尾矿库溃坝的事故树分析

利用事故树方法对尾矿库溃坝灾害进行分析,建立适合尾矿库的事故树,并进行最小割集、最小径集的计算和基本事件结构重要度的分析,找出影响尾矿坝稳定性的关键基本事件。分析结果表明,要重点预防发生渗流破坏但未及时采取措施进行处理,以及预防汛期雨量过大对尾矿库的影响,提前作出应对措施。这为防止尾矿库溃坝灾害的发生,具有重大指导意义。

Fault tree analysis of tailings pond dam break

This paper uses the fault tree method to analyze tailings dam break, and constructs a fault tree of tailings pond. It calculates minimum cut sets and minimum path sets and analyses the structure importance, so the key elementary events can be found which affect the stability of tailings dam. The analysis result shows that the focus of preventing dam break should be put on avoiding seepage failure without timely measures and heavy rainfalls. According to the analysis above, many steps should be taken in advance, and it has important guiding significance to prevent tailings dam break.