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Damage characteristics of roadway wall under dynamic-static loads by gas explosion impact and geostress
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Zhenzhen JIA1, 2, 3, Qing YE1, 2, 3, Zhuohua YANG1
China Safety Science Journal | 2024, 34(10) : 116 - 123
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China Safety Science Journal | 2024, 34(10): 116-123
• Safety engineering technology •
Damage characteristics of roadway wall under dynamic-static loads by gas explosion impact and geostress
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Zhenzhen JIA1, 2, 3, Qing YE1, 2, 3, Zhuohua YANG1
Affiliations
  • 1 School of Resource，Environment and Safety Engineering，Hunan University of Science and Technology，Xiangtan Hunan 411101，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: 2024-10-28 doi: 10.16265/j.cnki.issn1003-3033.2024.10.0037
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In order to study the wall dynamic response and damage characteristics of deep roadway with high geostress in gas explosion accidents，a mathematical model and a physical analysis model of the roadway wall dynamic response damage were established by using LS-Dyna software，and the numerical model was verified. The displacement，stress and damage characteristics of the roadway wall under the dynamic and static loads of gas explosion impact and geostress were analyzed by numerical simulation. The response and damage change of the roadway wall under different geostress conditions (horizontal geostress and vertical geostress) and gas explosion impact loads were investigated. The results show that high geostress causes the initial damage deformation. The stress concentration and initial damage are greatest at the corner，but its dynamic response is smaller than that at the roof. Under the dynamic and static loads of gas explosion impact and geostress，the damage strain of each part of the roadway increases with the increase of geostress，among which the damage degree at the corners is most affected and most serious，followed by the roof position. The increase of geostress makes the initial damage deformation of the roadway wall more serious，but it obviously weakens the propagation of the shock wave in the surrounding rock.

gas explosion impact  /  geostress  /  dynamic and static load  /  roadway wall  /  damage
Zhenzhen JIA, Qing YE, Zhuohua YANG. Damage characteristics of roadway wall under dynamic-static loads by gas explosion impact and geostress[J]. China Safety Science Journal, 2024 , 34 (10) : 116 -123 . DOI: 10.16265/j.cnki.issn1003-3033.2024.10.0037
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Year 2024 volume 34 Issue 10
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Article Info
doi: 10.16265/j.cnki.issn1003-3033.2024.10.0037
  • Receive Date：2024-06-21
  • Online Date：2025-07-09
  • Published：2024-10-28
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History
  • Received：2024-06-21
  • Revised：2024-08-22
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Affiliations
    1 School of Resource，Environment and Safety Engineering，Hunan University of Science and Technology，Xiangtan Hunan 411101，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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https://castjournals.cast.org.cn/joweb/zgaqkxxb/EN/10.16265/j.cnki.issn1003-3033.2024.10.0037
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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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