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Study on impact damage characteristics of roadway caused by double explosion source gas explosion
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Yangzhou TENG1, Qing YE1, 2, 3, **, Zhenzhen JIA1, 2, 3
China Safety Science Journal | 2025, 35(2) : 196 - 202
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China Safety Science Journal | 2025, 35(2): 196-202
Safety engineering technology
Study on impact damage characteristics of roadway caused by double explosion source gas explosion
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Yangzhou TENG1, Qing YE1, 2, 3, **, Zhenzhen JIA1, 2, 3
Affiliations
  • 1 School of Resource,Environment and Safety Engineering,Hunan University of Science and Technology,Xiangtan Hunan 411201,China
  • 2 Hunan Engineering Research Center for Fire and Explosion Prevention Materials and Equipment in Underground Spaces,Xiangtan Hunan 411201,China
  • 3 Key Laboratory of Fire and Explosion Prevention and Emergency Technology in Hunan Province,Xiangtan Hunan 411201,China
Published: 2025-02-28 doi: 10.16265/j.cnki.issn1003-3033.2025.02.1648
Outline
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In order to study the damage characteristics of gas explosion from double explosion sources in roadway wall,the gas explosion model of roadway with double explosion sources was established by using LS-Dyna,and the pressure propagation and impact stress of shock wave in roadway under the gas explosion action of double explosion sources were analyzed. The change of axial pressure in the roadway and the damage to surrounding rock in the symmetrical section were measured when gas explosion with double explosion sources occurred. The research results show that the interaction between the shock waves generated by double explosion sources in the roadway results in a significant disparity in pressure compared to that of a single explosion source. At each axial position where the gas explosions from the double sources occur,there are two distinct pressure peaks,with the magnitude of the first peak negatively correlated with its proximity to the nearest explosion source. The value of the second peak pressure is negatively correlated with its distance from the collision surface where shock waves from two sources meet. The peak pressures before and after this collision were not a simply linear superimposition,but a sharp rise. The damage evolution process on surrounding rock wall surfaces resembles that of diffusion for shock wave pressure propagation and shock stress,although it is lagging these two phenomena. Furthermore,the duration of shock wave action plays a crucial role in determining the thickness of damage inflicted on surrounding rock formations,with roof damage being most severe in roadways subjected to double explosion source gas explosions.

double explosion sources  /  gas explosion  /  roadway  /  shock wave  /  impact stress  /  damage characteristics
Yangzhou TENG, Qing YE, Zhenzhen JIA. Study on impact damage characteristics of roadway caused by double explosion source gas explosion[J]. China Safety Science Journal, 2025 , 35 (2) : 196 -202 . DOI: 10.16265/j.cnki.issn1003-3033.2025.02.1648
Year 2025 volume 35 Issue 2
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Article Info
doi: 10.16265/j.cnki.issn1003-3033.2025.02.1648
  • Receive Date:2024-09-09
  • Online Date:2025-07-05
  • Published:2025-02-28
Article Data
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History
  • Received:2024-09-09
  • Revised:2024-11-11
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Affiliations
    1 School of Resource,Environment and Safety Engineering,Hunan University of Science and Technology,Xiangtan Hunan 411201,China
    2 Hunan Engineering Research Center for Fire and Explosion Prevention Materials and Equipment in Underground Spaces,Xiangtan Hunan 411201,China
    3 Key Laboratory of Fire and Explosion Prevention and Emergency Technology in Hunan Province,Xiangtan Hunan 411201,China
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

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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