基于温度场迭加法解析煤矸石山内部温度场

Internal Temperature Field Analysis of Waste Piles Based on Temperature Field Superposition

为了探测自燃煤矸石山内部温度随时间和深度的变化情况,对煤矸石山的自燃深度和时间进行测算及预警。基于热传导理论模型,采用热源温度场迭加法解析自燃煤矸石山内部温度场。通过野外实际实验模拟,采用温度场模型对实验数据进行解析计算,得出结论:该模型适用于自燃煤矸石山内部温度场的解析计算,且计算简单,误差基本控制在10℃范围内,最大误差为20℃,模型精度较高,对自燃煤矸石山的火源位置探测及预警具有重要的指导意义。

In order to explore the internal temperature of spontaneous combusting waste piles varying with time and depth,the depth and time of waste piles spontaneous combustion was detected and early warned. The temperature field superposition is adopted to analyze its internal temperature field based on the heat conduction theory model. According to the real field simulation,the experimental data are analyzed and calculated with the temperature field model. The results shows that： the model can be used in analyzing and calculating the internal temperature field of spontaneous combusting waste piles,with easy operation. The error is controlled below 10 ℃,and the maximum error is 20 ℃. With a high precision,the model provides an important guide to detect and warn the firing location of spontaneous combusting waste piles.