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<p>Strong surface impact will produce strong vibration, which will pose a threat to the safety of nearby buried pipelines and other important lifeline projects. Based on the verified numerical method, a comprehensive numerical parameter analysis is conducted on the key influencing factors of the vibration isolation hole (VIH), which include hole diameter, hole net spacing, hole depth, hole number, hole arrangement, and soil parameters. The results indicate that a smaller ratio of net spacing to hole diameter, the deeper the hole, the multi-row hole, the hole adoption of staggered arrangements, and better site soil conditions can enhance the efficiency of the VIH barrier. The average maximum vibration reduction efficiency within the vibration isolation area can reach 42.2%. The vibration safety of adjacent oil pipelines during a dynamic compaction projection was evaluated according to existing standards, and the measurement of the VIH was recommended to reduce excessive vibration. The single-row vibration isolation scheme and three-row staggered arrangement with the same hole parameters are suggested according to different cases. The research findings can serve as a reference for the vibration safety analysis, assessment, and control of adjacent underground facilities under the influence of strong surface impact loads.</p>

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Vibration safety assessment and parameter analysis of buried oil pipelines based on vibration isolation holes under strong surface impact

  • 期刊论文

  • 发表日期：

    2025年1月20日

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  • Guobo Wang,
  • Hua Mei,
  • Jianning Wang,
  • Wei He,
  • Yao Yin,
  • Yuxin Zhai,
  • Pengfei Zuo

摘要

Strong surface impact will produce strong vibration, which will pose a threat to the safety of nearby buried pipelines and other important lifeline projects. Based on the verified numerical method, a comprehensive numerical parameter analysis is conducted on the key influencing factors of the vibration isolation hole (VIH), which include hole diameter, hole net spacing, hole depth, hole number, hole arrangement, and soil parameters. The results indicate that a smaller ratio of net spacing to hole diameter, the deeper the hole, the multi-row hole, the hole adoption of staggered arrangements, and better site soil conditions can enhance the efficiency of the VIH barrier. The average maximum vibration reduction efficiency within the vibration isolation area can reach 42.2%. The vibration safety of adjacent oil pipelines during a dynamic compaction projection was evaluated according to existing standards, and the measurement of the VIH was recommended to reduce excessive vibration. The single-row vibration isolation scheme and three-row staggered arrangement with the same hole parameters are suggested according to different cases. The research findings can serve as a reference for the vibration safety analysis, assessment, and control of adjacent underground facilities under the influence of strong surface impact loads.