Railway tunnel construction device based on BIM technology

The invention provides a railway tunnel construction device based on a BIM technology. The railway tunnel construction device solves the problems that circulating ventilation cannot be achieved in the ventilation process of a railway tunnel, air cannot be purified, and a purification device cannot be cleaned in time. The tunnel comprises a tunnel body, the front end and the rear end in the tunnel body are fixedly connected with a front supporting frame and a rear supporting frame correspondingly, sliding rails are arranged on the front supporting frame and the rear supporting frame correspondingly, a purification filter screen is detachably connected between the sliding rails, and guide sliding rails are fixedly connected to the inner sides of the front supporting frame and the rear supporting frame correspondingly; rolling wheels are rotationally connected into the sliding limiting sliding rails correspondingly, driving gears are coaxially and fixedly connected to the inner sides, close to the tunnel body, o