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 is 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 highs 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 Shell Expansion Bolt Weight
47mm 3.0m 52mm (max) 16.6kg
47mm 2.4m 52mm (max)

13.5kg

D47 MDX BOLT

slide d47 mdx bolt.png

Application:

“Dynamic support”

  • Stoping, Development, Production areas
  • For deep mining & seismic conditions,
  • Jumbo / Rock Bolter installation

Benefit:

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

Value Delivered:

  • Safer work conditions
  • Continued mining
  • Productivity increase
Bolt Diameter Bolt Length Shell Expansion Bolt Weight
47mm 3.0m 60mm (max) 15kg
47mm 2.4m 60mm (max)

12kg

D39 MDX BOLT

slide d39 mdx bolt.png

Application:

“Dynamic support”

  • Stoping, Development, Production areas
  • For deep mining & seismic conditions,
  • Jumbo / Rock Bolter installation
  • Suit Macleans Rigs, and Canadian Market

Benefit:

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

Value Delivered:

  • Safer work conditions
  • Continued mining
  • Productivity increase
Bolt Diameter Bolt Length Shell Expansion Bolt Weight
39mm 3.0m 47mm (max) 13.3kg
39mm 2.4m 47mm (max)

10.7kg

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