基于改进F-N曲线的滑坡可接受风险水平研究

滑坡灾害的可接受风险水平是滑坡领域的重要研究内容之一,它常常用F-N曲线直观地表示风险频率与后果之间的关系,然而这种传统方法的参数由人为确定,主观性强,缺乏理论依据,且同一个参数不能适用多个地区和风险.以滑坡灾害的相关规范为依据,用风险矩阵的方法做衔接,绘制出3种决策态度下的滑坡灾害可接受风险的F-N曲线.相比传统的方法,改进后的F-N曲线避免了以上缺陷,使得滑坡灾害可接受风险水平的确定更加精准,同时该方法也可运用到其他领域的相关规范,来研究其可接受风险水平.

Study on the Acceptable Risk Level of Landslide Based on Improved F-N Curve

The acceptable risk level of landslide disasters is one of the important research contents in the field of landslides. It often uses F-N curves to intuitively express the relationship between risk frequency and consequences. There is no theoretical basis, and the same parameter cannot be applied to multiple regions and risks. In this paper, based on the relevant specifications of landslide disasters, the risk matrix method is used to connect, and the F-N curve of landslide life loss risk under three decision attitudes is drawn. Compared with the traditional method, the improved F-N curve avoids the above defects, which makes the determination of the acceptable risk level of landslide disasters more accurate. At the same time, the method can also be applied to relevant specifications in other fields to study its acceptable risk level.