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Simulation study on heat insulation and cooling of deep shaft tunnel with different heat insulation materials
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Bo YOU, Daxiong CUI, Heqing LIU, Yi LU, Xinyu YANG
China Safety Science Journal | 2024, 34(2) : 153 - 160
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China Safety Science Journal | 2024, 34(2): 153-160
Safety engineering technology
Simulation study on heat insulation and cooling of deep shaft tunnel with different heat insulation materials
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Bo YOU, Daxiong CUI, Heqing LIU, Yi LU, Xinyu YANG
Affiliations
  • School of Resources,Environment and Safety Engineering,Hunan University of Science and Technology,Xiangtan Hunan 411201,China
Published: 2024-02-28 doi: 10.16265/j.cnki.issn1003-3033.2024.02.0748
Outline
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To solve the problem of heat damage caused by the continuous extension of coal mining depth,and to reveal the distribution characteristics of the temperature field in the deep-shaft roadway,five kinds of mining thermal insulation materials were selected to carry out the study of thermal insulation and cooling in the deep-shaft roadway,to analyze the effects of different thicknesses of the thermal insulation layer and different initial temperatures of the peripheral rock on the temperature field of the peripheral rock,the radius of the heat-regulating circle,and the temperature change of the wind flow in the roadway,and to analyze the evolution characteristics of the peripheral rock temperature field in the vicinity of the thermal insulation layer. The results show that foam heat-insulating concrete has the best heat-insulating performance and the lowest economic cost. The selection of lower thermal conductivity of the insulation layer helps to improve the thermal insulation effect of the insulation layer,and 5-10 cm is the best thickness of insulation layer,temperature field is consistent with the spatial distribution of peripheral rock layer,anchor spraying layer,and insulation layer,thermal conductivity of insulation material is negatively correlated with the tunnel peripheral rock temperature gradient,thickness of insulation layer,and temperature of the original rock are positively correlated with the tunnel peripheral rock temperature gradient,and thickness and temperature of insulation layer have a significant influence on radius of heat-regulating circle. Temperature has a certain degree of influence on radius of heat-regulating circle,compared with the roadway without a heat-insulating layer,roadway heat-insulating effect of cooling effect is significant.

insulation materials  /  tunnel airflow  /  temperature field of surrounding rock  /  temperature gradient  /  heat regulating ring  /  thermal insulation effect
Bo YOU, Daxiong CUI, Heqing LIU, Yi LU, Xinyu YANG. Simulation study on heat insulation and cooling of deep shaft tunnel with different heat insulation materials[J]. China Safety Science Journal, 2024 , 34 (2) : 153 -160 . DOI: 10.16265/j.cnki.issn1003-3033.2024.02.0748
Year 2024 volume 34 Issue 2
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Article Info
doi: 10.16265/j.cnki.issn1003-3033.2024.02.0748
  • Receive Date:2023-08-11
  • Online Date:2025-07-09
  • Published:2024-02-28
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  • Received:2023-08-11
  • Revised:2023-11-17
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    School of Resources,Environment and Safety Engineering,Hunan University of Science and Technology,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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