The Anti-Impact Characteristics of Cables under Impact Load

The cable plays a vital role in roadway support. As the last barrier to prevent roof collapse and impact disaster accidents, it is of great significance study stress characteristics cables under dynamic load guide rock burst With high-strength Φ21.6 Φ21.8 mm low-resistance high-extension Φ21.5 as examples, this paper studied instantaneous mechanical state energy dissipation different types loads by using testing machines high-frequency data acquisition system. results show that process can strengthen strength cable. elongation anchor are pair characteristic indexes with an inverse relationship. Simply increasing one index cannot improve overall resistance To quantitatively characterize absorption effect cables, k was introduced. smaller index, better cables. In cable, about 43.7% total dissipated disordered form energy. similar viscoelastic impact. collision compaction stage, force basically constant. Most absorbed or transformed 17.7% which mostly less, so better. important bearing surrounding rock. anti-impact performance should be considered support design.