High-performance tunnel lining crack rapid repairing material

The invention relates to a high-performance rapid repairing material for tunnel lining cracks. The high-performance rapid repairing material comprises the following components in parts by weight: 100 parts of superfine cement, 50-70 parts of waterborne epoxy resin, 50-70 parts of a waterborne curing agent, 20-21 parts of waterborne polyurethane, 1-2 parts of a defoaming agent and 30-40 parts of water, the preparation method comprises the following steps: uniformly mixing 50-70 parts of water-borne epoxy resin and 50-70 parts of water-borne curing agent to obtain a first mixture; uniformly mixing the first mixture with 20-21 parts of waterborne polyurethane to obtain a second mixture; uniformly mixing 100 parts of superfine cement and 30-40 parts of water to obtain a third mixture; and uniformly mixing the second mixture and the third mixture, and uniformly mixing with 1-2 parts of a defoaming agent to obtain the crack repairing material. The repairing material provided by the invention has the characteristics