Impermeable membrane laying device

The utility model discloses an impermeable film laying device which comprises a cylindrical compression roller, a conical compression roller and an impermeable film roll. According to the impermeable film laying device, a cylindrical pressing roller matched with a lining water diversion channel is arranged in the lining water diversion channel, conical pressing rollers are symmetrically and fixedly connected to the two sides of the cylindrical pressing roller, the conical pressing rollers are matched with the side wall of the lining water diversion channel, and a rotating shaft is jointly and rotationally connected to the middle of the cylindrical pressing roller and the middle of the conical pressing rollers in a penetrating mode; first connecting rings matched with the rotating shaft are arranged at the two ends of the rotating shaft in a sleeving mode, frame rods are fixedly connected to the outer walls of the first connecting rings, second connecting rings are fixedly connected to the ends of the frame ro