Method of using hollow anchor rods

Mainly used for systematic support of surrounding rocks with moderately good geological conditions.
In situations where hard rock, horizontal bedding of rock layers, open joints and fissures with mud, or groundwater development occurs, steel expansion shell bolts can quickly form initial support to control the deformation of the surrounding rock, ensure its stability, and then inject permanent anchoring. After using a rock drill to drill the hole to the designed depth of the anchor rod, install the steel anchor head onto the anchor rod body, place it in the hole, install the grout stop plug, pad, and nut, reverse the anchor rod to make the expansion shell anchor head expand and grasp the hole wall, and then proceed with grouting.