渗流监测数据缺失处理与渗透稳定判断
|
摘要
由于地下岩体条件复杂,渗流监测数据缺失现象普遍存在。为了在时间和空间上对地下渗流场进行全面分析,需要对缺失数据进行补充。提出了三类缺失数据的插补方法,对时间序列、空间断面以及区域整体的缺失数据分别用监测统计模型、物理因子修正和反演进行了有效的补充,反映了缺失数据的规律和时间、空间因素对监测数据的影响,最终可得完整、全面的渗流场,并通过反演渗流场对渗透稳定进行判断,为工程评价提供了依据。将该方法用于天荒坪电站缺失数据的插补,结果有效地插补了缺失数据,最终的反演渗流场能够判断渗透破坏可能发生的部位,对工程加固措施具有指导意义。
The underground rock mass condition is very complex. Therefore, the deficiency of seepage monitoring data exists. To comprehensively analyze the underground seepage field in time and space, it is necessary to replenish the missing data. Three types of supplement methods of missing data are proposed: missing data in time sequence can be replenished by creating monitoring statistic model; missing data on spatial sections can be supplemented by regression analysis modified by physical factors; missing data in the whole area can be replenished by back analysis calculation. All these can reflect the regulation of missing data and the influence of chronological and spatial factors on measuring data. Integrated and comprehensive seepage field is obtained, by which seepage stability can be determined, providing reference to project evaluation. These methods are used in Tianhuangping power station. The results show that the complementary piezometric heads and flow rates are in good agreement with the measured data, the back-analyzed seepage field conforms to the engineering practice, and the locations where seepage failure may happen are effectively determined by the back-calculated field. Engineering suggestions are proposed based on the seepage stability, which has instructive meaning to project reinforcement.
The underground rock mass condition is very complex. Therefore, the deficiency of seepage monitoring data exists. To comprehensively analyze the underground seepage field in time and space, it is necessary to replenish the missing data. Three types of supplement methods of missing data are proposed: missing data in time sequence can be replenished by creating monitoring statistic model; missing data on spatial sections can be supplemented by regression analysis modified by physical factors; missing data in the whole area can be replenished by back analysis calculation. All these can reflect the regulation of missing data and the influence of chronological and spatial factors on measuring data. Integrated and comprehensive seepage field is obtained, by which seepage stability can be determined, providing reference to project evaluation. These methods are used in Tianhuangping power station. The results show that the complementary piezometric heads and flow rates are in good agreement with the measured data, the back-analyzed seepage field conforms to the engineering practice, and the locations where seepage failure may happen are effectively determined by the back-calculated field. Engineering suggestions are proposed based on the seepage stability, which has instructive meaning to project reinforcement.
引文
[1]庞新生.缺失数据处理方法的比较[J].统计与决策,2010(24):152-155.PANG Xin-sheng.The comparative study on imputation methods of treating missing data[J].Statistics and Decision,2012(24):152-155.
[2]罗永峰,叶智武,郭小农.钢结构施工过程监测数据缺失机理与处理方法[J].同济大学学报(自然科学版),2014,42(6):823-829,923.LUO Yong-feng,YE Zhi-wu,GUO Xiao-nong.Data missing mechanism in construction monitoring and its treatment[J].Journal of Tongji University(Natural Science),2014,42(6):823-829,923.
[3]何金平.大坝安全监测理论与应用[M].北京:中国水利水电出版社,2010.HE Jin-ping.Applications and methods to safe monitoring of dams[M].Beijing:China Water&Power Press,2010.
[4]邰淑彩,孙韫玉,何娟娟.应用数理统计[M].武汉:武汉大学出版社,2007.TAI Shu-cai,SUN Yun-yu,HE Juan-juan.Applied mathematical statistics[M].Wuhan:Wuhan University Press,2007.
[5]邓高阳.地下洞室三维渗流场溢出边界模拟与渗流反演分析[D].武汉:武汉大学,2017.DENG Gao-yang.Numerical simulation of overflow boundary of 3D underground cavern seepage and seepage inversion analysis[D].Wuhan:Wuhan University,2017.
[6]景来红,段世超,杨顺群.渗流反演分析在工程设计中的应用[J].岩石力学与工程学报,2007,26(增刊2):4503-4509.JING Lai-hong,DUAN Shi-chao,YANG shun-qun.Application of seepage back analysis to engineering desigh[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(Suppl.2):4503-4509.
[7]刘武,陈益峰,胡冉,等.基于非稳定渗流过程的岩体渗透特性反演分析[J].岩石力学与工程学报,2015,34(2):362-373.LIU Wu,CHEN Yi-feng,HU Ran,et al.Back analysis of rock permeability with consideration of transient flow process[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(2):362-373.
