Simulated and experimental study on effect of thermal insulation layer on temperature field and heat dissipation of roadway surrounding rock
As mining activities extend deeper, intense heat dissipation from surrounding rock has become the most significant factor leading to heat hazards in deep mines. Laying the thermal insulation layer (TIL) along the roadway walls is an effective measure to reduce heat dissipation. This study is to inve...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-01-01
|
| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X23012662 |
| _version_ | 1797356852549255168 |
|---|---|
| author | Yueping Qin Haonan Hou Mingyan Guo Qiang Liu Fei Tang |
| author_facet | Yueping Qin Haonan Hou Mingyan Guo Qiang Liu Fei Tang |
| author_sort | Yueping Qin |
| collection | DOAJ |
| description | As mining activities extend deeper, intense heat dissipation from surrounding rock has become the most significant factor leading to heat hazards in deep mines. Laying the thermal insulation layer (TIL) along the roadway walls is an effective measure to reduce heat dissipation. This study is to investigate the temperature field and heat dissipation evolution of roadway surrounding rock after applying thermal insulation layer (TIL) by numerical simulation and similar experiment. The study shows that (i) The simulation curves agree well with the experimental data, which confirms the reliability of the mathematical model and numerical simulator; (ii) The application of TIL slows down the cooling of surrounding rock temperature field, the cooling ring radius decreased by 8.13 % after 10 years of ventilation; (iii) The effect of TIL on the equivalent thermal resistance (ETR) is most significant in early ventilation, and the thermal insulation effect decreases with time; (iv) The heat insulation rate is positively correlated with the TIL thickness and the convective heat transfer coefficient, and negatively with the thermal conductivity of TIL. This study provides the theoretical basis for the use of thermal insulation materials in underground mines. |
| first_indexed | 2024-03-08T14:34:42Z |
| format | Article |
| id | doaj.art-07128dcf92f247cca10c7a1a3434f690 |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-03-08T14:34:42Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-07128dcf92f247cca10c7a1a3434f6902024-01-12T04:57:07ZengElsevierCase Studies in Thermal Engineering2214-157X2024-01-0153103960Simulated and experimental study on effect of thermal insulation layer on temperature field and heat dissipation of roadway surrounding rockYueping Qin0Haonan Hou1Mingyan Guo2Qiang Liu3Fei Tang4School of Emergency Management and Safety Engineering, China University of Mining & Technology, Beijing, Beijing, 100083, PR China; Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources, China University of Mining & Technology, Beijing, Beijing, 100083, PR ChinaSchool of Emergency Management and Safety Engineering, China University of Mining & Technology, Beijing, Beijing, 100083, PR ChinaSchool of Emergency Management and Safety Engineering, China University of Mining & Technology, Beijing, Beijing, 100083, PR China; Corresponding author.School of Emergency Management and Safety Engineering, China University of Mining & Technology, Beijing, Beijing, 100083, PR ChinaSchool of Emergency Management and Safety Engineering, China University of Mining & Technology, Beijing, Beijing, 100083, PR ChinaAs mining activities extend deeper, intense heat dissipation from surrounding rock has become the most significant factor leading to heat hazards in deep mines. Laying the thermal insulation layer (TIL) along the roadway walls is an effective measure to reduce heat dissipation. This study is to investigate the temperature field and heat dissipation evolution of roadway surrounding rock after applying thermal insulation layer (TIL) by numerical simulation and similar experiment. The study shows that (i) The simulation curves agree well with the experimental data, which confirms the reliability of the mathematical model and numerical simulator; (ii) The application of TIL slows down the cooling of surrounding rock temperature field, the cooling ring radius decreased by 8.13 % after 10 years of ventilation; (iii) The effect of TIL on the equivalent thermal resistance (ETR) is most significant in early ventilation, and the thermal insulation effect decreases with time; (iv) The heat insulation rate is positively correlated with the TIL thickness and the convective heat transfer coefficient, and negatively with the thermal conductivity of TIL. This study provides the theoretical basis for the use of thermal insulation materials in underground mines.http://www.sciencedirect.com/science/article/pii/S2214157X23012662Mine heat hazardThermal insulation layerEquivalent thermal resistanceFinite volume methodSimilar experiment |
| spellingShingle | Yueping Qin Haonan Hou Mingyan Guo Qiang Liu Fei Tang Simulated and experimental study on effect of thermal insulation layer on temperature field and heat dissipation of roadway surrounding rock Case Studies in Thermal Engineering Mine heat hazard Thermal insulation layer Equivalent thermal resistance Finite volume method Similar experiment |
| title | Simulated and experimental study on effect of thermal insulation layer on temperature field and heat dissipation of roadway surrounding rock |
| title_full | Simulated and experimental study on effect of thermal insulation layer on temperature field and heat dissipation of roadway surrounding rock |
| title_fullStr | Simulated and experimental study on effect of thermal insulation layer on temperature field and heat dissipation of roadway surrounding rock |
| title_full_unstemmed | Simulated and experimental study on effect of thermal insulation layer on temperature field and heat dissipation of roadway surrounding rock |
| title_short | Simulated and experimental study on effect of thermal insulation layer on temperature field and heat dissipation of roadway surrounding rock |
| title_sort | simulated and experimental study on effect of thermal insulation layer on temperature field and heat dissipation of roadway surrounding rock |
| topic | Mine heat hazard Thermal insulation layer Equivalent thermal resistance Finite volume method Similar experiment |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X23012662 |
| work_keys_str_mv | AT yuepingqin simulatedandexperimentalstudyoneffectofthermalinsulationlayerontemperaturefieldandheatdissipationofroadwaysurroundingrock AT haonanhou simulatedandexperimentalstudyoneffectofthermalinsulationlayerontemperaturefieldandheatdissipationofroadwaysurroundingrock AT mingyanguo simulatedandexperimentalstudyoneffectofthermalinsulationlayerontemperaturefieldandheatdissipationofroadwaysurroundingrock AT qiangliu simulatedandexperimentalstudyoneffectofthermalinsulationlayerontemperaturefieldandheatdissipationofroadwaysurroundingrock AT feitang simulatedandexperimentalstudyoneffectofthermalinsulationlayerontemperaturefieldandheatdissipationofroadwaysurroundingrock |