs available at either 0.5 m or 1 m spacing
Resin could be applied for immediate point anchorage and grout for permanent suppor
Bulb Anchor Cable Bolt Mechanical Properties
| Item No. | TRCB152 | TRCB178 | TRCB189 | TRCB216 | TRCB218 |
| Diameter(mm) | 15.2 | 17.8 | 18.9 | 21.6 | 21.8 |
| Strands | 1*7 | 1*7 | 1*7 | 1*7 | 1*19 |
| Mass per meter(kg) | 1.1 | 1.5 | 1.73 | 2.24 | 2.48 |
| Cross sectional area(m㎡) | 140 | 191 | 220 | 285 | 313 |
| Steel Grade(Mpa) | 1860 | 1860 | 1860 | 1860 | 1860 |
| Tensile strength(kN) | 260(26.5T) | 335(36.2T) | 409(41.7T) | 530(54.1T) | 583(59.5T) |
| Min 0.2% extension under load(kN) | 229 | 311 | 360 | 466 | 513 |
| Min.Elongation(%) | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 |
Bulb Anchor Cable Bolt Accessories
Fish Hooks Breathing tube Grouting tube
Expansion shell Bearing plate
Bulb Anchor Cable Bolt Application
Mines
Tunnels
Slopes
Places where need ground support
Bulb Anchor Cable Bolt Length & Package
Length:500mm to 6200mm in pieces or in coils
Package:20 pcs each bundle
As customer’s requirement
Bulb Anchor Cable Bolt How to work
The nature of the ground must be evaluated.
Drill a hole in the area according to bolt diameter, bolt length. The length of hole is 200mm to 500mm shorter than the cable bolt.
Attach a breather tube to the full length of the bolt. Breather tube protrudes about two meters from the hole.
Attach about one meter of grout tube to the end of the cable bolt with sufficient tail provided to connect to the pump.
Connect the grout tube to pump and place the breather tube into a container of water when pumping start. We will seethat in the water container that air bubbles will exhaust from the breather tube, when the hole is full of grout, air bubbles will disappear.
Insert the cable bolt and seal the hole to eliminate lose of grout when pumping.
Bulb Anchor Cable Bolt can be tensioned after the grout has cured.
