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Distribution of Impact Pressure on Hole Wall in Deep-Hole Blasting with Multi-Stage Axial Air Deck
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Xiaoming LOU1, 2, Zhiheng TANG1, 2, Mingyuan NIU3, Rizong LIN3, Lingfeng ZENG3
Mining and Metallurgical Engineering | 2024, 44(1) : 6 - 11
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Mining and Metallurgical Engineering | 2024, 44(1): 6-11
• MINING •
Distribution of Impact Pressure on Hole Wall in Deep-Hole Blasting with Multi-Stage Axial Air Deck
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Xiaoming LOU1, 2, Zhiheng TANG1, 2, Mingyuan NIU3, Rizong LIN3, Lingfeng ZENG3
Affiliations
  • 1.Zijin School of Geology and Mining, Fuzhou University, Fuzhou 350108, Fujian, China
  • 2.Institute of Explosion Technology, Fuzhou University, Fuzhou 350108, Fujian, China
  • 3.Zijin Mining Construction Co Ltd, Xiamen 361026, Fujian, China
Published: 2024-02-01 doi: 10.3969/j.issn.0253-6099.2024.01.002
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In order to determine the reasonable air-deck length in underground vertical deep-hole blasting, the internal distribution function of impact pressure on hole wall with different air-deck length in multi-stage air deck blasting was analyzed based on the detonation wave theory. According to the Mises criterion, the reasonable reference values of air-deck length were obtained for different kinds of rock, which was verified by numerical simulation and on-site blasting test. The results show that the impact pressure on the hole wall of the air deck drops abruptly from both sides to the center along the axis of the hole, but increases slightly around the midpoint, and the pressure distribution presents a symmetrical W-shaped curve, with much higher values on two sides, lower in the middle section, and slightly higher around the center.

deep-hole blasting  /  axial decoupled charge  /  multistage air deck  /  impact pressure on hole wall  /  numerical simulation
Xiaoming LOU, Zhiheng TANG, Mingyuan NIU, Rizong LIN, Lingfeng ZENG. Distribution of Impact Pressure on Hole Wall in Deep-Hole Blasting with Multi-Stage Axial Air Deck[J]. Mining and Metallurgical Engineering, 2024 , 44 (1) : 6 -11 . DOI: 10.3969/j.issn.0253-6099.2024.01.002
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Article Info
doi: 10.3969/j.issn.0253-6099.2024.01.002
  • Receive Date：2023-08-23
  • Online Date：2026-03-20
  • Published：2024-02-01
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  • Received：2023-08-23
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Affiliations
    1.Zijin School of Geology and Mining, Fuzhou University, Fuzhou 350108, Fujian, China
    2.Institute of Explosion Technology, Fuzhou University, Fuzhou 350108, Fujian, China
    3.Zijin Mining Construction Co Ltd, Xiamen 361026, Fujian, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2024.01.002
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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
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Genus		 种数
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Percentage of total
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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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