| 姚韦靖,刘宇,庞建勇,钟能.围岩与隔热结构热学参数对巷道温度场影响的正交数值模拟[J].安徽建筑大学学报,2023,31(): |
| 围岩与隔热结构热学参数对巷道温度场影响的正交数值模拟 |
| The Orthogonal Numerical Simulation Experiment of the Effect of Surrounding Rock and Heat Insulation Structure Thermal Parameters on Roadway Temperature Field |
| 投稿时间：2022-11-28 修订日期：2022-12-19 |
| DOI： |
| 中文关键词: 高温巷道 温度场 数值模拟 正交试验 影响因素 回归分析 |
| 英文关键词: high-temperature roadway temperature field numerical simulation orthogonal test influence factor regression analysis |
| 基金项目:矿山建设工程安徽省高校重点实验室开放基金(GXZDSYS2022106)；安徽省高等学校自然科学研究重点项目(KJ2020A0297)；国家级大学生创新训练计划项目(202210361031) |
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| 中文摘要: |
| 为研究高温巷道围岩-隔热支护体系热学参数对温度场的影响，建立25组数值试验模拟巷道温度场，选定衬砌热导率、衬砌厚度、原岩热导率、原岩温度为影响因素，以巷道壁面温度、调热圈半径、壁面与原岩温度差为目标因子，进行正交试验分析，得到各因素对壁面温度、调热圈半径影响顺序为原岩热导率＞原岩温度＞衬砌厚度＞衬砌热导率；对壁面与原岩温度差影响顺序为衬砌热导率＞原岩温度＞原岩热导率＞衬砌厚度。最后，拟合出壁面温度、调热圈半径的热学参数公式，拟合程度较高。结果表明：采用低热导率的隔热喷层能够延缓围岩散热和减少巷道风流对围岩温度场的扰动，但围岩自身热物理属性对巷道温度场起决定性作用。研究对主动隔热巷道温度场分布，合理安排隔热支护有一定积极意义。 |
| 英文摘要: |
| To study the influence of thermal parameters on temperature field of surrounding rock-thermal insulating support system under roadway with high temperature, 25 sets of numerical experimental models were established to simulate the temperature field of roadway. The lining thermal conductivity, lining thickness, original rock thermal conductivity and temperature was selected as influence factors, and the roadway wall temperature, heat-adjusting layer and temperature difference between wall and original surrounding rock were considered as target factors. According to the orthogonal analysis, it is concluded that the effects on the wall temperature and heat-adjusting layer were ranked in the order of original rock thermal conductivity＞temperature＞lining thermal conductivity＞lining thickness. The effects on the temperature difference between wall and original surrounding rock were ranked in the order of lining thermal conductivity＞temperature＞original rock thermal conductivity＞lining thickness. Finally, the wall temperature and heat-adjusting layer thermal calculation formula were fitted, and the fitting degrees were relative high. The results show that the thermal insulation spray layer with low thermal conductivity can delay the heat dissipation of surrounding rock and reduce the disturbance of air flow to surrounding rock, but the thermal physical properties of surrounding rock play a decisive role in the temperature field distribution of roadway. The study has positive significance to the temperature field distribution of active heat insulation roadway and the rational arrangement of thermal insulating support. |
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