A method and device for preventing pipe body thawing and sinking in permafrost regions by using pontoon device

Abstract

The invention relates to a method and a device for controlling thaw settlement of pipes in permafrost regions by a pontoon device and relates to the technical field of pipeline systems. The method and the device are characterized in that the pontoon device provides a pipeline with uplift force to raise the pipeline and prevent thaw settlement; when the ground of the permafrost region freezes, the pontoon device and frozen earth freeze together and also provide the pipeline uplift force; two stop bars (2) are buried on each side of a buried pipeline (1), the upper ends of the four stop bars (2) are limited with lightweight waterproof filling material (3) and a shell (4) to form the pontoon device; a lifting tape (6) wound around the buried pipeline (1) is fixed below the pontoon device through screws (5); measure points are used as pipeline support points; the support points are used to support the pipeline to ensure that beyond-expectation settlement never occurs to the pipeline. The device has no moving parts, is free of maintenance, has good reliability, is free of power consumption and is applicable to buried pipelines in the permafrost regions.

Description

technical field [0001] The invention relates to a method and a device for preventing and controlling the thawing and sinking of a pipe body in a permafrost region by using a floating boat device. It relates to the technical field of piping systems. Background technique [0002] With the rapid development of my country's economy, the demand for oil and gas resources is also increasing. As an economical, safe, and uninterrupted long-distance oil and gas transportation tool, oil and gas pipelines have achieved tremendous development in recent decades. However, since many oil and gas resources are stored in permafrost regions, in order to meet the demand for oil and gas resources for economic development, more and more oil and gas pipelines will inevitably be built in permafrost regions. At present, the crude oil pipelines built in permafrost regions at home and abroad are representative of the Alaska pipeline in the United States, the Norman Wells pipeline in Canada and the M...

AI Technical Summary

Problems solved by technology

Second, after the permafrost thaws, the mechanical bearing capacity decreases sharply, or even loses the bearing capacity, making it impossible to effectively support the pipeline

Its shortcoming is that it not only consumes a lot of electric energy, does not take advantage of environmental protection and energy saving, but also has high operation and maintenance costs, which is economically unreasonable.

It can only measure and cannot prevent the melting of pipelines

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