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Statistical model with new high water level factor on vertical displacement of gravity dam

HU Ming-xiu, DENG Yong, WANG Dong and et al.   

  • Online:2012-02-28 Published:2012-02-28

包含新高水位因子的重力坝垂直位移统计模型

胡明秀1,邓勇1,王东1,3,沈定斌4,熊敏4,于真真1   

  1. 1.四川大学水利水电学院,四川成都 610065;2.重庆市电力公司,重庆 400014;3.水力学与山区河流开发保护国家重点实验室,四川成都 610065;4.国电大渡河公司库坝管理中心,四川乐山 614900

Abstract: In order to analyze the disciplines of dam’s vertical displacement changes accurately and its influencing factors, basing on analysis of defects of conventional statistic model, add the “new high water level factor” to the statistic model to analyze vertical displacement of Tongjiezi gravity dam. The results showed that the statistical model contained the “new high water level factor” could simulate the influence of sharp increase of water level at the beginning of impoundment on the vertical displacement. As well, the reasonable aging development process could be separated. This new model improved the reliability of dam safety evaluation.

摘要: 为了更准确地分析大坝垂直位移的变化规律,解析其影响因素,在分析了常规统计模型缺陷的基础上,加入“新高水位因子”,用于铜街子重力坝垂直位移的对比分析。结果表明,增加新高水位因子的统计模型能够很好地模拟初蓄期水位急升对垂直位移的影响,并能分解出合理的时效发展过程,采用该模型可提高坝工安全评价结论的可靠性。