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一、前言 煤矿中,为了防止煤尘爆炸事故,必须经常仔细地清扫沉积煤尘和排除火源。但为了防止意外的煤尘爆炸传播,则应该置设岩粉棚、水棚、密集岩粉带及喷雾洒水带等所谓防隔爆设施。此时,往往是将爆炸火焰的温度作为这些设施的设置基准。例如,在判断使用水棚、水袋所产生的阻止火焰传播的效果时,为了更加有效地发挥飞散水滴从火焰中夺取热量的机能,火焰发出的总热量、火焰温度等数据如何将是计算的基础。 在以往的灾害调查记录中,就爆炸传播火焰的到达范围、受害者烧伤的程度来看,一般认为,火焰的温度是1000℃或1200℃。但由于是瞬时发生的现象,故目前尚无一种十
First, the foreword Coal mines, in order to prevent coal dust explosion accident, must carefully and regularly clean the deposition of coal dust and eliminate the source of fire. However, in order to prevent the accidental spread of coal dust explosion, the so-called anti-explosion-proof facilities such as rock powder shed, water shed, dense rock powder zone and spray sprinkler belt should be set up. At this point, the temperature of the blast flame is often used as a basis for setting these facilities. For example, in judging the effect of flame spread caused by the use of a water shed or a water bag, in order to more effectively display the function of the scattered water droplets to extract heat from the flame, how the data of the total calorific value of the flame, the flame temperature, etc. will be calculated basis. In the past disaster investigation records, the extent of flame spread reached by the explosion spread, the degree of victim burns, it is generally believed that the flame temperature is 1000 ℃ or 1200 ℃. However, because it is an instantaneous phenomenon, there is no such thing as ten