Influence Factors of the Failure of Adjacent Pipeline under Explosion in Gas Compartment of Utility Tunnel

MI Hongfu; PENG Chong; ZHANG Xiaomei; WANG Yang; WANG Lili; YANG Xue; JIANG Xinsheng

doi:10.11858/gywlxb.20210891

Volume 36 Issue 3

May. 2022

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Chinese Journal of High Pressure Physics > 2022 > 36(3): 035202.

MI Hongfu, PENG Chong, ZHANG Xiaomei, WANG Yang, WANG Lili, YANG Xue, JIANG Xinsheng. Influence Factors of the Failure of Adjacent Pipeline under Explosion in Gas Compartment of Utility Tunnel[J]. Chinese Journal of High Pressure Physics, 2022, 36(3): 035202. doi: 10.11858/gywlxb.20210891

Citation:

MI Hongfu, PENG Chong, ZHANG Xiaomei, WANG Yang, WANG Lili, YANG Xue, JIANG Xinsheng. Influence Factors of the Failure of Adjacent Pipeline under Explosion in Gas Compartment of Utility Tunnel[J]. Chinese Journal of High Pressure Physics, 2022, 36(3): 035202. doi: 10.11858/gywlxb.20210891

Citation:

MI Hongfu, PENG Chong, ZHANG Xiaomei, WANG Yang, WANG Lili, YANG Xue, JIANG Xinsheng. Influence Factors of the Failure of Adjacent Pipeline under Explosion in Gas Compartment of Utility Tunnel[J]. Chinese Journal of High Pressure Physics, 2022, 36(3): 035202. doi: 10.11858/gywlxb.20210891

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Influence Factors of the Failure of Adjacent Pipeline under Explosion in Gas Compartment of Utility Tunnel

doi: 10.11858/gywlxb.20210891

MI Hongfu^{1, 2
,},
PENG Chong^{1, 2,*
,
,},
ZHANG Xiaomei^{1, 2},
WANG Yang^{1, 2},
WANG Lili^{1, 2},
YANG Xue^{1, 2},
JIANG Xinsheng³

1.
College of Safety Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
2.
Chongqing Academy of Safety Science and Technology, Chongqing 401331, China
3.
Army Logistics Academy of PLA, Chongqing 401331, China

Received Date: 12 Oct 2021
Rev Recd Date: 29 Oct 2021
Issue Publish Date: 30 May 2022

Abstract

Abstract

In order to study the influence law and degree of premixed gas length, pipeline spacing, pipeline thickness and pipeline yield strength on the failure of the adjacent pipeline under the action of natural gas explosion in the gas compartment of the utility tunnel, a three-dimensional model of the gas compartment is established based on the actual case by using the nonlinear finite element software ANSYS/LS-DYNA to obtain the ovality change of the adjacent pipeline. The results show that under the action of natural gas explosion, the ovality of the adjacent pipeline is positively correlated with the length of premixed gas, and negatively correlated with the thickness and yield strength of the pipeline; the ovality of the adjacent pipeline is negatively correlated first and then positively correlated with the pipeline spacing, the safest pipeline spacing in this gas compartment is 0.74 m; the yield strength of the pipeline has the least influence on the ovality of the adjacent pipeline; the change rate of influencing factors is in the range of 1%–12%, 13%–18% and 19%–25%, the factors that have the greatest influence on the ovality of the adjacent pipeline are the length of premixed gas, pipeline thickness and pipeline spacing. This research can provide a reference for the design of the gas compartment in the utility tunnel.
- utility tunnel,
- gas compartment,
- gas explosion,
- pipeline,
- ovality

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References(21)

References

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