Spring Bolt Mine Support
- -The main body of the spring bolt is a full thread bar bolt, with the top end coiled into a spring shape using steel wire.
- -The spring-shaped steel wire can thoroughly mix the resin.
- -Installation is quick and convenient, providing stable support for the rock strata.
Spring Bolt Mine Support Functions
Spring Bolt Mine Support is a kind of reinforcement support method used in surface engineering such as coal mine, slope, deep foundation pit of rock and soil and underground chamber construction such as tunnel and stope.Pole into the surface of the rock mass or cavern surrounding rock mass in the drilled holes in advance, to use its head, the special structure of the rod body and tail plate blend and stability of rock mass surrounding rock and suspension effect, effect of composite beams, reinforcement effect, in order to achieve the purpose of supporting.
Specially designed spring wire attached to the up-hole end ensures that
the resin components are thoroughly combined and distributed evenly.The
helix design helps center the bolt within the borehole during
installation.
Spring Bolt Mine Support Features & Advantages
Available in left-hand or right-hand thread.
Compared with other bars,thread ribs are higher,resin mixing is better,and anchoring effect is better.
Suitable for using with either resin cartridges or cement grout.
Provide the same tensile strength on the entire length.
Due to continuous thread on the entire length,the nut can be tightened upward at any place.
Available in black or hot dip galvanized.
Spring Bolt Mine Support Mechanical Properties
| Diameter | Yield Strength | Tensile Strength | Elongation A% | Mass Meter | Core Dia | Major Dia | |||||||
| Min | Typ. | Min | Typ. | Min | Typ. | ||||||||
| 20mm | 515 MPa | 162 kN | 560 MPa | 176 kN | 630 MPa | 198 kN | 710 MPa | 220 kN | 18% | 24% | 2.46KGS | 19.5mm | 22.5mm |
| 22mm | 525 MPa | 199 kN | 590 MPa | 224 kN | 652 MPa | 247 kN | 761 MPa | 289 kN | 18% | 24% | 2.98KGS | 21.2mm | 23.8mm |
| 25mm | 550 MPa | 269 kN | 610 MPa | 298 kN | 684 MPa | 335 kN | 798 MPa | 391 kN | 18% | 24% | 3.85KGS | 24.8mm | 28.5mm |
Spring Bolt Mine Support Bearing plate
Spring Bolt Mine Support Accessories
Domed nut, hex nut, anti-friction washer, domed ball
Spring Bolt Mine Support Length and Package
Bolts are packaged in bundles.
Bolt fittings, such as nuts, anti-friction washers, and domed balls, are fitted to rock bolts in the requested configuration.
Spring Bolt Mine Support Applications
Mines
Tunnels
Slopes
Places that need ground support
