Tunnel embedded channel detection equipment

The invention belongs to the technical field of tunnel pre-buried channel detection, and particularly relates to tunnel pre-buried channel detection equipment which comprises a left detection module and a right detection module which are identical in structure, the left detection module and the right detection module are connected to a clamping block through a fixing plate, and a connector is installed on the clamping block; the right detection module comprises a base, moving wheels and a hovering cylinder are installed on the base, a moving plate is installed in the hovering cylinder, and a connecting spring is installed between the moving plate and the hovering cylinder; an extension rod is mounted on the moving plate, and a distance sensor is mounted in the hovering cylinder; the extension rod is provided with an air blowing hole, the air blowing hole faces the side wall of the channel to be detected, the lower end of the extension rod is connected with an air pipe, and the upper end of the extension rod i