Novel lining structure for preventing high-speed rail tunnel from chipping

The utility model provides a novel lining structure for preventing a high-speed rail tunnel from chipping, which comprises a tunnel body, the tunnel body comprises an arch wall and an inverted arch, a secondary lining is arranged in the arch wall, the novel lining structure comprises a two-limb steel frame, the two-limb steel frame is annularly arranged along the cross section of the arch wall and is arranged in the secondary lining, the two-limb steel frame comprises a two-limb grating and a two-limb steel frame main reinforcement, and the two-limb grating and the two-limb steel frame main reinforcement are arranged in the inverted arch. The secondary lining is provided with a double-limb grid which is of a snake-shaped bent structure, a single-layer reinforcing mesh is arranged on the arc inner side of the double-limb steel frame in the secondary lining, the double-limb steel frame is provided with a plurality of longitudinal fixed connection reinforcing steel bars, and the double-limb steel frame is fixed