Tunnel lining crack treatment device

The invention provides a tunnel lining crack treatment device, and relates to the technical field of tunnel maintenance equipment.The tunnel lining crack treatment device comprises a detection assembly and a repairing assembly, the detection assembly is used for detecting cracks in a lining, the repairing assembly is used for repairing the cracks, and the detection assembly is a three-dimensional laser ultrasonic scanner; the three-dimensional laser ultrasonic scanner detects cracks inside the lining through ultrasonic waves, and the repairing assembly drills the lining with the cracks inside and then conducts grouting repairing. According to the method, a new three-dimensional laser ultrasonic scanning technology is adopted, and the problem that the crack recognition precision of a traditional method is insufficient is solved; and cracks in the lining can be detected, the lining with the cracks in the lining is drilled and then subjected to grouting repair, repair is conducted in the micro-crack stage, and t