土石坝GNSS监测水平位移与库水压荷载建模分析
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摘要
为揭示水库水位变化与土石坝表面位移的关系并建立相应的模型,该文收集了茜坑水库主坝体上下游多个监测点近半年的GNSS监测数据,通过解算短基线获取了各测站毫米级精度水平位移序列。结合坝体结构和水库水位监测结果,分析了库水位变化产生的面板水压荷载变化与监测站水平位移变化序列之间的关系。基于两者正相关特征,推导了水压载荷与监测点水平位移变化间简化的线性模型,并利用实测数据和最小二乘方法估计了模型参数。拟合结果表明,该模型较好地反映了水库调水期间,监测点水平位移的趋势和规律。
To reveal the relationship between water level variation and earth rockfill dam surficial displacement,and construct a relevant model,five months of GNSS data from monitoring stations in the key dam of Xikeng reservoir was collected in this paper,with which horizontal displacement series in millimeter level precision were achieved.Combining with dam structure and water level data,correlation between horizontal displacement and water level data was analyzed.Considering this highly positive correlation,a simplified linear model between water pressure load and horizontal displacement was inferred,and the model parameters were estimated with GNSS and water level data by least square method.Fitting results showed that the horizontal displacement of these monitoring stations could be well reflected with the model and water level data.
To reveal the relationship between water level variation and earth rockfill dam surficial displacement,and construct a relevant model,five months of GNSS data from monitoring stations in the key dam of Xikeng reservoir was collected in this paper,with which horizontal displacement series in millimeter level precision were achieved.Combining with dam structure and water level data,correlation between horizontal displacement and water level data was analyzed.Considering this highly positive correlation,a simplified linear model between water pressure load and horizontal displacement was inferred,and the model parameters were estimated with GNSS and water level data by least square method.Fitting results showed that the horizontal displacement of these monitoring stations could be well reflected with the model and water level data.
引文
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[2]李啸啸,程黎明,蒋敏,等.土石坝外观变形统计模型时效因子函数探讨[C/OL]∥中国水力发电工程学会大坝安全监测专委会年会暨学术交流会论文集.2012:116-125[2017-06-11].http:∥xueshu.baidu.com/s?wd=paperuri%3A%288c11e1d7a45cd266db353502f1e77a76%29&filter=sc_long_sign&tn=SE_xueshusource_2kduw22v&sc_vurl=http%3A%2F%2Fwww.docin.com%2Fp-1274753298.html&ie=utf-8&sc_us=8881711208802773674.(LI Xiaoxiao,CHENG Liming,JIANG Min,et al.Discussion on time factor function of statistical model for earth rockfill dam surface deformation[C]∥Proceeding of the annual academic meeting of the dam safety monitoring committee of China Society for Hydropower Engineering,2012:116-125[2017-06-11].http:∥xueshu.baidu.com/s?wd=paperuri%3A%288c11e1d7a45cd266db353502f1e77a76%29&filter=sc_long_sign&tn=SE_xueshusource_2kduw22v&sc_vurl=http%3A%2F%2Fwww.docin.com%2Fp-1274753298.html&ie=utf-8&sc_us=8881711208802773674.)
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[7] ZHOU W,HUA J J,CHANG X L,et al.Settlement analysis of the Shuibuya concrete-face rockfill dam[J].Computers&Geotechnics,2011,38(2):269-280.
[8]郭靖,赵红华,李守巨,等.上游水位变化对堆石坝变形特性影响分析[J].水利学报,2015,46(S1):291-295.(GUO Jing,ZHAO Honghua,LI Shouju,et al.Influences of change of water level on upstream of rockfill dam on dam deformation characteristics[J].Journal of Hydraulic Engineering,2015,46(S1):291-295.)
[9]周国庆,周建郑.小浪底水库水位变化与土石坝变形分析[J].人民黄河,2010,32(10):113-114.(ZHOU Guoqing,ZHOU Jianzheng.Analysis on water level variation of the Xiaolangdi reservoir and deformation of rock and earth fill dam[J].Yellow River,2010,32(10):113-114.)
[10]DARDANELLI G,CAPODICI L L,NICOLA P.Monitoring displacements of an earthen dam using GNSS and remote sensing[J].Proceedings of the SPIE,2014,9239:923928-1-923928-16.
[11]赵博超,殷旗,邓刚,等.库水位升降对堆石坝心墙的水平变形影响分析[J].长江科学院院报,2016,33(4):86-90.(ZHAO Bochao,YIN Qi,DENG Gang,et al.Influence of water level fluctuation on the horizontal displacement of core wall of rockfill dam[J].Journal of Yangtze River Scientific Research Institute,2016,33(4):86-90.)
[12]宋冰,马晓东,张书毕.BDS卫星轨道周期重复性分析[J].全球定位系统,2016,41(5):47-50.(SONG Bing,MA Xiaodong,ZHANG Shubi,Analysis of BDS satellite orbit periodicity[J].Global Positioning System,2016,41(5):47-50.)
[13]YE S R,CHEN D Z,LIU Y Y,et al.Carrier phase multipath mitigation for BeiDou navigation satellite system[J].GPS Solutions,2015,19(4):545-557.
[14]袁兵,熊寻安,龚春龙,等.顾及多路径误差改正的GNSS大坝形变监测研究[J].导航定位与授时,2016,3(1):53-59.(YUAN Bing,XIONG Xun’an,GONG Chunlong,et al.Study on the GNSS deformation monitoring of dam considering the multipath error correction[J].Navigation Positioning&Timing,2016,3(1):53-59.)
