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Inverse Calculation of Blast Source Parameters in Gold Mine Explosion Accident
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Xin LI1, Gang ZHANG2, Xian-feng CHEN3, Yi LI3
Blasting | 2023, 40(2) : 24 - 28
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Blasting | 2023, 40(2): 24-28
• THEORETICAL AND TECHNOLOGICAL EXPLORATION •
Inverse Calculation of Blast Source Parameters in Gold Mine Explosion Accident
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Xin LI1, Gang ZHANG2, Xian-feng CHEN3, Yi LI3
Affiliations
  • 1.Huangshi Fire Rescue Detachment, Huangshi 435000, China
  • 2.Nanyang Explosion Proof Electric Research Institute, Nanyang 473000, China
  • 3.Wuhan University of Technology, Wuhan 430070, China
Published: 2023-06-01 doi: 10.3963/j.issn.1001-487X.2023.02.004
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No matter violent & terrorist incidents or explosion accidents, parameters related to the explosion source, such as explosive equivalent, are always important for the post-explosion accident investigation. The characteristic trace of the medium under explosion load is an important basis for tracing the cause of an explosion accident and obtaining the corresponding explosion source parameters. After reviewing the typical research progress of explosive characteristic traces, including explosion crater, damage of surrounding buildings, and personnel damage degree, it is found that there are significant differences in the shape and size among the explosion craters created by near surface explosions, exposed surface explosions and explosions with certain depth. This research is based on an underground explosion accident in a gold mine in 2021, which was caused by that the dropped welding slag from the shaft ignited the underground combustible materials and explosive equipment. According to the sizes of three explosion craters formed at the accident site, the TNT equivalents are calculated as 654.17 kg, 232.49 kg and 193.83 kg, respectively. Then, the particle vibration velocity and the shock wave overpressure of the shaft wall are calculated as 40 cm/s and 2129 Pa, according to the TNT equivalents. The calculation results are consistent with the damage degree of the cage and shaft wall.

explosive characteristic traces  /  explosion crater  /  explosive equivalent  /  overpressure
Xin LI, Gang ZHANG, Xian-feng CHEN, Yi LI. Inverse Calculation of Blast Source Parameters in Gold Mine Explosion Accident[J]. Blasting, 2023 , 40 (2) : 24 -28 . DOI: 10.3963/j.issn.1001-487X.2023.02.004
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Year 2023 volume 40 Issue 2
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Article Info
doi: 10.3963/j.issn.1001-487X.2023.02.004
  • Receive Date：2023-04-27
  • Online Date：2026-03-18
  • Published：2023-06-01
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  • Received：2023-04-27
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Affiliations
    1.Huangshi Fire Rescue Detachment, Huangshi 435000, China
    2.Nanyang Explosion Proof Electric Research Institute, Nanyang 473000, China
    3.Wuhan University of Technology, Wuhan 430070, China
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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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