Mechanism and Controlling of Outcrop Coal Fire

机译：露头煤火的机理与控制

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A model of air flow and reaction of coal in such environment is put forward. On the surface of high temperature coal, oxidation and gasification reaction takes place and produces CO. The CO produced flows upward and burns in porous rocks to generate flaming fire. Since water and CO_2 are reactive with high-temperature coal, injecting water or CO_2 sometimes can even enhance oxidation rate of the coal and may cause disastrous explosion, though drenching large amount of water can lower temperature of coal. It proved that combined measure of excavating fire, covering outcrop of coal and injecting composite gel and slurry is an effective and efficient means of extinguishing the fire.

机译：提出了在这种环境下煤的空气流动和反应的模型。在高温煤的表面上，发生氧化和气化反应并生成一氧化碳。生成的一氧化碳向上流动并在多孔岩石中燃烧，从而产生明火。由于水和CO_2与高温煤具有反应性，因此注入水或CO_2有时甚至可以提高煤的氧化速率，并且可能造成灾难性的爆炸，尽管淋湿大量的水可以降低煤的温度。实践证明，联合采煤，覆盖煤层露头，注入复合胶体和矿浆的综合措施是一种有效而有效的灭火方法。

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来源
《International Symposium on Safety Science and Technology; 20061024-27; Changsha(CN)》|2006年|P.1421-1424|共4页
会议地点 Changsha(CN)
作者
ZHANG Xinhai; XU Jianzhong; XI Guang; DENG Jun; WEN Hu;
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作者单位

Energy and Power School, Xi'an Jiaotong University, Xi'an 710049, Shanxi, China;

Xi'an University of Science Technology, Xi'an 710054, Shaanxi, China;

Engineering Thermo-physics Institute, China Academy of Science, Beijing 100080, China;

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原文格式 PDF
正文语种 eng
中图分类安全工程;
关键词
coal fire; physical model; reaction mechanism; control;

机译：燃煤；物理模型；反应机理；控制;

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Mechanism and Controlling of Outcrop Coal Fire

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