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首页> 外文会议>The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)论文集 >Effect of Particle Size of Coal Dusts on Explosion Pressure and Rise Rate of Explosion Pressure
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Effect of Particle Size of Coal Dusts on Explosion Pressure and Rise Rate of Explosion Pressure

机译：煤尘粒径对爆炸压力和爆炸压力上升率的影响

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摘要

The effect of particle size of coal dusts on explosion pressure and rise rates of explosion pressure is studied. Three coal dusts are selected to test data. They come from Lingan coal mine of Canada and Datong coal mine of China. By experiment, the influence of particle size on the maximum explosion pressure Pmax and maximum pressure rising rates (dp/dt)max of each coal was tested. Result indicated that along with the decrease of particle size of coal dusts, explosion pressure increase at the same concentration. For different concentration of each coal dust, the maximum explosion pressure appear at the concentration of 500 g/m3. The smaller the particle size of coal. dusts is, the more excessive of rise rate of explosion pressure of coal dusts. When concentration of cold dusts is 500 g/m3, rise rate of explosion pressure of each coal dust is maximal.
机译：研究了粉尘粒径对爆炸压力和爆炸压力上升率的影响。选择了三种煤粉来测试数据。他们来自加拿大的临安煤矿和中国的大同煤矿。通过实验，测试了粒径对每种煤的最大爆炸压力Pmax和最大压力上升率（dp / dt）max的影响。结果表明，随着粉尘粒径的减小，在相同浓度下爆炸压力增大。对于每种浓度的煤粉，最大爆炸压力出现在500 g / m3的浓度下。煤的粒径越小。粉尘是，煤粉爆炸压力上升率过大。当冷粉尘浓度为500 g / m3时，每种煤粉尘的爆炸压力上升速率最大。

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