DYWIDAG-Systems International (DSI) is a manufacturer and supplier of strata reinforcement and support equipment to the underground coal and metalliferous mining sectors.
The Post-groutable Hi-Ten strand bolt is an advancement of the standard Hi-Ten bolts.
With situations where it is difficult to fully encapsulate a regular Hi-Ten Bolt with resin anchor capsules, the Post-groutable Hi-Ten Strand Bolt can be used, despite limitations of machinery or broken / failed lower strata reinforcement.
It is firstly installed using a point anchor resin cartridge, then pre-tensioned to 250kN to provide instant support. Cement grouting of the PG Hi-Ten can be carried out at the time of installation or later.