煤矿用电缆燃烧时所释放出的烟雾和毒性气体是造成电缆火灾事故“二次灾害”的直接原因。
The direct reason that causes the cable fire disaster-the second disaster is that the smoke and poison gas produced by the cable for mine purposes when burning.
然后提出了泥石流地区大段落定线方案风险分析的模拟方法和铁路泥石流二次灾害发生风险模拟的方法；
Then, two methods of risk assessment for the alignments in railway design and the disaster of overturning trains caused by debris flow are presented.
液化石油气储罐在火灾作用下，其内部的温度和压力迅速上升，从而会引起储罐爆炸，进而酿成危害性更大的二次灾害。
When LPG tanks are exposed to external fire, their temperature and pressure will increase rapidly, which may cause the tanks exploding and lead the secondary hazard with much more damage.
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