ENERGY-ABSORBING ANCHOR CABLE FOR LARGE DEFORMATION RESISTANCE WITH ASSOCIATED CONSTRUCTION METHOD OF UNDERGROUND ENGINEERING

An energy-absorbing anchor cable resistant to large deformation and a construction method thereof are suitable for underground engineering, including an anchor cable, where an energy-absorbing column is arranged at that tail end of the anchor cable, an anti-shear sleeve is arrange at the outer side of the energy-absorbing column through an anti-deflection device, so that the energy-absorbing column is axially arranged in the anti-shear sleeve, a ribbed tray is fixed at the tail end of the anti-shear sleeve, and a limit plate with a conical structure matched with the anchor cable is connected at the front end of the anti-shear sleeve through threads; the anti-shear sleeve is a hollow cylindrical tube, the front end of the energy-absorbing column is arranged against in the limit plate, the tail of the anti-shear sleeve is provided with an anti-impact baffle, and the inner side of the anti-impact baffle is provided with a rubber gasket; the energy-absorbing column consists of a plurality of deformable energy-absorbing tubes with different deformation starting pressures connected end to end. It can allow large deformation, is not easy to be damaged by shear, has good impact resistance effect, can adjust yield distance, and does not expose the cable body to occupy roadway space.