Method, device and equipment for calibrating track of train in tunnel and medium

The invention provides a method, a device and equipment for calibrating a train track in a tunnel and a medium. The method comprises the following steps: acquiring a current to-be-calibrated coordinate of a train and a currently positioned tunnel interval; if the vertical projection coordinates corresponding to the coordinates to be calibrated are located in the tunnel interval, converting the vertical projection coordinates into latitude and longitude coordinates; if the vertical projection coordinates are not in the tunnel interval, determining a target tunnel interval where the vertical projection coordinates are located based on the tunnel interval, and performing secondary projection on the vertical projection coordinates based on the target tunnel interval; wherein the vertical projection coordinates are obtained by projecting to-be-calibrated coordinates based on a tunnel positioning curve, the tunnel positioning curve is determined based on a plurality of positioning points of a tunnel, the tunnel com