Seepage characteristics is an important content to reflect the operation behavior of hydraulic engineering.After three years of storage and operation,the seepage characteristics of a high arch dam show some abnormal phenomena.Based on seepage pressure monitoring data of the project,and through the statis-tical model modeling analysis combined with the environmental data,the influence of water pressure,rainfall,temperature and aging on the uplift pressure of the dam foundation is quantitatively analyzed and evaluated.Taking 2019 as a typical year,the amplitude proportion of each component of the effect quantity is calculat-ed,and it is concluded that due to the influence of rainfall,water permeates to dam foundation through mi-cro-fissure,resulting in abnormal uplift pressure.The analysis idea in this paper can provide reference for the analysis of monitoring data of similar projects.
关键词
高拱坝/安全监测/渗流渗压/坝基扬压力/统计模型
Key words
high arch dam/safety monitoring/seepage pressure/dam foundation uplift pressure/statistical model
维普
万方数据