Large heat preservation facility for overflow well of tailing pond

The utility model provides a large heat preservation facility for an overflow well of a tailings pond, and belongs to the technical field of heat preservation facilities for overflow wells of tailings ponds. The device comprises a heat preservation shed inner ring, a heat preservation shed outer ring, a heat preservation shed roof, overflow well stand columns, overflow well ring beams and the like, the heat preservation shed is arranged on a floating bridge platform, pulley blocks are fixedly arranged at the four corners of the overflow well ring beams at the top through fixing bolts, steel wire ropes penetrate through the pulley blocks, one ends of the steel wire ropes are wound on winches, and the other ends of the steel wire ropes are connected with the heat preservation shed roof. The connector is connected with the winch and the floating bridge platform, and the thermal insulation shed is provided with a temperature monitoring system. The overflow well can be kept in an unfrozen state in a certain area a