According to the special structure of the differential velocity bed, a simulation calculation of the coal combustion and the physical and chemical process was carried out by the cell model.

针对差速循环流化床的结构及特有形式，采用小室模型的方法，对炉内煤的燃烧及其物理、化学反应过程进行了相应的仿真计算。

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Coal bed joints are a widespread structure in coal beds. They are important objective in study of shaft structure and also a very important engineering geological factor.

煤层节理在煤层中普遍发育，它不仅是矿井构造研究的重要内容，同时也是极其重要的工程地质因素。

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Coal (rock) and gas outburst is one of intense natural disaster, is also a complicated and dynamical phenomenon, caused by stress, gas pressure of coal bed as well as coal structure.

煤(岩)与瓦斯突出是煤矿严重的自然灾害之一，且是一种复杂的动力现象，是地应力、煤层中的瓦斯压力和煤的结构力学性质综合作用的结果。

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