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Test method for simulating submarine pipeline movement

A test method and technology for submarine pipelines, which are applied in the field of simulating the motion of submarine pipelines, can solve the problems of difficulty, high cost, lack of verification of numerical simulation, etc., and achieve the effects of convenient operation and improved efficiency.

Pending Publication Date: 2022-02-25
广州环投南沙环保能源有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the uncertainty of the pipeline movement mode and the complexity of the submarine environment, the test for the submarine pipeline movement needs to face a lot of difficulties. At the same time, the characteristics of the long distance and small diameter of the submarine pipeline also make it difficult to determine the scale of the model box.
Therefore, most of the previous studies used in-situ observation and numerical simulation for analysis, but they all have corresponding disadvantages: in-situ observation requires a lot of cost, and underwater equipment needs regular maintenance and inspection, which is relatively difficult; numerical simulation is lacking. authentication problem

Method used

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  • Test method for simulating submarine pipeline movement
  • Test method for simulating submarine pipeline movement
  • Test method for simulating submarine pipeline movement

Examples

Experimental program
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Effect test

Embodiment

[0046] Utilize the test of a kind of simulated seabed pipeline movement that the device of the present invention carries out, concrete steps are:

[0047] (1) To prepare the required experimental soil, first spread the soil 25cm away from the bottom for leveling, then spread the soil 35cm away from the bottom for leveling, and finally spread the soil 40cm away from the bottom for leveling, on the surface 1 Place a pore pressure sensor 10 at the position described above.

[0048] (2) inside the model pipeline 5 such as image 3 Attach strain gauges 12 at the positions shown. After the layout is completed, the model pipeline 5 is placed on the leveled soil, and after the remaining measurement equipment or components are installed, a layer of soil is laid to reach the buried depth required by the experiment. Slowly inject water into the model box 1 to infiltrate the soil of the simulated seabed to make it saturated, and start to speed up water injection when the liquid level ri...

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Abstract

The invention relates to the field of ocean engineering research, and in particular relates to a test method for simulating submarine pipeline movement. The method comprises the following steps: preparing a soil sample; arranging a seabed; installing a hydraulic loader and injecting water; arranging a monitoring system; starting the hydraulic loader to enable the pipeline to circularly reciprocate, enabling a data acquisition system to record experimental data of each time, recycling a model box and experimental soil after the experiment is finished, and using the obtained experimental data for post-processing. The device provided by the invention can simulate different types of submarine pipeline movement by changing conditions such as pipeline size, movement speed, movement period and the like. The device is convenient to operate, data can be automatically recorded, the scientific research efficiency is improved, and a teaching test instrument is provided for researching the damage effect of the submarine landslide on the pile foundation.

Description

technical field [0001] The invention relates to the field of marine engineering research, in particular to a test method for simulating the motion of a submarine pipeline. Background technique [0002] The submarine pipeline is a pipeline that continuously transports a large amount of oil (gas) on the seabed through a closed pipeline. It is the main component of the offshore oil (gas) field development and production system, and it is also the fastest, safest, most economical and reliable way of offshore oil and gas transportation. . The advantage of submarine pipelines is that they can be transported continuously and are almost not affected by environmental conditions, and will not force oil fields to reduce or stop production due to capacity limitations of offshore oil storage facilities or untimely pick-up of shuttle tankers. Therefore, the oil transportation efficiency is high and the oil transportation capacity is large. In addition, the submarine pipeline laying peri...

Claims

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Application Information

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IPC IPC(8): G01M10/00G09B23/12
CPCG01M10/00G09B23/12
Inventor 李水江齐添孙宏磊黄永基张金荣
Owner 广州环投南沙环保能源有限公司
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