[15]张伟,李陶,龚春龙,等.土石坝外观GNSS高精度变形监测技术研究[C]∥中国卫星导航学术年会.[出版地不详]:[出版者不详],2016.(ZHANG Wei,LI Tao,GONG Chunlong,et al.Real-time deformation monitoring by GNSS technology on earth and rock filled dam[C]∥China Satellite Navigation Conference.[S.l.]:[s.n.],2016.)
[2]李啸啸,程黎明,蒋敏,等.土石坝外观变形统计模型时效因子函数探讨[C/OL]∥中国水力发电工程学会大坝安全监测专委会年会暨学术交流会论文集.2012:116-125[2017-06-11].http:∥xueshu.baidu.com/s?wd=paperuri%3A%288c11e1d7a45cd266db353502f1e77a76%29&filter=sc_long_sign&tn=SE_xueshusource_2kduw22v&sc_vurl=http%3A%2F%2Fwww.docin.com%2Fp-1274753298.html&ie=utf-8&sc_us=8881711208802773674.(LI Xiaoxiao,CHENG Liming,JIANG Min,et al.Discussion on time factor function of statistical model for earth rockfill dam surface deformation[C]∥Proceeding of the annual academic meeting of the dam safety monitoring committee of China Society for Hydropower Engineering,2012:116-125[2017-06-11].http:∥xueshu.baidu.com/s?wd=paperuri%3A%288c11e1d7a45cd266db353502f1e77a76%29&filter=sc_long_sign&tn=SE_xueshusource_2kduw22v&sc_vurl=http%3A%2F%2Fwww.docin.com%2Fp-1274753298.html&ie=utf-8&sc_us=8881711208802773674.)
[3]潘洁晨.基于Matlab的土石坝变形分析BP神经网络模型的建立:以哈尔滨西泉眼水库大坝为例[J].水资源与水工程学报,2012,23(3):166-169.(PAN Jiechen.Establishment of BP neural network model based on Matlab to deformation of earth rockfill dam:case study of Xiquanyan reservoir dam in Harbin[J].Journal of Water Resources and Water Engineering,2012,23(3):166-169.)
[4] DAI Wujiao,LIU Bin,DING Xiaoli,et al.Modeling dam deformation using independent component regression method[J].Transactions of Nonferrous Metals Society of China,2013,23(7):2194-2200.
[5]徐伟,何金平.基于多尺度小波分析的大坝变形自回归预测模型[J].武汉大学学报工学版,2012,45(3):285-289.(XU Wei,HE Jinping.Forecast model of dam deformation based on multi-scale wavelet analysis and autoregressive method[J].Engineering Journal of Wuhan University,2012,45(3):285-289.)
[6] SUN D W,ZHANG G D,WANG K P,et al.3Dfinite element analysis on a 270 m rockfill dam based on Duncan-Chang E-B model[J].Advanced Materials Research,2011,287-290:1213-1216.
[7] ZHOU W,HUA J J,CHANG X L,et al.Settlement analysis of the Shuibuya concrete-face rockfill dam[J].Computers&Geotechnics,2011,38(2):269-280.
[8]郭靖,赵红华,李守巨,等.上游水位变化对堆石坝变形特性影响分析[J].水利学报,2015,46(S1):291-295.(GUO Jing,ZHAO Honghua,LI Shouju,et al.Influences of change of water level on upstream of rockfill dam on dam deformation characteristics[J].Journal of Hydraulic Engineering,2015,46(S1):291-295.)
[9]周国庆,周建郑.小浪底水库水位变化与土石坝变形分析[J].人民黄河,2010,32(10):113-114.(ZHOU Guoqing,ZHOU Jianzheng.Analysis on water level variation of the Xiaolangdi reservoir and deformation of rock and earth fill dam[J].Yellow River,2010,32(10):113-114.)
[10]DARDANELLI G,CAPODICI L L,NICOLA P.Monitoring displacements of an earthen dam using GNSS and remote sensing[J].Proceedings of the SPIE,2014,9239:923928-1-923928-16.
[11]赵博超,殷旗,邓刚,等.库水位升降对堆石坝心墙的水平变形影响分析[J].长江科学院院报,2016,33(4):86-90.(ZHAO Bochao,YIN Qi,DENG Gang,et al.Influence of water level fluctuation on the horizontal displacement of core wall of rockfill dam[J].Journal of Yangtze River Scientific Research Institute,2016,33(4):86-90.)
[12]宋冰,马晓东,张书毕.BDS卫星轨道周期重复性分析[J].全球定位系统,2016,41(5):47-50.(SONG Bing,MA Xiaodong,ZHANG Shubi,Analysis of BDS satellite orbit periodicity[J].Global Positioning System,2016,41(5):47-50.)
[13]YE S R,CHEN D Z,LIU Y Y,et al.Carrier phase multipath mitigation for BeiDou navigation satellite system[J].GPS Solutions,2015,19(4):545-557.
[14]袁兵,熊寻安,龚春龙,等.顾及多路径误差改正的GNSS大坝形变监测研究[J].导航定位与授时,2016,3(1):53-59.(YUAN Bing,XIONG Xun’an,GONG Chunlong,et al.Study on the GNSS deformation monitoring of dam considering the multipath error correction[J].Navigation Positioning&Timing,2016,3(1):53-59.)
[15]张伟,李陶,龚春龙,等.土石坝外观GNSS高精度变形监测技术研究[C]∥中国卫星导航学术年会.[出版地不详]:[出版者不详],2016.(ZHANG Wei,LI Tao,GONG Chunlong,et al.Real-time deformation monitoring by GNSS technology on earth and rock filled dam[C]∥China Satellite Navigation Conference.[S.l.]:[s.n.],2016.)
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