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鉴于引水隧洞是水电站的关键工程,其安全性备受关注,基于功效系数法原理,建立了隧洞塌方风险评价模型。该模型涵盖了引起隧洞塌方风险的主要影响因子,然后将各指标划分为极大型变量、极小型变量、稳定型变量和区间型变量,并计算了各指标的单项功效系数值,基于博弈论原理确定指标的权重系数,从而计算得到隧洞塌方风险的总功效系数值。以某水电站的引水隧洞为例进行建模分析,验证了该方法是可行的。
As the diversion tunnel is a key project of hydropower station, its safety has drawn much attention. Based on the principle of efficiency coefficient method, a risk assessment model of tunnel collapse is established. The model covers the main factors that cause the risk of landslide in the tunnel. Then the indicators are divided into the maximum variable, the minimum variable, the stable variable and the interval variable, and the single effect coefficient of each index is calculated. Based on the game theory Determine the weight coefficient of the index, and calculate the total efficiency coefficient of tunnel collapse risk. Taking the diversion tunnel of a hydropower station as an example, the model is validated by the method.