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大坝监测数据缺失插补与奇异值修正处理

岳明昊 刘仲鹏 欧斌 朱文申

岳明昊,刘仲鹏,欧斌,等.大坝监测数据缺失插补与奇异值修正处理[J].农业工程,2022,12(7):47-51. doi: 10.19998/j.cnki.2095-1795.2022.07.009
引用本文: 岳明昊,刘仲鹏,欧斌,等.大坝监测数据缺失插补与奇异值修正处理[J].农业工程,2022,12(7):47-51. doi: 10.19998/j.cnki.2095-1795.2022.07.009
YUE Minghao,LIU Zhongpeng,OU Bin,et al.Missing interpolation and singular value correction of dam monitoring data[J].Agricultural Engineering,2022,12(7):47-51. doi: 10.19998/j.cnki.2095-1795.2022.07.009
Citation: YUE Minghao,LIU Zhongpeng,OU Bin,et al.Missing interpolation and singular value correction of dam monitoring data[J].Agricultural Engineering,2022,12(7):47-51. doi: 10.19998/j.cnki.2095-1795.2022.07.009

大坝监测数据缺失插补与奇异值修正处理

doi: 10.19998/j.cnki.2095-1795.2022.07.009
基金项目: 国家自然科学基金项目(52069029)
详细信息
    作者简介:

    岳明昊,硕士生,主要从事水利工程安全监测与评价研究 E-mail: 342896898@qq.com

    欧斌,通信作者,博士,讲师,主要从事水利工程安全监测与评价研究 E-mail:oubin418@126.com

  • 中图分类号: TV736

Missing Interpolation and Singular Value Correction of Dam Monitoring Data

  • 摘要:

    大坝长效运行过程中,由于仪器故障或设备改造等问题,会引发监测数据失真或缺失等问题,容易造成结构安全性态误判。采用时空相关性原理对缺失的监测数据进行插补,利用格拉布斯−小波去噪组合方法对奇异值进行识别与处理,求得坝体的重构监测数据,并对奇异值进行修正。实例验证证明,该方法可以有效插补缺失变形监测数据,并对奇异值进行修正,从而使得监测数据结果愈加科学合理。

     

  • 图 1  基于格拉布斯准则-小波去噪的奇异值识别与处理

    Figure 1.  Singular value recognition and processing based onGrubbs criterion and wavelet denoising

    图 2  拱坝垂线监测仪器布置

    Figure 2.  Vertical monitoring instrument layout of arch dam

    图 3  测点实测变形

    Figure 3.  Deformation measured at measuring point

    图 4  A22-PL-03变形测量值插补结果

    Figure 4.  A22-PL-03 deformation measurement interpolation results

    图 5  A22-PL-05实测变形及加噪变形

    Figure 5.  A22-PL-03 measured deformation andnoise-adding deformation

    图 6  基于小波去噪的数据重构结果

    Figure 6.  Data reconstruction results based on wavelet denoising

    表  1  重构数据与原始数据对比

    Table  1.   Comparison of reconstructed data with original data 单位:mm

    日期原始测量值加噪测量值修正测量值
    2012/12/1324.1325.2524.11
    2012/12/1624.0221.2824.01
    2012/12/2123.8623.0023.84
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-03-15
  • 修回日期:  2022-04-19
  • 出版日期:  2022-07-20

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