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Study on Attenuation Law of Axial and Radial Explosion Stress Wave with Different Charge Structures in Concrete
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Zhi-dong GUO1, Guang LI1, He-chao ZHU1, Shi-chao HU1, Jin-jing ZUO2, Shuai YOU3
Blasting | 2024, 41(4) : 18 - 24
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Blasting | 2024, 41(4): 18-24
• THEORETICAL AND TECHNOLOGICAL EXPLORATION •
Study on Attenuation Law of Axial and Radial Explosion Stress Wave with Different Charge Structures in Concrete
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Zhi-dong GUO1, Guang LI1, He-chao ZHU1, Shi-chao HU1, Jin-jing ZUO2, Shuai YOU3
Affiliations
  • 1.Ansteel Cornerstone Mining Corporation, Limited, Anshan 114047, China
  • 2.School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
  • 3.School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
Published: 2024-12-01 doi: 10.3963/j.issn.1001-487X.2024.04.003
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To explore the attenuation law of blasting stress waves in concrete under different charging structures, the strain values at different positions of the experimental models were tested by a 16-channel dynamic strain gauge based on similarity theory. Meanwhile, the attenuation law of axial and radial blast stress waves in concrete under different charge structures was obtained by calculating the peak stress. The results show that the blasting stress wave exhibits a power exponential decay as the distance between the blasting centers increases. The initial pressure and maximum pressure on the borehole wall of the coupled charge structure are the highest, and the detonation wave acts on the medium for a short time. The uncoupled charge structure reduces the initial pressure on the borehole wall and prolongs the time of detonation pressure action. The coupled charging structure consumes much energy in the crushing zone, and the energy transfer is uneven. The stress wave attenuation of the uncoupled charging structure during blasting is slow, and the energy transfer is uniform.

model experiments  /  concrete  /  different charge structures  /  bursting stress waves  /  strain
Zhi-dong GUO, Guang LI, He-chao ZHU, Shi-chao HU, Jin-jing ZUO, Shuai YOU. Study on Attenuation Law of Axial and Radial Explosion Stress Wave with Different Charge Structures in Concrete[J]. Blasting, 2024 , 41 (4) : 18 -24 . DOI: 10.3963/j.issn.1001-487X.2024.04.003
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  • National Nsatural Science Foundation of China(52208384)
Appendix
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Year 2024 volume 41 Issue 4
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Article Info
doi: 10.3963/j.issn.1001-487X.2024.04.003
  • Receive Date：2024-04-01
  • Online Date：2026-03-19
  • Published：2024-12-01
Article Data
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History
  • Received：2024-04-01
Funding
National Nsatural Science Foundation of China(52208384)
Affiliations
    1.Ansteel Cornerstone Mining Corporation, Limited, Anshan 114047, China
    2.School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
    3.School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
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https://castjournals.cast.org.cn/joweb/bp/EN/10.3963/j.issn.1001-487X.2024.04.003
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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