Why does the underwater pipeline installation company choose China Airlines - Huaqiang Electronic Network

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Underwater pipeline installation methods and safety precautions are essential for ensuring the integrity and longevity of submerged infrastructure. These techniques involve careful planning, specialized equipment, and strict adherence to safety protocols to prevent accidents and ensure smooth operations.

The main construction methods for underwater pipeline installation include using construction ships, positioning steel pipe piles, on-site splicing of water pipes, piling ship operations, and underwater engineering plans. Divers are often involved in installing pile caps, beams, and pipe branches. Scuba divers may also be responsible for installing overhead sections, connecting water pipe heads, and securing hoop water heads around riprap. Additionally, dredgers approach excavation basements, and divers perform bed leveling before installing water pipes. Gravel is filled and backfilled to secure the underwater pipeline head.

Construction vessels such as cranes, piling ships, deck barges, and mobile cranes enter the site after obtaining all necessary approvals. Mobile cranes are suspended on shore to assist with steel pipe pile handling and water retrieval. Welders then weld the steel pipe piles and water pipes, which are lifted onto deck barges and transported to designated locations. Barges are used to transport the steel pipes to their final positions.

Underwater Pipeline Installation Technology Management Measures:

1. Develop a practical and specific construction plan, submit it to the company for approval, and report it to the supervising engineer. Construction can only begin after approval from the project engineer. Once approved, the construction plan should not be changed without proper authorization.
2. Strictly follow construction procedures and fully implement the technical specifications.
3. Before the project starts, the project manager or technical personnel must conduct a comprehensive briefing for all employees. The content includes: project overview, construction schedule, key points, and quality requirements.
4. Before handing over tasks to workers, technical personnel must clearly explain: specific tasks, schedule, construction methods, quality standards, safety procedures, and process handover details.
5. Implement a quality management policy focused on prevention, self-inspection, and control. Before starting work, technical staff will provide quality standards, inspection methods, and record formats. All records must be kept and submitted as part of the final documentation.
6. If any hidden works are involved, they must be inspected and approved by the supervising engineer. After each project phase, inspection and acceptance information must be recorded to ensure complete project documentation.
7. At the end of each month, the project team conducts inspections with relevant personnel from technical and measurement groups to ensure data completeness and avoid missing records at the end of the project.
8. Technical personnel study and apply the company’s “Construction Technology Management Measures” and “Quality Management Measures” during the project execution.
9. Periodically retest the plane control network points and engineering control points to identify and correct any issues promptly.
10. The project’s technical supervisor organizes workers to study the construction drawings, understand design intent, and participate in design meetings.

To ensure the waterproofing layer meets normal usage requirements, a separate waterproof layer is applied using asphalt-coated materials like base paper, fiber fabric, or fiber mat. The surface is coated with powder, granules, or flakes. Curable sheet-type waterproof materials are made with synthetic polymer-modified asphalt as the coating, reinforced with fiber fabric or fiber mat, and covered with powder, granules, or film material. Cracks in concrete structures are a major cause of damage, and crack leakage is one of the most common problems. To address this, expansion joints are used to seal leaks. However, internal cracks are irregular, and traditional methods like cutting and surface sealing often fail, leading to recurring leaks.

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Company: Jiangsu Huahang Underwater Engineering Co., Ltd.