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Lateral Support to Mine box cut

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 Lateral Support 

 

Terra Strata undertook the lateral support for a Limpopo-based platinum mine’s box cut. This included drilling and installation of lateral support (including soil nails, two-metre resin bolts, two-metre Split sets, cable-lock anchors); Meshing and wet-creting for lateral support, including installation of diamond mesh and wet Crete application; and the installation of SDA’s (Spiles) for the hitch area of the box cut, equating to 2 112m of drilling and 13 140 litres of grout.

Lateral Support to Mine box cut

Terra Strata undertook the lateral support for a Limpopo-based platinum mine’s box cut, entailing:

Drilling for lateral support, including:

  • Drilling and installation of soil nails of various lengths
    • 3m x 1733No for a total of 5 199m.
    • 6m x 491No for a total of 2 946m.
    • 9m x 3No for a total of 27m.
  • Drilling and installation of two-metre resin bolts, 486No for a total of 972m.
  • Drilling and installation of two-metre Splitsets,168No for a total of 336m.
  • Drilling and installation of Cable-lock anchors 33No for a total length of 295m.
  • Total metres of installation support equates to 9 775m on 2 914 positions.

Meshing and wet-creting for lateral support, including:

  • Installation of 6 732m2  of 50x50x4 diamond mesh.
  • 2 347m2and 340m3 of 25MPa wet Crete application with an average thickness of 150mm.

SDA’s (Spiles)

  • SDA’s (spiles) are planned for the hitch area of the box cut.
  • Total SDA’s planned: 264No, eight metre deep with one metre protrusion using R38N. This equates to 2 112m of drilling and 13 140 litres of grout.

 

Skills

Posted on

July 4, 2023