溪洛渡水电站拱坝坝基渗压统计模型研究

Study on Statistical Model of Seepage Pressure of Arch Dam Foundation of Xiluodu Hydropower Station

为了掌握溪洛渡水电站拱坝的真实运行状态,对大坝坝基渗压进行了分析,研究了影响坝基渗压各主要因素的作用规律。所采用的统计模型的温度分量选用周期函数和实测温度,分别拟定了坝基渗压安全监控指标,并将其与实测值进行对比,研究结果表明:统计模型的温度分量采用实测温度时,其预测值与实测值更接近,具有更高的预报精度。

In order to grasp the real operation status of the arch dam of Xiluodu Hydropower Station,seepage pressure of dam foundation of Xiluodu Hydropower Station is analyzed and the law of the main factors affecting seepage pressure of dam foundation is studied in this paper.The periodic function and the measured temperature are selected as the temperature components of the statistical model,the safety monitoring indexes of seepage pressure of dam foundation are proposed respectively,and compared with the measured values of seepage pressure.The study shows that when the temperature component of the statistical model adopts the measured temperature,the predicted value is closer to the measured value and has a higher prediction accuracy.