Project Overview
Due to the Southwest Refined Oil Pipeline passing through the critical zone of Guang-Zhan High-Speed Rail (Zhanjiang North Station), pipeline relocation is required.
Key Construction Details:
- Start Point Tie-in Location:
- Near Tanshang Village, Haitou Subdistrict, Xiashan District, Zhanjiang (~150m northeast, former Zhanjiang Airport south side).
- Pile No.: ZM002+300 | Burial Depth: ~1.1m
- End Point Tie-in Location:
- Near Hongwuxia Village, Chikan District (under Xicheng Expressway wasteland).
- Pile No.: ZM007+700 | Burial Depth: ~1.2m
Pipeline Specifications:
| Parameter | Existing Pipeline | New Pipeline |
|---|---|---|
| Diameter | φ406.4mm | φ406.4mm |
| Wall Thickness | 7.1mm (X60 ERW) | 9.5mm (X60M SAW) |
| Design Pressure | 9.5 MPa | 9.5 MPa |
| Coating | Fusion-bonded epoxy + ICCP | Fusion-bonded epoxy + ICCP |
| Fiber Optic Cable | 12-core (parallel) | N/A |
| Operating Pressure | 3.2 MPa (reduced to <3 MPa for hot tapping) | — |
Relocation Scope:
- New Pipeline Length: 12.3 km
- Old Pipeline Removal: 5.75 km (~760m³ oil recovery)
- Critical Tasks:
- Hot tapping & stoppling under pressure (DN406)
- Pipe cutting, buttering wall installation, plugging
- Tee welding, balanced valve spool installatio
Construction Schedule & Location
- Duration: September 18–24, 2024
- Location: Zhanjiang, Guangdong, China
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