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Overpressure Comparison of Blasting in Air and Special-Made Hemispherical Structure
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Yan-Dong QU1, Hong-Hao YAN2, Xiao-Jie LI2, Hua-Xin LIU1
Chinese Journal of High Pressure Physics | 2012, 26(1) : 95 - 101
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Chinese Journal of High Pressure Physics | 2012, 26(1): 95-101
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Overpressure Comparison of Blasting in Air and Special-Made Hemispherical Structure
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Yan-Dong QU1, Hong-Hao YAN2, Xiao-Jie LI2, Hua-Xin LIU1
Affiliations
  • 1.College of Civil Engineering and Architecture, Liaoning University of Technology, Jinzhou 121001, China
  • 2.Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian 116023, China

    • QU Yan-Dong (1978-), male, Ph. D., associate professor, tutor for graduates, major in explosive mechanics and preparation of nanosized materials by detonation technique. E-mail:

About Author:

QU Yan-Dong (1978-), male, Ph. D., associate professor, tutor for graduates, major in explosive mechanics and preparation of nanosized materials by detonation technique. E-mail:

Published: 2012-02-15
Outline
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The explosive welding process always accompanies with explosive vibration, shock waves, overpressure, hazardous gases and noises. A method of designing a hemispherical structure with 36 m in diameter, whose entrance and smoke extraction opening are 8 m in height and 8 m in diameter respectively, is proposed to decrease the influence of overpressure during the explosive welding process. In order to evaluate the rationality and efficiency of the special-made hemispherical structure, the overpressure comparative experiments of blasting are carried out in air and in the special-made hemispherical structure with a 1/6 scale factor. The experimental results prove that the hemispherical structure with a 1/6 scale factor reduces the overpressure efficiently, especially for the propagation distance longer than 20 m. Furthermore, the overpressure along the tangent direction (perpendicular to the entrance of the hemispherical structure) is lowered more than that along the radial direction (the entrance of the hemispherical structure) for the same propagation distance. Considering the characteristics of propagation and reflection of shock waves, the possible reasons for the overpressure decreasing of blasting in the hemispherical structure are also discussed.

shock waves  /  overpressure  /  explosion mechanics  /  explosive welding
曲艳东, 闫鸿浩, 李晓杰, 刘华新. 裸爆和特制半球形结构内爆超压对比实验研究. 高压物理学报, 2012 , 26 (1) : 95 -101 .
Yan-Dong QU, Hong-Hao YAN, Xiao-Jie LI, Hua-Xin LIU. Overpressure Comparison of Blasting in Air and Special-Made Hemispherical Structure[J]. Chinese Journal of High Pressure Physics, 2012 , 26 (1) : 95 -101 .
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Funding
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  • Scientific Research Fund of Liaoning Provincial Education Department(L2011095)
  • Doctoral Scientific Research Foundation of Liaoning University of Technology(Bo9003)
  • Scientific Research Foundation for Teachers in Liaoning University of Technology(X201128)
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Year 2012 volume 26 Issue 1
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Article Info
  • Receive Date：2010-08-30
  • Online Date：2026-11-05
  • Published：2012-02-15
Article Data
Affiliations
History
  • Received：2010-08-30
  • Revised：2011-03-26
Funding
Scientific Research Fund of Liaoning Provincial Education Department(L2011095)
Doctoral Scientific Research Foundation of Liaoning University of Technology(Bo9003)
Scientific Research Foundation for Teachers in Liaoning University of Technology(X201128)
Affiliations
    1.College of Civil Engineering and Architecture, Liaoning University of Technology, Jinzhou 121001, China
    2.Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian 116023, 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
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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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