Super-high performance concrete compound pipeline preparation method

The invention discloses a super-high performance concrete compound pipeline preparation method. A compound pipeline is composed of an outer layer super-high performance concrete pipeline and an inner layer plastic pipeline, and the pipeline forming die adopted comprises a steel outer die and a hard plastic inner die. The method comprises the steps that 1, the dies are assembled, a pumping machine is made to be connected with the dies, and the sealing property of the pumping machine is tested; 2, a super-high performance concrete mixture is prepared; 3, the super-high performance concrete mixture is added into the pumping machine, and a pumping ejecting technology is adopted for pipeline forming; 4, after the pumping is finished, a grouting hole of the assembled dies is sealed in time; 5, entire maintenance is conducted on the dies in the pipeline belt, and die removal can be conducted when super-high performance concrete reaches the die removal intensity; 6, the dies are removed, the steel outer die is removed, and the hard plastic inner die is remained; 7, the pipeline is subjected to wet and heat maintenance or natural maintenance after the die removal is conducted until the intensity meets the requirement. Compared with other traditional pipelines, the pipeline prepared by the super-high performance concrete compound pipeline preparation method has the advantages that the durability is good, the intensity is high, the wall thickness is small, the inner wall is smooth, floatation is not prone to occurring, the sealing performance is good, the inner die is not needed to be removed in the forming process, and the manufacturing technology is simple.