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Bulbed Cable Bolt

Bulbed Cable Bolt

Description

  • Specification

Cable bolt

Cable bolt is made of grade 1860Mpa steel wires,which can be made into plain cable bolt and bulbed cable bolt.

Functions

Cable bolt could provide higher tensile strength,anti-shearing capacity and incomparable bending capacity,

and could prevent the lateral movement of strata.

Features&Advantages

  • Plain cable bolt and bulb cable bolt
  • At the top of the bulb cable bolt, three bulbs to reinforce resin mixing, achieve point anchorage and pretension
  • The bulbs can be modified in frequency and diameter based on customer’s request, the diameter is 21mm~38mm
  • Plain or bulbs options available,bulbs available at either 0.5 m or 1 m spacing
  • Available in single strand or twin strand
  • Fish hooks fitted to top of cables for retention prior to grouting
  • Resin could be applied for immediate point anchorage and grout for permanent support

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(mm2) 140 191 220 285 313
Steel Grade(Mpa) 1860 1860 1860 1860 1860
Tensile strength(kN) 260(26.5T) 355(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

Accessories

  • Fish Hooks
  • Expansion shell
  • Barrel&wedge
  • Grouting tube
  • Breathing tube
  • Bearing plate

Application

  • Mines
  • Tunnels
  • Slopes
  • Places where need ground support

Length & Package

  • Length:500mm to 6200mm in pieces or in coils
  • Package:20 pcs each bundle
  • As customer’s requirement

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 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.
  • Insert the cable bolt and seal the hole to eliminate lose of grout when pumping.
  • 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.

  • Cable bolt can be tensioned after the grout has cured.