After drilling operation of bores are performed by the drill
wagon,rock ancor bolt spacers which are designed with three concrete
cover distances of 1cm., 2cm., and 3cm. are used to cover anchor bars in
order to strengthen the soil.
Instruction for use: Rock Anchore Bolt spacers are selected according to
the bore diameter and are placed around the anchor bolts(rebars of 32
mmdiameter and over) as per illustration, and simultaneously the
injection pipe and anchor bolt are placed in the drilled bore, so that
the spacers provide suitable concrete cover distance around the anchor
bolt, and to stabilize the rebar in the bore center,preventing the
anchore bolt to tuch the soil and thus to avoid corrosion, At this stage
the grout injection operation begins.This operation will prevent
probable land slip in the trenches and the tunnel