矿井避难硐室的热负荷计算与分析

通过对影响避难硐室热负荷各种因素的分析,基于半无限大物体传热模型,建立了避难硐室的传热计算微分方程。分别采用解析法、一维传热数值解法和三维数值解法对硐室岩体的传热进行了计算与对比,与此同时,研究了岩体初始温度、岩体热物性和舱体控制温度等参数对硐室热负荷的影响。结果表明：一维传热数值解法可用于硐室岩体计算;岩体的初始温度和岩体的热扩散系数对硐室热负荷的影响显著,在硐室设计前必须对岩体温度和热扩散系数进行详细测量。该研究工作可对于避难硐室的结构设计和制冷量的确定提供参考。

Calculation and Analysis on Thermal Load of Mine Refuge Chamber

With the analysis on different factors affected to the thermal load of the mine refuge chamber,based on the heat conducting model of the semi-infinite large mass,a differential equation of the heat conducted calculation for the mine refuge chamber was established.Individually,the analysis method,the 1D heat conducted numerical solution and the 3D numerical solution were applied to the calculation and comparison on the heat conduction of the rock mass for the refuge chamber.Meanwhile,the rock initial temperature,rock thermal properties features,chamber in door controlled temperature and other parameters affected to the chamber thermal load were studied.The study results showed that the rock thermal conduction of the chamber was mainly a 1D thermal conduction.The rock initial temperature and the rock heat spreading coefficient would be obvious affected to the thermal load of the chamber.Before the design of the mine refuge chamber,a site measurement and detail survey should be conducted on the rock temperature and the heat spreading coefficient.The study work could provide the references to the structure design of the refuge chamber and the determination of the refrigeration volume.