Waterproof sleeve structure suitable for directly-buried heat supply pipeline in high-water-level soft soil base area

The invention discloses a waterproof casing pipe structure suitable for a high-water-level soft soil base area direct burial heat supply pipeline, which comprises a casing pipe and a heat preservation pipe, a first displacement structure and a second displacement structure are arranged between the casing pipe and the heat preservation pipe, and a waterproof structure is arranged between the first displacement structure and the second displacement structure. A first polyethylene circular ring block is fixedly connected to the inner circumferential wall of the sleeve, a polyethylene outer protection pipe is arranged outside the heat preservation pipe, and the waterproof structure comprises a second polyethylene circular ring block abutting against the first polyethylene circular ring block and a third polyethylene circular ring block abutting against the polyethylene outer protection pipe. The two ends of the waterproof cloth are connected to the second polyethylene circular ring block and the third polyethylen