Accident tree analysis is applied to risk analysis and a mathematical model is established, including fire model, effective release rate model, heat intensity threshold and hazard area equation.
采用事件树分析法进行风险分析并建立了数学模型，包括火灾模型、有效释放率模型、热强度极限值、危险区域等式四部分。
How to decide the threshold value of hazard zonation is the keys, which can be, divide the precision of landslide hazard zonation research.
危险度等级的阈值确定是确定滑坡危险度区划工作精度的关键。
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