The relations between the maximum explosion pressure, the maximum quantity of draw-off heat and coal dust concentration, methane concentration were calculated.
分别推导出粉尘爆炸放热量和最大爆炸压力与煤尘浓度、甲烷浓度等影响因素的关系。
Experimental study was conducted on the propagation regularity of flame in the process of gas and coal-dust combustion and explosion in the existence of obstacle objects.
对障碍物在瓦斯煤尘燃烧爆炸过程中的火焰传播规律进行了实验研究，结果表明：障碍物对火焰的传播速度具有重要的影响。
According to national statistics, coal mines with coal dust explosion risks account for 60% of all coal mines, among which coal mines with explosion index over 45% accounting for 16.3%.
据统计全国煤矿中，具有煤尘爆炸危险的矿井占煤矿总数的60%以上，煤尘爆炸指数在45%以上的煤矿占16.3%。
The explosion characteristics of pure coal dust and coal-methane mixtures were studied experimentally in this paper.
本文就此针对纯煤尘和煤尘-甲烷混合物的爆炸特性进行了实验研究。
Gas explosion is major disasters in coal mines, so is coal-dust explosion. Therefore, it is very important to analyze the causes of the explosion and make preventive measures.
煤尘爆炸同瓦斯爆炸一样都属于矿井中的重大灾害事故。因此，分析煤尘爆炸原因，制订防治措施，显得特别重要。
The mine electric leakage can not only cause the electric shock of the people but also some serious accidents such as the fire hazard, coal dust explosion, and gas explosion, etc.
煤矿井下漏电，不仅会引起人身触电，还会酿成火灾、煤尘及瓦斯爆炸等恶性事故。
The explosion characteristics of coal dust-methane mixture were studied.
实验研究了煤尘-甲烷混合物的爆炸特性。
A mathematical model of relation between dust explosion rate on a coal face and design parameters of a shearer drum is set up by supposing and simplification in the paper.
通过假设与简化，建立了采煤工作面粉尘爆炸率与采煤机滚筒设计参数间关系的数学模型。
On the basis of gas explosion tests (without taking part in of coal dust) in different gas content circumstances and regression analysis a series of safety distances have been obtained .
并通过瓦斯爆炸试验和回归分析，得出了井下一定量的沼气在无煤尘参与的条件下发生爆炸时的安全距离。
The explosion characteristics of pure coal dust were studied.
实验研究了纯煤尘的爆炸特性。
Due to shell has good dust seal to guarantee whole body anti explosion and to strengthen safety of coal feeder.
由于壳体的防尘密封，确保了整体防爆性，增强了给料机的安全性。
Objective: To find a method for promoting healing of facial burn wounds caused by coal dust explosion.
目的：寻求促进面部煤尘燃爆伤创面愈合的治疗方法。
At the same time, the high temperature of blasting gas can causing gas and coal dust explosion.
同时爆生气体温度较高，容易引起瓦斯和煤尘爆炸。
At the same time, the high temperature of blasting gas can causing gas and coal dust explosion.
同时爆生气体温度较高，容易引起瓦斯和煤尘爆炸。
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