Oil-gas pipeline torrential flood disaster monitoring method

A technology for oil and gas pipelines and torrents, which is applied in the field of oil and gas pipelines torrent disaster monitoring, and can solve problems such as unseen

Active Publication Date: 2014-04-02
PIPECHINA SOUTH CHINA CO
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  • Application Information

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Problems solved by technology

[0018] Due to these advantages, in the field of geotechnical engineering, fiber grating sensors are easy to embed in rock and soil for high-resolution and wide-range measurement of internal strain and temperature. The technical advantages are very obvious, especially in the ability to obtain long-term, Reliable rock and soil deformation data, there is no report on the joint monitoring of vortex-induced vibration frequency of pipelines under the impact of floods and torrents in mountainous valleys with fiber grating sensing technology

Method used

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  • Oil-gas pipeline torrential flood disaster monitoring method
  • Oil-gas pipeline torrential flood disaster monitoring method
  • Oil-gas pipeline torrential flood disaster monitoring method

Examples

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Embodiment

[0141] Embodiment. This example is a kind of monitoring method, the composition of the system used is as follows Figure 1-Figure 8 shown. Field tests were carried out on the Puba River of the Lanchengyu-Chongqing Refined Oil Pipeline and the Langping River of the Zhongwu Natural Gas Pipeline. These two test sections belong to the mountain torrents of typical small watershed river channels. The flood in the river course rises and falls steeply, the source section of the river flows rapidly, and the mountain torrent has the characteristics of high intensity, high flood peak, and concentrated flood volume. It has strong downcutting and side erosion capabilities, and is highly destructive to accompanying roads, pipelines, and hydraulic protection facilities. Among them, the Puba River of the Lanchengyu Pipeline is located in Tanhe Township, Chengxian County, Longnan City, Gansu Province. The length of the affected pipeline is about 10km, and the drainage area is about 25km2; the ...

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Abstract

The invention discloses an oil-gas pipeline torrential flood disaster monitoring method based on an optical fiber grating sensing technology, and relates to the technical field of linear velocity measurement, liquid level measurement, mechanical vibration measurement, common safety devices, and pipeline systems. The method comprises the following processes: performing water level monitoring, flow speed monitoring and pipeline vortex-induced vibration monitoring on torrential flood water and a pipeline; demodulating, acquiring and preprocessing wavelength signals; remotely transmitting and receiving signals; further analyzing and processing the signals; dynamically displaying flood peak flow change and dynamically displaying pipeline vortex-induced vibration frequency; predicting torrential flood peak flow and analyzing the pipeline fatigue state; performing torrential flood forecasting and pipeline safety pre-warning. The method is high is spatial resolution, low in cost, safe and effective.

Description

technical field [0001] The invention relates to a method for monitoring mountain torrent disasters in oil and gas pipelines based on optical fiber grating sensing technology, and relates to the technical fields of linear velocity measurement, liquid level measurement, mechanical vibration measurement, general safety devices and pipeline systems. Background technique [0002] Mountain torrent disasters refer to floods, mudslides and landslides caused by rainfall in hilly areas. As global warming has led to extreme weather anomalies in recent years, torrential rains that have not been seen in decades or even in a century have occurred from time to time. There are many small and medium-sized rivers in my country, with drainage areas ranging from 100 to 1,000 km 2 There are more than 50,000 rivers in China; at the same time, my country is located in the East Asian monsoon region, with frequent rainstorms in hilly areas, vertical and horizontal gullies, complex topographic and g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B21/10
CPCY02A50/00
Inventor 韩冰马云宾李亮亮谭东杰郝建斌吴张中荆宏远刘建平
Owner PIPECHINA SOUTH CHINA CO
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