The invention belongs to the technical field of
underwater pipeline installation and construction, and discloses a construction method of water intaking pipes. The construction method of the water intaking pipes comprises five steps that step 1, the water intaking pipes are manufactured in section; step 2, an
underwater foundation trench is excavated; step 3, a foundation trench
cushion layer is laid; step 4, the water intaking pipes are installed; step 5,
underwater concrete is poured; and no sequence of time exists between the step 1 and the step 2 as well as between the step 1 and the step 3. According to the construction method of the water intaking pipes, the water intaking pipelines are adopted in section on
shore,
carbon dioxide gas automatic shielded-
welding welding and anti-
corrosion processing treatment are adopted, the processed pipelines are transported and lifted in section, immersed tubes are installed, the underwater connection of all
pipe sections adopts a Huff joint form,
underwater welding and the demand for large lifting ships can be avoided, the quality of manufacturing
welding and connection is ensured, and the efficiency can be greatly improved; and the construction time is shortened, according to the construction method, no more labor and space on site are occupied, planning in advance can be carried out, and the cost is saved.