Dynamic Rock Bolts

Sandvik Dynamic Rock Bolts

Our MD/MDX bolts are designed for underground hard rock mines. They are specifically designed for weaker rock conditions and dynamic loads and are quick and easy to install with both Jumbo and Rock bolters. Setting the new benchmark for ground support for seismic ground conditions, it is achieving new hights in impact absorption. Your bolt of choice for safer mining.

DYNAMIC ROCK BOLTS - PRODUCT OFFERING

D47 MD BOLT

slide d47 md bolt.png

Application:

“Static support”

  • Stoping, development, production areas
  • For swelling, squeezing conditions
  • Jumbo/Rock Bolter installation

Benefit:

  • Control of gradual release of energy from surrounding rock like swelling and squeezing
  • Quick installation time, one pass, no resin/grout
  • Speeding up development cycle

Value delivered:

  • Safer working conditions
  • Continued mining
  • Productivity increase
Bolt Diameter Bolt Length Wedge Expansion Bolt Weight
47 mm 3.0 m 52 mm (max) 16.5 kg
47 mm 2.4 m 52 mm (max) 13.2 kg
47 mm 2.1 m 52 mm (max) 12 kg

D47 MDX BOLT

slide d47 mdx bolt.png

Application:

“Dynamic support”

  • Stoping, development, production areas
  • For deep mining and seismic conditions
  • Jumbo/Rock Bolter installation

Benefit:

  • Control of sudden & violent release of energy from surrounding rock
  • Withstands 30 kJ impact, with only 153 mm displacement
  • Speeding up development cycle

Value delivered:

  • Safer work conditions
  • Continued mining
  • Productivity increase
Bolt Diameter Bolt Length Wedge Expansion Bolt Weight
47 mm 4.0 m 60 mm (max) 20.5 kg
47 mm 3.8 m 60 mm (max) 19.4 kg
47 mm 3.0 m 60 mm (max) 15.4 kg
47 mm 2.4 m 60 mm (max) 12.3 kg
47 mm 2.1 m 60 mm (max) 10.9 kg

D39 MDX BOLT

slide d39 mdx bolt.png

Application:

“Dynamic support”

  • Stoping, development, production areas
  • For deep mining and seismic conditions
  • Jumbo/Rock Bolter installation
  • Suit Macleans Rigs and Canadian market

Benefit:

  • Control of sudden and violent release of energy from surrounding rock
  • Withstand 26 kJ impact, with only 153 mm displacement
  • Speeding up development cycle

Value delivered:

  • Safer work conditions
  • Continued mining
  • Productivity increase
Bolt Diameter Bolt Length Wedge Expansion Bolt Weight
39 mm 3.0 m 47 mm (max) 14.1 kg
39 mm 2.4 m 47 mm (max) 11.1 kg
39 mm 2.1 m 47 mm (max) 9.9 kg

The MDX Bolt from Sandvik is a rock bolt designed for reliable ground support in variable ground conditions, including areas of seismic activity.