Influence and sensitivity analysis of thermal parameters on temperature field distribution of active thermal insulated roadway in high temperature mine
Weijing Yao1
Jianyong Pang1
Qinyong Ma1
Happiness Lyimo2
1.School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,Anhui,China;Engineering Research Centre of Underground Mine Construction,Ministry of Education,Anhui University of Science and Technology,Huainan 232001,Anhui,China;State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines,Anhui University of Science and Technology,Huainan 232001,Anhui,China2.School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,Anhui,China
摘要：To study active heat insulation roadway in high temperature mines,the typical high temperature roadway of-965 m in Zhujidong Coal Mine of Anhui,China,is selected as prototype.The ANSYS numerical simulation method is used for sensitivity analysis of heat insulation layer with different thermal conductivity and thickness,as well as sur-rounding rock with different thermal conductivity and temperature on a heat-adjusting zone radius,surrounding rock temperature field and wall temperature.The results show that the heat-adjusting zone radius will entirely be in the right power index relationship to the ventilation time.Decrease in thermal conductivity and increase in thickness of insulation layer can effectively reduce the disturbance of airflow on the surrounding rock temperature,hence,beneficial for decreasing wall temperature.This favourable trend significantly decreases with ventilation time,increase in thermal conductivity and temperature of surrounding rock,heat-adjusting zone radius,surrounding rock temperature field,and wall temperature.Sensitivity analysis shows that the thermal physical properties of surrounding rock determine the temperature distribution of the roadway,hence,temperature of surrounding rock is considered as the most sensitive factor of all influencing factors.For the spray layer,thermal conductivity is more sensitive,compared to thickness.It is concluded that increase in the spray layer thickness is not as beneficial as using low thermal conductivity insulation material.Therefore,roadway preferential consideration should be given to the rocks with low temperature and thermal conductivity.The application of the insulation layer has positive significance for the thermal environment control in mine roadway,however,increase in the layer thickness without restriction has a limited effect on the thermal insulation.
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论文发表日期：2021-03-30
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：17( 47-63 )
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