Study on Ground Vibration Mode of Physical Explosion of High Pressure Natural Gas Pipeline

In this paper, an explosion experiment was carried out on the OD1219mm-X90-12Mpa natural gas pipeline to study the vibration hazard. Based on a series of experiments, the spatial distribution of the vibration energy was studied. The vibration distribution field was drawn by interpolation method base...

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Bibliographic Details
Published in:Acoustical physics 2019-09, Vol.65 (5), p.583-592
Main Authors: Huayuan Ma, Long, Yuan, Zhong, Mingshou, Li, Xinghua, Xie, Quanmin, Xie, Xingbo
Format: Article
Language:English
Subjects:
Acoustics
Atmospheric and Aeroacoustics
Damage assessment
Energy distribution
Explosions
Gas pipelines
Ground motion
Interference
Interpolation
Natural gas
Physics
Physics and Astronomy
Pipelining (computers)
Spatial distribution
Vibration mode
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Summary:In this paper, an explosion experiment was carried out on the OD1219mm-X90-12Mpa natural gas pipeline to study the vibration hazard. Based on a series of experiments, the spatial distribution of the vibration energy was studied. The vibration distribution field was drawn by interpolation method based on re-harmonic equation and it was found that the field was non-circular symmetry. Through in-depth research, it was preliminarily proved that the vibration field had interference characteristics, which was caused by the special vibration source of the pipeline explosion. There was a significant difference in the frequency components between the interference strengthened region and the weakened region. The results shown that the strengthening effect of the interference in the 90° and 30° direction should be taken into account when evaluating the damage scope of the explosion accident. Research provided reference for safety design of parallel pipelines and buildings.
ISSN:1063-7710
1562-6865
DOI:10.1134/S1063771019050142