Skid resistance supporting straining protection method for passing through topsoil of landslide area of oil and gas conveying pipeline

Abstract

The invention discloses a skid resistance supporting straining protection method for passing through a topsoil of the landslide area of an oil and gas conveying pipeline. The method comprises the following steps: a skid resistance and supporting pier, a trapezoidal groove reinforced concrete cushion cap and a pipeline transformation adjusting device are constructed; the pipeline transformation adjusting device capable of sliding freely is arranged on the groove-shaped cushion cap at the top of the pipeline and the skid resistance and supporting pier, and when the pipeline is subjected to the thrust effect of the landslide, the pipeline can perform self adjusting through the pipeline transformation adjusting device, so that the stress of the pipeline is reduced, the straining design is realized, and the purpose of protecting the pipeline is achieved. Besides, in consideration of the anti-seismic requirement, the filler material with better elasticity is filled between the pipeline in the groove and the two side walls of the groove through adopting the method, so that when a strong earthquake occurs, the pipeline in the trapezoidal groove is enabled to slightly move to left or right along with the shaking of the earthquake to relieve strong impact brought by the earthquake, and the purpose of protecting the pipeline is achieved.

Description

technical field

[0001] The invention relates to an anti-sliding support strain protection method for an oil and gas pipeline crossing a surface soil landslide area, which can be widely used for protecting the pipeline when the pipeline crosses the surface soil landslide area (the buried depth of the sliding surface is less than 5m). Background technique

[0002] With the construction and development of long-distance oil and gas pipelines in mountainous areas, it is inevitable that many sections will pass through the surface soil landslide development area. However, most of the pipeline construction period did not consider this situation, so no targeted pipeline protection measures were taken. After the completion and operation of the pipeline project, under the conditions of rainfall and earthquakes, the movement of the surface soil will promote the deformation of the pipeline, and even cause the pipeline to break and damage, causing oil leakage and fire, which will cause gr...

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