Damping and anti-seismic control method for fault-crossing tunnel

The invention discloses a shock absorption and seismic resistance control method for a fault-crossing tunnel, belongs to the field of rock and soil mechanics, and systematically adopts an energy absorption and shock absorption and deformation seismic resistance mode to control the fault tunnel from a damage mechanism of an earthquake to the tunnel. Wherein the shock absorption measures are as follows: the NPR anchor cable absorbs energy across the fault and grouts the fault, and a support parameter design method of the NPR anchor cable is obtained by calculating the energy density; the invention further provides an NPR anchor cable structure suitable for fault tunnel supporting. The anti-seismic measure comprises the steps that overexcavation is conducted on the tunnel according to the historical maximum displacement of the fault, NPR steel and foam concrete are combined, and the energy absorption layer suitable for the fault tunnel is provided. According to the prevention and control measures of the fault-cr