Selfdrill grouted anchor bolt
Selfdrill grouted anchor bolt can work as a drill rod and a grouting tube. It can blow and clear away dust before grouting. Then the mud goes through the hollow bar and fill boreholes and ground fracture, solidify the bar and soil around, forming reinforced armoured concrete The drilling anchor integrates drilling, grouting and anchoring functions. It can well improve surrounding rocks in the tunnel supporting and all kinds of advanced processing slope, high geostress large deformation of the disease regulation works, to achieve the ideal of supporting effect. Contemporarily, construction within narrow environment is quite convenient, solving the difficult technical problem about unfavorable geological conditions, which no other material can serve as the substitution.