Theory and test of underground explosions: Coupling rule between cratering and ground shock
Calculating the parameters of the ground shock induced by an underground explosion is a complex energy coupling problem. It is difficult to establish a unified ground shock coupling law from limited test data. This paper summarizes the research results obtained at home and abroad and systematically...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2024-08-01
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| Series: | Underground Space |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2467967424000084 |
| _version_ | 1797289728382337024 |
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| author | Wei Guo Jie Li Benjun Shi Tianhan Xu Xiaohui Xu Gan Li Jie Shi |
| author_facet | Wei Guo Jie Li Benjun Shi Tianhan Xu Xiaohui Xu Gan Li Jie Shi |
| author_sort | Wei Guo |
| collection | DOAJ |
| description | Calculating the parameters of the ground shock induced by an underground explosion is a complex energy coupling problem. It is difficult to establish a unified ground shock coupling law from limited test data. This paper summarizes the research results obtained at home and abroad and systematically analyzes the coupling mechanism of craters formed by an underground explosion and the ground shock. The differences between the concepts of “closed-explosion critical depth” and “equivalent closed-explosion critical depth” are clearly explained. The spreading of the ground shock energy is attributed to the explosive expansion of the air cavity, revealing a linear relationship between the volume of the cavity region (or the volume of the crack region) and the ground shock energy associated with the underground explosion. The proportionality factor is related to the mechanical properties of the medium and is independent of the magnitude of the explosion equivalent. Based on this, a theoretical calculation formula and conversion method for the ground shock coupling coefficient were established. Explosion tests were conducted in clay and Plexiglass under varying burial depths. The test results were consistent with the theoretically calculated results. Our study provides a theoretical basis for the design of explosion-resistant structures in underground engineering. |
| first_indexed | 2024-03-07T19:09:10Z |
| format | Article |
| id | doaj.art-41902beea149451f98210919452b357d |
| institution | Directory Open Access Journal |
| issn | 2467-9674 |
| language | English |
| last_indexed | 2024-03-07T19:09:10Z |
| publishDate | 2024-08-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Underground Space |
| spelling | doaj.art-41902beea149451f98210919452b357d2024-03-01T05:06:54ZengKeAi Communications Co., Ltd.Underground Space2467-96742024-08-0117146160Theory and test of underground explosions: Coupling rule between cratering and ground shockWei Guo0Jie Li1Benjun Shi2Tianhan Xu3Xiaohui Xu4Gan Li5Jie Shi6State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing 210007, ChinaCorresponding author.; State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing 210007, ChinaState Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing 210007, ChinaState Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing 210007, ChinaState Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing 210007, ChinaState Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing 210007, ChinaState Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing 210007, ChinaCalculating the parameters of the ground shock induced by an underground explosion is a complex energy coupling problem. It is difficult to establish a unified ground shock coupling law from limited test data. This paper summarizes the research results obtained at home and abroad and systematically analyzes the coupling mechanism of craters formed by an underground explosion and the ground shock. The differences between the concepts of “closed-explosion critical depth” and “equivalent closed-explosion critical depth” are clearly explained. The spreading of the ground shock energy is attributed to the explosive expansion of the air cavity, revealing a linear relationship between the volume of the cavity region (or the volume of the crack region) and the ground shock energy associated with the underground explosion. The proportionality factor is related to the mechanical properties of the medium and is independent of the magnitude of the explosion equivalent. Based on this, a theoretical calculation formula and conversion method for the ground shock coupling coefficient were established. Explosion tests were conducted in clay and Plexiglass under varying burial depths. The test results were consistent with the theoretically calculated results. Our study provides a theoretical basis for the design of explosion-resistant structures in underground engineering.http://www.sciencedirect.com/science/article/pii/S2467967424000084Underground explosionGround shock couplingCoupling coefficientEquivalent closed explosionExperimental study |
| spellingShingle | Wei Guo Jie Li Benjun Shi Tianhan Xu Xiaohui Xu Gan Li Jie Shi Theory and test of underground explosions: Coupling rule between cratering and ground shock Underground Space Underground explosion Ground shock coupling Coupling coefficient Equivalent closed explosion Experimental study |
| title | Theory and test of underground explosions: Coupling rule between cratering and ground shock |
| title_full | Theory and test of underground explosions: Coupling rule between cratering and ground shock |
| title_fullStr | Theory and test of underground explosions: Coupling rule between cratering and ground shock |
| title_full_unstemmed | Theory and test of underground explosions: Coupling rule between cratering and ground shock |
| title_short | Theory and test of underground explosions: Coupling rule between cratering and ground shock |
| title_sort | theory and test of underground explosions coupling rule between cratering and ground shock |
| topic | Underground explosion Ground shock coupling Coupling coefficient Equivalent closed explosion Experimental study |
| url | http://www.sciencedirect.com/science/article/pii/S2467967424000084 |
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