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Study on Explosion Equivalent and its Influencing Factors of DT-3 under External Flame Stimulation
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Fei-yang XU1, Jing-jing ZHANG2, Li-min KANG1, Ya-dong YAO3, Man-man XIA4, Zhi-yong MA1, Guang-fei GUO1, San-zhen WU1, Sen XU1
Blasting | 2024, 41(2) : 245 - 252
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Blasting | 2024, 41(2): 245-252
• BLASTING SAFETY •
Study on Explosion Equivalent and its Influencing Factors of DT-3 under External Flame Stimulation
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Fei-yang XU1, Jing-jing ZHANG2, Li-min KANG1, Ya-dong YAO3, Man-man XIA4, Zhi-yong MA1, Guang-fei GUO1, San-zhen WU1, Sen XU1
Affiliations
  • 1.School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
  • 2.NUST & CBSW Safety science and technology Co., LTD., Nanjing 210094, China
  • 3.Beijing Institute of Aerospace Testing Technology, Beijing 100074, China
  • 4.An Hui Tianming Blasting Engineering Co., Ltd., Chuzhou 239000, China
Published: 2024-06-01 doi: 10.3963/j.issn.1001-487X.2024.02.030
Outline
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To study the explosion equivalent of DT-3 and its influencing factors caused by fire stimulus during storage, transportation and use, the propagate detonation ability of that was studied by the extremely insensitive to detonating substances (EIDS) gap test. High-speed cameras and a shock wave pressure acquisition system were utilized to obtain information on the deflagration processes and shock wave hazards of DT-3 under external flame effect. Additionally, an infrared thermal imager was employed to determine the highest temperature of the surface fireball. Further calculations were conducted to determine the explosive TNT equivalent of 18 kg and 120 kg DT-3 samples. The experimental results indicate that direct exposure to a strong shockwave does not cause DT-3 propagation detonation. However, different packing strengths can lead to deflagration events under external fire conditions, potentially resulting in an overall detonation reaction. The average TNT equivalents for standard packaged 18 kg and 120 kg DT-3 samples were found to be 0.629 and 0.0293 respectively. Furthermore, there is no positive correlation between the scale effect and shock wave impact. Under fire stimulus conditions, package design strength significantly influences the explosive characteristics of DT-3. To enhance safety measures, it is recommended that package design strength be reduced within acceptable limits for actual usage in order to effectively mitigate the risk of detonation hazard.

DT-3  /  shock wave sensitivity  /  fire stimulus  /  explosion equivalent  /  packing design pressure
Fei-yang XU, Jing-jing ZHANG, Li-min KANG, Ya-dong YAO, Man-man XIA, Zhi-yong MA, Guang-fei GUO, San-zhen WU, Sen XU. Study on Explosion Equivalent and its Influencing Factors of DT-3 under External Flame Stimulation[J]. Blasting, 2024 , 41 (2) : 245 -252 . DOI: 10.3963/j.issn.1001-487X.2024.02.030
Funding
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  • National Natural Science Foundation of China (NSFC) project(12272184)
  • China Postdoctoral Science Foundation(2023M731695)
  • Fundamental Research Funds for the Central Universities(30922010503)
  • Jiangsu Funding Program for Excellent Postdoctoral Talent
Appendix
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Year 2024 volume 41 Issue 2
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124
52
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Article Info
doi: 10.3963/j.issn.1001-487X.2024.02.030
  • Receive Date：2023-07-31
  • Online Date：2026-03-20
  • Published：2024-06-01
Article Data
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History
  • Received：2023-07-31
Funding
National Natural Science Foundation of China (NSFC) project(12272184)
China Postdoctoral Science Foundation(2023M731695)
Fundamental Research Funds for the Central Universities(30922010503)
Jiangsu Funding Program for Excellent Postdoctoral Talent
Affiliations
    1.School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
    2.NUST & CBSW Safety science and technology Co., LTD., Nanjing 210094, China
    3.Beijing Institute of Aerospace Testing Technology, Beijing 100074, China
    4.An Hui Tianming Blasting Engineering Co., Ltd., Chuzhou 239000, China

Corresponding:

XU Sen (1981-), Professor, mainly engaged in explosion mechanics, detonation of energetic materials and risk classification, (E-mail) .
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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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