煤岩体导热系数试验及单因子方差分析

发布时间：2018-07-07 22:24

本文选题：安全工程 + 导热系数　；参考：《安全与环境学报》2017年04期

【摘要】：为研究温度和含水量对煤、岩体导热系数的影响,采用激光闪射法测得8种煤、岩样品的导热特性参数;利用单因子方差分析方法对不同温度条件下的煤岩体导热系数测定结果进行比较分析,结果表明:煤岩体的导热系数随温度升高线性降低,随含水量增大而增大;岩石的导热系数大于煤体的导热系数,岩石的导热系数为1~5W/(m·K),煤的导热系数为0.1~0.5 W/(m·K);拟合得到不同煤体导热系数和温度的关系式,其拟合函数相关度在0.93左右,最大相对误差为2.18%。因此,可利用拟合函数和测试结果预测测试矿井的煤岩体导热系数。
[Abstract]:In order to study the influence of temperature and water content on the thermal conductivity of coal and rock mass, the thermal conductivity parameters of 8 kinds of coal and rock samples were measured by laser flashover method. The measurement results of thermal conductivity of coal and rock mass under different temperature conditions are compared and analyzed by using single factor variance analysis method. The results show that the thermal conductivity of coal and rock mass decreases linearly with the increase of temperature and increases with the increase of water content. The thermal conductivity of rock is larger than that of coal, the thermal conductivity of rock is 1 ~ 5 W / (m K), the coefficient of thermal conductivity of coal is 0.1 ~ 0. 5 W / (m K), the relationship between thermal conductivity of different coal and temperature is obtained, the correlation of fitting function is about 0.93, and the maximum relative error is 2.18. Therefore, the thermal conductivity of coal and rock mass can be predicted by fitting function and test results.
【作者单位】：辽宁工程技术大学安全科学与工程学院矿山热动力灾害与防治教育部重点实验室;
【基金】：国家自然科学基金项目(51274115)
【分类号】：TD727.2

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