[8]倪少虎.地下工程并行优化反演分析方法研究[D].武汉:武汉大学,2010.NI Shao-hu.Study on back analysis method in underground engineering based on parallel computing and optimization algorithm[D].Wuhan:Wuhan University,2010.
[9]李广信,周晓杰.土的渗透破坏及其工程问题[J].工程勘察,2004(5):10-13,52.LI Guang-xin,ZHOU Xiao-jie.Seepage failure of soil and its engineering problems[J].Geotechnical Investigation and Surveying,2004(5):10-13,52.
[10]何建新,张敬东,刘亮.无黏性粗粒土大型水平渗透试验研究[J].新疆农业大学学报,2010,33(5):453-456.HE Jian-xin,ZHANG Jing-dong,LIU Liang.Research on the experiment of large horizontal permeability of cohesionless coarse-grained soil[J].Journal of Xinjiang Agricultural University,2010,33(5):453-456.
[11]刘燕锋.岩体水力劈裂基本理论与方法初步研究[D].南京:河海大学,2006.LIU Yan-feng.The preliminary study on elementary theory and methods of rock hydraulic fracturing[D].Nangjing:Hohai University,2006.
[12]邓高阳,肖明,陈俊涛.基于变分不等式的地下洞室渗流边界模拟[J].岩土力学,2017,38(3):101-108.DENG Gao-yang,XIAO Ming,CHEN Jun-tao.Simulation of seepage boundary of underground cavern based on vairational inequality[J].Rock and Soil Mechanics,2017,38(3):101-108.
[2]罗永峰,叶智武,郭小农.钢结构施工过程监测数据缺失机理与处理方法[J].同济大学学报(自然科学版),2014,42(6):823-829,923.LUO Yong-feng,YE Zhi-wu,GUO Xiao-nong.Data missing mechanism in construction monitoring and its treatment[J].Journal of Tongji University(Natural Science),2014,42(6):823-829,923.
[3]何金平.大坝安全监测理论与应用[M].北京:中国水利水电出版社,2010.HE Jin-ping.Applications and methods to safe monitoring of dams[M].Beijing:China Water&Power Press,2010.
[4]邰淑彩,孙韫玉,何娟娟.应用数理统计[M].武汉:武汉大学出版社,2007.TAI Shu-cai,SUN Yun-yu,HE Juan-juan.Applied mathematical statistics[M].Wuhan:Wuhan University Press,2007.
[5]邓高阳.地下洞室三维渗流场溢出边界模拟与渗流反演分析[D].武汉:武汉大学,2017.DENG Gao-yang.Numerical simulation of overflow boundary of 3D underground cavern seepage and seepage inversion analysis[D].Wuhan:Wuhan University,2017.
[6]景来红,段世超,杨顺群.渗流反演分析在工程设计中的应用[J].岩石力学与工程学报,2007,26(增刊2):4503-4509.JING Lai-hong,DUAN Shi-chao,YANG shun-qun.Application of seepage back analysis to engineering desigh[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(Suppl.2):4503-4509.
[7]刘武,陈益峰,胡冉,等.基于非稳定渗流过程的岩体渗透特性反演分析[J].岩石力学与工程学报,2015,34(2):362-373.LIU Wu,CHEN Yi-feng,HU Ran,et al.Back analysis of rock permeability with consideration of transient flow process[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(2):362-373.
[8]倪少虎.地下工程并行优化反演分析方法研究[D].武汉:武汉大学,2010.NI Shao-hu.Study on back analysis method in underground engineering based on parallel computing and optimization algorithm[D].Wuhan:Wuhan University,2010.
[9]李广信,周晓杰.土的渗透破坏及其工程问题[J].工程勘察,2004(5):10-13,52.LI Guang-xin,ZHOU Xiao-jie.Seepage failure of soil and its engineering problems[J].Geotechnical Investigation and Surveying,2004(5):10-13,52.
[10]何建新,张敬东,刘亮.无黏性粗粒土大型水平渗透试验研究[J].新疆农业大学学报,2010,33(5):453-456.HE Jian-xin,ZHANG Jing-dong,LIU Liang.Research on the experiment of large horizontal permeability of cohesionless coarse-grained soil[J].Journal of Xinjiang Agricultural University,2010,33(5):453-456.
[11]刘燕锋.岩体水力劈裂基本理论与方法初步研究[D].南京:河海大学,2006.LIU Yan-feng.The preliminary study on elementary theory and methods of rock hydraulic fracturing[D].Nangjing:Hohai University,2006.
[12]邓高阳,肖明,陈俊涛.基于变分不等式的地下洞室渗流边界模拟[J].岩土力学,2017,38(3):101-108.DENG Gao-yang,XIAO Ming,CHEN Jun-tao.Simulation of seepage boundary of underground cavern based on vairational inequality[J].Rock and Soil Mechanics,2017,38(3):101-108.