【摘要】 当煤矿井下发生爆炸时会产生一定体积、温度、浓度及密度的毒害烟流。由于毒害烟流与周围的环境存在着物质和能量的交换,便开始衰减,直至与周围的环境相同。作者根据能量守恒和质量守恒定律探讨了毒害烟流作为污染源其温度、浓度及密度的衰减规律,得出了它们随时间按指数规律衰减的结论。更多还原

【Abstract】 Poisonous and harmful smoke flow with a certain volume, temperature, concentration and density will be generated during explosion in a coal mine. Smoke starts to weaken till to the same as the surroundings due to the exchange of substance and energy between it and surroundings. In this paper, the authors probed into the weakening law of temperature, concentration and density of the poisonous and harmful smoke flow as a contaminated source in a coal mine according to the principles of energy conservation and mass conservation and arrived the conclusion that they weaken as exponential.更多还原