Monitoring method and monitoring device for displacement of oil and gas pipeline in frozen soil area

Abstract

The invention provides a monitoring method and a monitoring device for displacement of an oil and gas pipeline in a frozen soil area, and relates to the technical field of measuring of linear dimension and a piping system. A total station is utilized for monitoring displacement of the pipeline in the frozen soil area. A reference peg and a sighting peg are mounted in a monitoring area, and pipeline clamping devices are mounted on a pipeline to be monitored. A local coordinate system is established based on the reference peg and the sighting peg, and coordinates of the pipeline clamping devices are regularly measured. If displacement of the pipeline occurs, coordinates of the pipeline clamping devices are changed, and coordinate transformation in the time interval of two measurements is the displacement of the pipeline in the time interval. The monitoring device for displacement of the oil and gas pipeline in the frozen soil area is low in cost, stable and reliable, convenient to operate, and capable of effectively monitoring displacement of a pipeline in a frozen area.

Description

technical field [0001] The invention relates to a method and a device for monitoring the displacement of an oil and gas pipeline in a permafrost region. In the field of measurement of linear dimensions and piping system technology. Background technique [0002] Frozen soil is a special kind of soil, the temperature is negative temperature or zero temperature, and the soil containing ice is called permafrost. According to the length of the frozen state of the soil, frozen soil can generally be divided into short-term frozen soil (a few hours to half a month), seasonal frozen soil (half a month to several months) and permafrost (more than two years). my country's permafrost is very developed. The permafrost area is about 2.11 million square kilometers, accounting for 23% of my country's total land area and ranking third in the world. The area of ​​permafrost is about 5.14 million square kilometers, accounting for about 53.5% of the total land area of ​​the country. Among the...

AI Technical Summary

Problems solved by technology

[0008] Although domestic and foreign pipeline operators have taken active measures to deal with frost heaving and thawing disasters in permafrost regions, the formation mechanism of frost heaving and thawing disasters is very complicated, and the characteristics of permafrost in different regions are different. There is no mature monitoring technology that can monitor the impact of frost heaving and thawing disasters on pipelines

At present, there is no report on monitoring the displacement of pipelines in permafrost regions using total station measurement technology

Images