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- W2384920262 abstract "This paper intends to gain a better understanding of the heat distribution in a loose coal temperature field in an artificial experimental coal stockpile on the ground-surface instead of in the highly restrained underground conditions in a real coal-mine. Based on the testing data, we have done experiments and analysis of the various distribution situations in the field. And the results of our analysis show that such a field in loose coalmine is related to heat source intensity , time, distance, water and leakage, etc. But the temperature in the loose coal mine tends to follow a negative exponential function in relation to its distance from its heating source, and declines at the fastest rate. When the test points are away form the heat source in a certain distance (about 0.3 m), its temperature would increase much slower over the time, at the given point. And, if a sensor's temperature continues to rise slowly, it would be likely that there might be the fire source nearby. It is evident that the heat source intensity plays the decisive role during the same period of time, that is to say, the greater the heat intensity, the greater the temperature changes. Affected by the external temperature, the temperature fluctuation at the point closer to the mining working face in the loose coal mine tends to be more significant, but such effects can be eliminated once the test points reach some depth level ( 0.3 m) . Since there exists some gap effect of the thermal diffusion caused by the temperature difference in a loose coal mine, the temperature of the testing points at the top of the heat source would increase faster than all the others in the same horizontal plane, when the local heating source used temperature method, if there are a number of test points in a detection area, of which temperature fast changing generally implies near or above the heat source. When the loose coal contains water, the existence of heat and moisture migration will affect the rise in the temperature at some places of the loose coal mine, which suggests an upward trend after the first drop." @default.
- W2384920262 created "2016-06-24" @default.
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- W2384920262 date "2010-01-01" @default.
- W2384920262 modified "2023-09-25" @default.
- W2384920262 title "Investigative experiment on the loose coal heating field" @default.
- W2384920262 hasPublicationYear "2010" @default.
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