Streamlined energy pipeline capable of relieving submarine landslide impact

Abstract

The invention belongs to the technical field of production of submarine energy pipelines, and relates to a streamlined energy pipeline capable of relieving submarine landslide impact. A streamlined type is applied to a concrete weight coating on the outermost part of the traditional submarine pipeline structure, the interior structure of the traditional energy pipeline is retained, the cross section of the energy pipeline is streamlined, and except a concrete layer, other layers are consistent to a current engineering standard. The drag force and the lift force on the pipeline can be obviously smaller than the drag force and the lift force on the traditional pipeline with a circular cross section, the impact effect of submarine landslide is reduced effectively, meanwhile, a continuous oscillating lift force is transformed into a stabilizing effect, the risk of resonance of the pipeline is prevented effectively, and the disaster reduction effect is remarkable; and by the design, the disaster reduction effect on accidental load such as submarine landslide is good, and the protection effect on environmental load of flowing bodies such as bottom flow and sand wave is also good. In addition, the streamlined energy pipeline capable of relieving submarine landslide impact does not affect delivery amounts of oil, gas and water in current engineering, a production process of the pipeline does not need to be changed on a large scale either, and therefore, popularization and actual application are facilitated.

Description

technical field [0001] The invention belongs to the technical field of submarine energy pipeline production, and relates to a streamlined energy pipeline for reducing the impact of submarine landslides. Background technique [0002] Pipeline transportation is one of the main methods of energy transportation, which is continuous, fast and economical. Submarine energy pipelines have long transmission distances, high transmission efficiency, and large transmission capacity. However, pipelines laid on the seabed will inevitably be affected by complex and changeable marine geological movements. Among them, submarine landslides are the most dangerous and frequent occurrences in marine energy projects. One of the most common geological hazards, even on gentle submarine slopes Large-scale sliding may also occur, the sliding distance can reach hundreds of kilometers, and the fastest sliding speed can reach 30m / s. The high-speed sliding of sediments for such a long distance poses a ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art that the normal drag force and longitudinal lift force of the circular cross-section pipeline under the impact of the submarine landslide are too large, and the vibration form of the lift force is easy to cause resonance, the present invention proposes a streamlined pipeline that reduces the impact of the submarine landslide. Energy pipeline design method, which is especially suitable for the design of energy pipelines in submarine potential landslide areas

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