The isolated island working face is surrounded with the goaf and its Surrounding coal column and goaf have a tendency of spontaneous combustion.

孤岛综放工作面四周均与采空区相连，其四周煤柱和工作面采空区易于出现自燃发火。

Combined with coal characteristics in goaf of fully mechanized top-coal caving, determinant criteria and methods of hazard zone in goaf are determined by theory of coal spontaneous combustion zone.

本论文结合综放面采空区浮煤自然发火的特点，运用煤自燃危险区域判定理论，确定了采空区自燃危险区域的判定条件和方法步骤。

It proves that using the traditional BP network can distinguish the rand of spontaneous combustion fatalness through the validated result.

通过验证结果发现：采用传统的BP网络即可满足煤层自燃等级的划分。

The effect to prevent the spontaneous combustion in Y-type ventilation goaf is obvious at the air in side.

在进风侧向采空区注氮，对于防止Y形通风采空区自燃效果明显。

Detection of Spontaneous Combustion Indication Gas of Coal.

煤的自燃指标气体检测。

News reports said only this mobile phone is" spontaneous combustion", but no further details revealed.

新闻报道中只是说这部手机是“自燃”，但是没有进一步透露详情。

And studied the index gases created during coal spontaneous combustion, and gained the relation between the consistency of index gases and the temperature.

研究了煤氧化自燃条件下产生的指标性气体，给出了生成指标性气体的浓度与温度的关系；

Coal spontaneous combustion seriously threats the safety of coal industry.

煤自燃火灾严重威胁着煤炭工业的安全。

This theory can be used to explain the phenomenon of “human spontaneous combustion”.

这个理论可以解释上面所归纳的“人体自燃”现象。

Finally, according to the experiments of Yanzhou coal sample, the results of the numerical simulation on the column coal spontaneous combustion are consistent with the experiments.

最后，以兖州东滩矿煤样自然发火实验为基础，对圆柱形煤样自燃过程进行数值模拟，其结果与实验基本一致。

However the study of the spontaneous combustion of coal seam causing surface subsidence deformation is very little, so the paper tries to study the problem.

然而煤层自燃引起的地表移动变形研究在国内外涉及很少，为此本论文对该问题进行了一定的探索和尝试。

But as the car fuel to the fire, the main reason is the car spontaneous combustion.

而燃油作为汽车上最容易起火的物质，是汽车自燃的主要原因。

There are more than 56% of mines in our country exist seams spontaneous combustion danger, seams spontaneous combustion fire serious influences coal safety production.

我国有56％以上的矿井存在煤层自然发火危险，煤炭自燃火灾严重影响煤炭的安全生产。

Based on this theory, the boundary of coal layer spontaneous combustion area in a coalfield in northwest China is determined by high-precision magnetic measurement.

煤层自燃后产生“热剩磁”，基于这一理论，运用地面高精度磁测在灵武某煤田对煤田自燃区的边界范围进行圈定。

The main reason of coal spontaneous combustion is interaction between surface activity structure of coal and oxygen.

煤自燃主要是由于煤表面活性结构与氧之间相互作用的结果。

The reason of the spontaneous combustion at fully mechanized workface with top caving are analyzed. The comprehensive preventing measures are elaborated. The good effect is obtained.

对综采放顶煤工作面自燃发火的原因进行了分析，阐述了所采取的综合性预防措施，及取得了良好的效果。

The paper summed up and provided the comprehensive fire-prevention measures for preventing spontaneous combustion, which can be carried out effectively and guarantee coal production run smoothly.

本文总结并提出采用综合防灭火措施，落实到位，严格管理，一定能有效地预防自燃发火，保证掘采工作的顺利进行。

To enhance the efficiency of mine fire control, the technology of three-phase foam for preventing spontaneous combustion of coal in goaf was developed.

针对目前煤矿防灭火技术与材料存在的一些不足，研制了一种用于防治采空区煤炭自燃的三相泡沫材料。

Finally based on the analysis of heat effect during tests, the mechanism of spontaneous combustion of coal is discussed.

最后，通过煤炭低温吸氧过程的热效应分析，对煤炭自燃机理进行了探讨。

The spontaneous combustion of coal of gob is one of the major calamities, which seriously influences safety production of mine.

采空区浮煤自燃是煤矿的主要灾害之一，严重影响了煤矿的安全生产。