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Study on Attenuation of Underwater Explosion Shock Waves by Bubble Curtain
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Ming-ran DU1, Tian-zhao WANG1, Jin LIANG2, 3, Shao-feng LU2, 3, Ji-rui LI2, 3, Yin-jun WANG4, Yu-hang CHEN1, Zhi-fan CHEN1
Blasting | 2024, 41(2) : 212 - 222
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Blasting | 2024, 41(2): 212-222
• BLASTING SAFETY •
Study on Attenuation of Underwater Explosion Shock Waves by Bubble Curtain
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Ming-ran DU1, Tian-zhao WANG1, Jin LIANG2, 3, Shao-feng LU2, 3, Ji-rui LI2, 3, Yin-jun WANG4, Yu-hang CHEN1, Zhi-fan CHEN1
Affiliations
  • 1.School of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, China
  • 2.Guangxi New Harbour Engineering Co., Ltd., Nanning 530200, China
  • 3.Research Institution of Underwater Rock-Cutting Engineering at Guangxi Zhuang Municipality Region, Nanning 530200, China
  • 4.BGRIMM Technology group, Beijing 100160, China
Published: 2024-06-01 doi: 10.3963/j.issn.1001-487X.2024.02.026
Outline
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The shock wave generated by underwater explosions has a significant destructive impact on the surrounding environment. Therefore, it is crucial to implement bubble curtain protection for blast area safety. This study aims to investigate the influence of the number of bubble curtain layers on attenuating underwater explosion shock waves. An underwater explosion model with free water and varying numbers of bubble curtain layers was established using AUTODYN finite element software. Through experimental validation of the numerical model, a formula for calculating peak overpressure of the shock wave was derived, and the impact of different numbers of bubble curtain layers on shock wave attenuation in water was compared. The results demonstrate that employing a bubble curtain can effectively reduce peak overpressure from an underwater blast shock wave, achieving an attenuation ratio as high as 83%. Furthermore, increasing the number of bubble curtain layers can further enhance this attenuation effect, reaching more than 94% reduction in peak overpressure. Specifically, when comparing two-layered and one-layered bubble curtains at a distance of 12 m from the detonation center behind the bubble curtain, there is a reduction in peak overpressure by 61.94%. Similarly, using a three-layered bubble curtain leads to an additional decrease in peak overpressure at this distance by 11.38% compared to using a two-layered one. However, when utilizing four-layered curtains instead of three-layers ones, there is only a marginal decrease in peak overpressure (6.42%) at this same distance. In conclusion, implementing a bubble curtain significantly weakens shock waves within water bodies during explosive events. Moreover, fewer layers within the bubble curtain result in greater attenuation effects. However, diminishing returns are observed with each subsequent increase in layer count.

underwater explosion  /  bubble curtain  /  decay  /  numerical simulation  /  peak pressure
Ming-ran DU, Tian-zhao WANG, Jin LIANG, Shao-feng LU, Ji-rui LI, Yin-jun WANG, Yu-hang CHEN, Zhi-fan CHEN. Study on Attenuation of Underwater Explosion Shock Waves by Bubble Curtain[J]. Blasting, 2024 , 41 (2) : 212 -222 . DOI: 10.3963/j.issn.1001-487X.2024.02.026
Funding
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  • Natural Science Research Project of Anhui Educational Committee(KJ2021A0431)
  • Research on combined structure and construction key technology of underwater blast bubble shock wave protective curtain(桂科AB22035001)
  • Anhui Provincial Natural Science Foundation(1908085QA33)
  • Scientific Research Foundation for High-level Talents of Anhui University of Science and Technology(11881)
  • Guangxi Key Research and Development Program(防科AB21014001)
Appendix
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Year 2024 volume 41 Issue 2
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96
43
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Article Info
doi: 10.3963/j.issn.1001-487X.2024.02.026
  • Receive Date：2023-06-06
  • Online Date：2026-03-20
  • Published：2024-06-01
Article Data
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History
  • Received：2023-06-06
Funding
Natural Science Research Project of Anhui Educational Committee(KJ2021A0431)
Research on combined structure and construction key technology of underwater blast bubble shock wave protective curtain(桂科AB22035001)
Anhui Provincial Natural Science Foundation(1908085QA33)
Scientific Research Foundation for High-level Talents of Anhui University of Science and Technology(11881)
Guangxi Key Research and Development Program(防科AB21014001)
Affiliations
    1.School of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, China
    2.Guangxi New Harbour Engineering Co., Ltd., Nanning 530200, China
    3.Research Institution of Underwater Rock-Cutting Engineering at Guangxi Zhuang Municipality Region, Nanning 530200, China
    4.BGRIMM Technology group, Beijing 100160, China
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https://castjournals.cast.org.cn/joweb/bp/EN/10.3963/j.issn.1001-487X.2024.02.026
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