煤矿井下封闭火区的燃烧状态与气体分析研究

发布时间：2018-04-02 10:01

本文选题：封闭火区　切入点：燃烧状态　出处：《中国矿业大学（北京）》2013年博士论文

【摘要】：论文首先对煤自燃气体变化规律进行实验研究，在此基础上对封闭火区燃烧状态判定的指标进行了总结。其次建立了高瓦斯矿井封闭火区注惰的数学模型，给出了求解该模型的定解条件，得到了高瓦斯矿井封闭火区注惰条件下，惰气射流的运移情况和很有可能发生瓦斯爆炸的结论，并认为对此类矿井在火灾前期应采取远距离封闭火区。然后对封闭火区气体的检测仪器设备和爆炸性分析技术展开了分析研究，构思出了气体爆炸危险趋势判断四方图，并对其计算和判断原理进行阐述、提出了详细的四方图作法步骤以及通过实例对其准确性进行了验证。最后，，通过增氧观测成功启封火区的实践应用，提出了增氧观测启封火区的技术，以及增氧期间依据火灾生成气体的浓度变化趋势来准确判断封闭火区燃烧状态的方法。
[Abstract]:This paper carried out the experimental study on the variation law of spontaneous combustion of coal gas, on the basis of the closed fire zone combustion state index are summarized. The mathematical model of high gas coal mine closed fire zone inert gas injection, the definite condition of the model are given, the high gas coal mine closed fire zone inert gas injection conditions, migration the situation of inert gas jet and possibly gas explosion in conclusion, and think of such mines to take long distance in the early stage of fire should be sealed fire. Then the closed fire zone gas detection equipment and explosive analysis technology is analyzed and researched, conceived a gas explosion risk trend graph and the calculation of the Quartet, and the judgment principle is expounded, put forward four graphs detailed steps and examples of its accuracy is verified. Finally, through the observation of success and high oxygen Practical application area, put forward the oxygen observation technology unsealed fire method, closed fire zone combustion status judgment and concentration change during oxygen gas generated according to fire trend.

【学位授予单位】：中国矿业大学（北京）
【学位级别】：博士
【学位授予年份】：2013
【分类号】：TD752

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