Development of the testing apparatus for modeling large equivalent underground cratering explosions

XU Xiaohui; QIU Yanyu; WANG Mingyang; SHAO Luzhong

doi:10.11883/bzycj-2017-0144

Volume 38 Issue 6

Sep. 2018

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XU Xiaohui, QIU Yanyu, WANG Mingyang, SHAO Luzhong. Development of the testing apparatus for modeling large equivalent underground cratering explosions[J]. Explosion And Shock Waves, 2018, 38(6): 1333-1343. doi: 10.11883/bzycj-2017-0144

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XU Xiaohui, QIU Yanyu, WANG Mingyang, SHAO Luzhong. Development of the testing apparatus for modeling large equivalent underground cratering explosions[J]. Explosion And Shock Waves, 2018, 38(6): 1333-1343. doi: 10.11883/bzycj-2017-0144

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Development of the testing apparatus for modeling large equivalent underground cratering explosions

doi: 10.11883/bzycj-2017-0144

XU Xiaohui^{1, 2
,},
QIU Yanyu^{1, 2},
WANG Mingyang^{1, 2},
SHAO Luzhong²

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

Received Date: 2017-05-02
Rev Recd Date: 2017-09-18
Publish Date: 2018-11-25

Abstract

Abstract

Aiming at solving the difficult problem of simulating the ejection crater and loose bulging under underground explosion, a method of vacuum chamber for simulating underground explosion effects is presented based on the similarity theory, and a testing apparatus is developed. The core assemblies of this apparatus consist of pressure vessel, fast-open door enclosed mechanism, explosive source simulation system with accurate burst control, vacuum pump air-removal system and instrumentation system. This set of apparatus could model the underground explosions with the equivalent of 0.1-100 kt TNT and the buried depth of 20-400 m, and it also could simulate the large-scale explosions with different charge schemes under complicated geological conditions. The typical modeling experimental results show that the apparatus is accurately adjusted and technically controllable, and that the experimental results are reliable. The testing apparatus for large-scale underground cratering explosions could provide assistances for both the damage effect analysis of the ejection explosions subject to earth-penetrating nuclear weapons and the prediction and forecast of the large-scale engineering blasting, and fill the shot of centrifuge cratering experiment which cannot model the large-scale underground explosions.
- large equivalent cratering explosion,
- similarity model test,
- development device,
- underground nuclear explosion,
- engineering blasting

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References(13)

References

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