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Analysis of influence of laying heat insulation layer on cooling effect of roadway
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Daxiong CUI1, Bo YOU1, 2, 3, Ke GAO2, Ming YANG4, Qiaoyun HAN1, Yuansen CHEN1
China Safety Science Journal | 2024, 34(11) : 153 - 162
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China Safety Science Journal | 2024, 34(11): 153-162
Safety engineering technology
Analysis of influence of laying heat insulation layer on cooling effect of roadway
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Daxiong CUI1, Bo YOU1, 2, 3, Ke GAO2, Ming YANG4, Qiaoyun HAN1, Yuansen CHEN1
Affiliations
  • 1 School of Resource Environment and Safety Engineering,Hunan University of Science and Technology,Xiangtan Hunan 411201,China
  • 2 Key Laboratory of Mine Thermodynamic Disasters and Control of Ministry of Education (Liaoning Technical University),Huludao Liaoning 125105,China
  • 3 State Key Laboratory Cultivation Base for Gas Geology and Gas Control,Henan Polytechnic University,Jiaozuo Henan 454003,China
  • 4 School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo Henan 454003,China
Published: 2024-11-28 doi: 10.16265/j.cnki.issn1003-3033.2024.11.0315
Outline
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In order to solve the heat damage issue brought by deep mining in coal mines,based on ANSYS simulation software,the roadway heat insulation model was constructed. The influence of basic parameters of different heat insulation layers and laying methods on the roadway wall structure was analyzed,and the cooling effect of the heat insulation roadway was further investigated. The results of the study show that the laying of the heat insulation layer could reduce the radius of the peripheral rock heat-regulating circle and slow down the heat dissipation of the peripheral rock,and the three ways of laying the heat insulation layer have little effect on the temperature field of the peripheral rock. Compared with the temperature of the non-insulated support layer,the average temperature of the support layer is reduced significantly by laying of the heat insulation layer in the rock-adhering type,whereas the opposite is true for wall-adhering type and the sandwich type. The increase in the thickness of the heat insulation layer and the decrease in the heat conduction coefficient of heat-insulating material could increase the heat-insulating effect,and 7cm is the optimal thickness of heat insulation layer. Excessive inlet wind speed or air temperature will affect the cooling effect of heat-insulated roadway. Heat-insulated roadway is suitable for high temperature roadway with low wind speed,low inlet air temperature and long ventilation distance.

insulation layer  /  roadway insulation  /  cooling effect  /  temperature field of surrounding rock  /  temperature gradient  /  airflow temperature
Daxiong CUI, Bo YOU, Ke GAO, Ming YANG, Qiaoyun HAN, Yuansen CHEN. Analysis of influence of laying heat insulation layer on cooling effect of roadway[J]. China Safety Science Journal, 2024 , 34 (11) : 153 -162 . DOI: 10.16265/j.cnki.issn1003-3033.2024.11.0315
Year 2024 volume 34 Issue 11
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Article Info
doi: 10.16265/j.cnki.issn1003-3033.2024.11.0315
  • Receive Date:2024-06-10
  • Online Date:2025-07-09
  • Published:2024-11-28
Article Data
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History
  • Received:2024-06-10
  • Revised:2024-08-21
Funding
Affiliations
    1 School of Resource Environment and Safety Engineering,Hunan University of Science and Technology,Xiangtan Hunan 411201,China
    2 Key Laboratory of Mine Thermodynamic Disasters and Control of Ministry of Education (Liaoning Technical University),Huludao Liaoning 125105,China
    3 State Key Laboratory Cultivation Base for Gas Geology and Gas Control,Henan Polytechnic University,Jiaozuo Henan 454003,China
    4 School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo Henan 454003,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
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Genus
种数
Number of
species
占总种数比例
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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