摘要
根据土体流变机理,考虑时间效应,对以往的渗流监控模型进行了改进。在此基础上,建立了基于多层递阶回归方法的土石坝渗流时变监控模型,并就某工程实例验证了该模型的有效性。计算结果表明,该模型具有较高的拟合精度,且其预报能力较非时变模型强。
According to the rheology mechanism of earth, considering time effect, the previous seepage-monitoring model is improved. Additionally, a recursive regression-based time-varying seepage-monitoring model is established for earth-rockfill dams. As an example, the application of the present model to an earth-rockfill dam shows that the model is of higher fitting accuracy and better prediction ability than other models.
出处
《水电自动化与大坝监测》
2007年第5期62-65,共4页
HYDROPOWER AUTOMATION AND DAM MONITORING
基金
国家重点基础研究发展计划(973计划)资助项目(2002CB412707)
国家自然科学基金重点项目(50539010
50539110)
国家自然科学基金资助项目(50579010)
国家科技支撑计划项目(2006BAC14B03)
水利部"948"项目(CT200612)
关键词
土石坝
渗流
监控模型
多层递阶回归
earth-rockfill dam
seepage
monitoring model
recursive regression analysis
