Simulation and analysis of surface subsidence associated with the underground strong explosion

XU Xiaohui; LI Jie; WANG Mingyang

doi:10.11883/bzycj-2019-0167

Volume 39 Issue 8

Aug. 2019

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XU Xiaohui, LI Jie, WANG Mingyang. Simulation and analysis of surface subsidence associated with the underground strong explosion[J]. Explosion And Shock Waves, 2019, 39(8): 084202. doi: 10.11883/bzycj-2019-0167

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XU Xiaohui, LI Jie, WANG Mingyang. Simulation and analysis of surface subsidence associated with the underground strong explosion[J]. Explosion And Shock Waves, 2019, 39(8): 084202. doi: 10.11883/bzycj-2019-0167

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Simulation and analysis of surface subsidence associated with the underground strong explosion

doi: 10.11883/bzycj-2019-0167

XU Xiaohui^{1, 2
,},
LI Jie^{1, 2
,
,},
WANG Mingyang^{1, 2}

1.
College of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing 210007, Jiangsu, China

Received Date: 2019-04-24
Rev Recd Date: 2019-05-28
Publish Date: 2019-08-01

Abstract

Abstract

It is very important to monitor and evaluate the clandestine nuclear tests using the surface displacements such as subsidence craters induced by the underground nuclear explosion. Based on the similarity theory of the process of subsidence crater formation considering the influence of gravity, we conducted an explosive model test in a vacuum chamber, using our own independently developed explosive simulation apparatus and determined the subsidence zones of the surface displacements associated with the 3 September 2017 North Korean’s largest underground nuclear test. The results show that the radius of the surface subsidence zone is about 257 m, and the radius of collapse crater is about 154 m, which is equivalent to the estimated results according to the empirical formula and the monitored data of remote sensing with Synthetic Apeture Radar (SAR) by the TS-InSar satellite. Our results demonstrate that the explosive model test in a vacuum chamber can help characterize the irreversible zone of the surface displacements associated with the underground nuclear explosion, which has become an effective supplement of the seismological and satellite imagery methods to monitor the underground nuclear test.
- North Korean nuclear test,
- similarity model test,
- vacuum explosive model,
- subsidence craters

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References(22)

References

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