39mm Mining Rock Split Set Friction Bolts Mining Roof Support For Mine Seam Pipe

Split set is also know as friction bolt.
It is a rock support method used in underground mining and tunnel construction.The bolt consists of a high strength steel bolt with a ''U'' shape cross section and a longitudinal groove.
To install a Split Set bolt, a hole is made in the rock with a diameter slightly smaller than the bolt’s diameter, and the Split Set is inserted into it. As the bolt is pushed into the rock, the “U” shaped cross-section reduces and adjusts to the shape of the borehole. This expansion creates friction between the Split Set and the surrounding rock along its entire length, providing strong resistance to displacement

Advantages

1. Simple to install, just bump to finish; 2. No anchoring agent is required; 3. High friction between anchor and rock; 4. High shear and tensile strength; 5. Equipped with high-strength pallets, the pallets are subjected to uniform force; 6. Radial and axial directions can provide timely support.