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首页> 外文会议>2015 SME annual meeting amp; expo and CMA 117th national western mining conference: Mining: Navigating the global waters >A PRELIMINARY STUDY ON THERMAL PROBE TECHNOLOGY AGAINST COAL STORAGE PILE (GANGUE HILL) SPONTANEOUS COMBUSTION
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A PRELIMINARY STUDY ON THERMAL PROBE TECHNOLOGY AGAINST COAL STORAGE PILE (GANGUE HILL) SPONTANEOUS COMBUSTION

机译：煤S石山自燃的热探针技术初探

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摘要

The spontaneous combustion of coal storage pile(Gangue Hill) is one of the seriously threat encountered in coal mining and storage. The dynamic accumulation of internal heat in coal storage pile(Gangue Hill) provides continuous heat-source for coal spontaneous combustion. Combined with the features and characteristics of coal pile storage, a technology of heat pipe(HP) is applied to enhance heat transfer. In order to prevent spontaneous combustion of coal storage piles (hillock) due to regeneration, a method using heat pipes to destroy the heat preservation conditions of coal storage pile(Gangue Hill) is proposed, which reduces the risk of coal spontaneous combustion and prevents coal fire. A theoretical model of Coal-Thermosyphon has set up to analysis the radius of cooling effect area quantitatively. An experimental equipment of the heat transferring in a set of heat pipe, which used to study the influence on coal pile temperature distribution, has been designed. Results show, the heat pipe has a significant effect on inhibiting the coal spontaneous combustion process by destroy the heat preservation conditions of the coal. Under the experimental conditions, the most obvious coal temperature decline appears at radius 20.0mm around the pipe, dropped from 45.8℃ to 32.5℃, a decline of 29%; the coal pile temperature at radius 420mm from 12.9℃ to 12.4℃, a decline of 3.87%. And the research offers an effective and new approach in its application and promotion for preventing and controlling in coal spontaneous combustion.
机译：煤炭储存堆（G沟山）的自燃是煤矿开采和储存中遇到的严重威胁之一。储煤堆（刚格山）内部热量的动态积累为煤自燃提供了持续的热源。结合煤堆储运的特点和特点，应用热管技术提高换热效率。为了防止储煤堆（小丘）因再生而自燃，提出了一种利用热管破坏储煤堆（G石山）保温条件的方法，降低了煤自燃的风险，防止了煤的产生。火。建立了煤热管理论模型，对冷却效果区域的半径进行了定量分析。设计了一套热管传热实验装置，用于研究其对煤堆温度分布的影响。结果表明，通过破坏煤的保温条件，热管对抑制煤的自燃过程具有显著作用。在实验条件下，最明显的煤温下降出现在管材半径20.0mm附近，从45.8℃下降到32.5℃，下降了29％。半径420mm的煤堆温度从12.9℃降至12.4℃，下降了3.87％。该研究为预防和控制煤自燃提供了一种有效的新方法。

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