主动隔热巷道隔热层热物性参数对隔热效果的影响  

Thermal Insulation Performance Affected by Thermal Physical Parameters of Thermal Insulation Layer in Active Thermal Insulation Tunnel

作　　者：周西华[1,2,3] 唐小煜 宋东平[1,2,3] ZHOU Xihua;TANG Xiaoyu;SONG Dongping(College of Safety Science and Engineering,Liaoning Technical University,Fuxin 123000,China;Hunan Provincial Key Laboratory of Safe Mining Techniques of Coal Mines,Hunan University of Science and Technology, Xiangtan 411201, China;Key Laboratory of Thermal Disaster and Prevention,Ministry of Education,Fuxin 123000,China)

机构地区：[1]辽宁工程技术大学安全科学与工程学院,辽宁阜新123000 [2]湖南科技大学煤矿安全开采技术湖南省重点实验室,湖南湘潭411201 [3]矿山热动力灾害与防治教育部重点实验室,辽宁阜新123000

出　　处：《矿业安全与环保》2019年第1期14-18,共5页Mining Safety & Environmental Protection

基　　金：国家自然科学基金项目(51274115);煤矿安全开采技术湖南省重点实验室开放基金项目(201501)

摘　　要：为得到主动隔热巷道隔热层热物性参数对隔热效果的影响规律,建立了主动隔热巷道风流与围岩的气—固耦合传热模型。选取8种建筑保温材料的热物性参数进行数值模拟,结果表明:不论巷道是否构建有隔热层,巷道围岩的散热量都与通风时间呈正幂指数关系;巷道构建隔热层后,减少的围岩散热量与隔热层的导热系数呈负幂指数关系,同一地点的风流温度降低值与隔热层的导热系数呈负指数关系。隔热层导热系数是影响其隔热效果的主要因素,隔热层的导热系数越小,隔热效果越明显。In order to obtain the influence law of thermal property parameters of thermal insulation layer on thermal insulation effect of active thermal insulation roadway,a gas-solid coupling heat transfer model of airflow and surrounding rock in active thermal insulation roadway was established.The thermophysical parameters of 8 materials for building thermal insulation were selected for numerical simulation.The results show that the heat dissipation of roadway surrounding rock has a positive exponential relationship with ventilation time,regardless of whether the roadway is constructed with thermal insulation layer or not;after the thermal insulation layer is constructed in the roadway,there is a negative power exponential relationship between the heat loss of the reduced surrounding rock and the thermal conductivity of the thermal insulation layer,the decreasing value of airflow temperature at the same location has a negative exponential relationship with the thermal conductivity of the thermal insulation layer.Coefficient of heat conduction of thermal insulation layer is the main factor that affects its heat insulation effect,and the smaller the thermal conductivity of the thermal insulation layer,the more obvious the thermal insulation effect.

关 键 词：深部矿井 高温矿井 主动隔热 隔热层 热物性参数 隔热效果 热害防治 

分 类 号：TD727.2[矿业工程—矿井通风与安全]