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中文摘要：
在综合分析影响露天爆破飞石事故因素的基础上,采用事故树分析方法得到影响顶事件的各阶最小割集,通过计算基本事件的结构重要度,确定了影响爆破飞石事故的主要因素,并提出相应的安全措施,对降低露天爆破安全事故有重要意义。
英文摘要：
On the basis of comprehensive analysis of blasting fly rock factors,the fault tree analysis methods was used to find out the minimum cut sets of influencing top events.By calculating the structure importance of essential event,the main factors of blasting fly rock fault were determined,and then the safety measures were also put forward.It has a vital significance for reducing the accident of surface blasting.
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