Method for pre-burying and laying natural gas pipeline

Abstract

The invention discloses a method for pre-burying and laying a natural gas pipeline. The method specifically comprises the following steps that 1, a pre-buried line is calibrated, and the pre-buried line is marked; step 2, a pre-buried trench is dug, and the pre-buried trench is dug according to a mark line position; 3, the trench is trimmed, and the excavated trench is refined and trimmed; 4,a bottom layer is laid; 5, the two side surfaces of the bottom of the trench are reinforced; 6, a trench cover plate is prepared; 7, an inner layer is laid; 8, a pipeline is installed; 9,a cover plate is laid on the upper end of the trench; and 10, a surface layer is laid. A strong protection support is provided for the pipeline by adopting a concrete reinforcing mode, meanwhile, the vibration of the natural gas pipeline is reduced by adopting a rubber pad wrapping mode, and natural gas in the pipeline can run stably; and a drainage layer is formed by a pre-buried steel pipe and a gravel layer below, so that accumulated water is prevented from being formed near the pipeline, the pipeline is prevented from being corroded by the accumulated water, and the service life of the pipeline is prolonged.

Description

technical field [0001] The invention relates to the technical field of laying natural gas pipelines, in particular to a pre-embedded method for laying natural gas pipelines. Background technique [0002] A natural gas pipeline is a pipeline for transporting natural gas. The transport direction is generally from the natural gas production area to the natural gas consumption area, and the transport distance is generally long. Natural gas pipeline transportation has the advantages of low transportation cost, less land occupation, fast construction, high safety performance, less transportation loss, less risk of leakage, less environmental pollution, less impact from harsh weather, and easy management. Therefore, natural gas pipeline transportation is used to transport natural gas , is the main way to transport large quantities of natural gas on land. In the existing post-technology, the erection of natural gas pipelines is mainly divided into above-ground installation and unde...

AI Technical Summary

Problems solved by technology

[0003] 1. In the process of underground installation, the pipeline is often damaged due to the lack of effective support and protection, and in severe cases, natural gas leakage is caused;

[0004] 2. In the process of underground installation, natural gas pipelines will be corroded due to water seepage, reducing the service life of natural gas pipelines