频域反射分析法测定土壤含水率标定试验研究
|
摘要
对滑坡体土壤含水率进行长期和连续的监测,有利于对滑坡体的变形分析和安全预警。为了提高频域反射分析法(FDR法)测量土壤含水率的精度,通过室内标定和现场标定相结合的方式,对使用FDR法测定野外现场滑坡土壤含水率进行了标定。通过对比分析FDR法和烘干法测得的土壤含水率数据,探讨电压信号、含水率、绝对误差和相对误差之间的对应关系,并建立函数模型。试验结果表明:FDR法测定的土壤含水率较烘干法偏高;通过线性、多次曲线及指数形式对试验数据进行拟合和回归分析,最终确定四次曲线作为标定方式,标定后测得的土壤含水率精度明显提高,平均绝对误差可控制在2%以内。该方法可用于类似条件下FDR法测定土壤含水率的标定。
Long-term and continuous monitoring of soil moisture content in a landslide body is important for the analysis and safety warning of landslides. Based on the frequency domain reflectometry( FDR),the principle of measuring soil moisture content is described in this paper. In order to improve the accuracy of soil water content measured by the FDR method,the soil moisture content of the landslides near the Jietai Temple is calibrated by the combination of indoor and field calibration methods,respectively. By comparing and analyzing the data of soil moisture measured by the FDR method and drying method,the corresponding relationship between the voltage signal,water content,absolute error and relative error is discussed,and a function model is established. The test results show that the soil moisture content measured by the FDR method is higher than that of the drying method. Through fitting and regression analyses of the test data with linear,multiple power curves and exponential forms,the four power curve is determined as the calibration method.The accuracy of soil moisture content measured after calibration is obviously improved,and the mean absolute error can be controlled within 2%. The calibration curve can be applied to the determination of soil moisture content with the FDR method in the landslide near the Jietai Temple and other similar areas.
Long-term and continuous monitoring of soil moisture content in a landslide body is important for the analysis and safety warning of landslides. Based on the frequency domain reflectometry( FDR),the principle of measuring soil moisture content is described in this paper. In order to improve the accuracy of soil water content measured by the FDR method,the soil moisture content of the landslides near the Jietai Temple is calibrated by the combination of indoor and field calibration methods,respectively. By comparing and analyzing the data of soil moisture measured by the FDR method and drying method,the corresponding relationship between the voltage signal,water content,absolute error and relative error is discussed,and a function model is established. The test results show that the soil moisture content measured by the FDR method is higher than that of the drying method. Through fitting and regression analyses of the test data with linear,multiple power curves and exponential forms,the four power curve is determined as the calibration method.The accuracy of soil moisture content measured after calibration is obviously improved,and the mean absolute error can be controlled within 2%. The calibration curve can be applied to the determination of soil moisture content with the FDR method in the landslide near the Jietai Temple and other similar areas.
引文
[1] Kun XU,Qingyuan SHENG,Xiliang ZHANG,et al.Design and calibration of the unilateral sensitive soil moisture sensor[J]. IEEE Sensors Journal,2015,15(8):4587-4594.
[2] GASCH,BROWN,CHAHAL,et al. A field—scale sensor network data set for monitoring and modeling the spatial and temporal variation of soil water content in a dryland agricultural field[J]. Water Resources Research,2017,53(12):10878-10887.
[3] WANG Liming,ZHANG Xuefen,ZHOU Xuhui,et al. Correction method of undisturbed soil moisture measurements from FDR soil moisture sensors[J].Water Resources Research, 2016, 44(3):347-353.
[4] GUO Jia,WANG Zhen-ying,ZHENG Yu-suo,et al.Research and application of new FDR soil water and salt integrated sensor calibration[J]. Soil and fertilizer in China,2016,12(6):156-161.
[5]曹鼎峰,施斌,顾凯,等.土的含水率AHFO法测量中分段函数模型建立[J].水文地质工程地质,2016,43(6):41-47.[CAO D F,SHI B,GU K,et al. Establishment of piecewise function model for measuring soil moisture content by AHFO method[J].Hydrogeology&Engineering Geology,2016,43(6):41-47.(in Chinese)]
[6]沙琳川,王桂尧,张永杰,等.含水率与加筋率对加筋土抗剪强度的影响规律研究[J].水文地质工程地质,2018,45(2):51-58.[SHA L C,WANG G Y,ZHANG Y J,et al. The study of influence of water content and reinforcement ratio on shear strength of reinforced soil[J]. Hydrogeology&Engineering Geology,2018,45(2):51-58.(in Chinese)]
[7]张虎元,王少一,赵天宇,等.利用高密度电阻率法进行盐渍土含水率的测定[J].水文地质工程地质,2012,39(1):95-101.[ZHANG H Y,WANG S Y,ZHAO T Y, et al. Determination of moisture content in saline soil by high density resistivity method[J]. Hydrogeology&Engineering Geology,2012,39(1):95-101.(in Chinese)]
[8]魏雄,王仁波,李跃忠,等.基于GPS/GPRS的滑坡监测系统[J].仪器仪表学报,2008,29(11):2456-2450.[WEI X,WANG R B,LI Y Z,et al.Landslide monitoring system based on GPS/GPRS[J]. Chinese Journal of Scientific Instrument,2008,29(11):2456-2450.(in Chinese)]
[9]刘亚军,祝连庆,杨德斌,等.基于空气湿度的土壤含水量估计模型研究[J].仪器仪表学报,2016,37(11):2582-2587.[LIU Y J,ZHU L Q,YANG D B,et al. The Study of estimation model of soil moisture based on air humidity[J]. Chinese Journal of Scientific Instrument,2016,37(11):2582-2587.(in Chinese)]
[10]于永堂,张继文,郑建国,等.驻波比法测定黄土含水量的标定试验研究[J].岩石力学与工程学报,2015,34(7):1462-1469.[YU Y T,ZHANG J W,ZHENG J G,et al. Experimental study on calibration of water content in Loess by Bobbi method[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(7):1462-1469.(in Chinese)]
[11]许强,魏勇,彭大雷,等.泾阳南塬蒋刘4#滑坡特征及成因机制[J].水文地质工程地质,2018,45(1):123-130.[XU Q,WEI Y,PENG D L,et al.Landslide characteristics and genetic mechanism of the Jiang Liu 4#landslide in southern Jingyang Plateau[J]. Hydrogeology&Engineering Geology,2018,45(1):123-130.(in Chinese)]
[12]崔光耀,左奎现,张军徽,等.万梁高速某滑坡降雨入渗稳定性及处治技术研究[J].灾害学,2018,33(1):117-121.[CUI G Y,ZUO K X,ZHANG J H,et al. The study on rainfall infiltration stability and treatment technology of a landslide at Wanliang Expressway[J]. Journal of Catastrophology,2018,33(1):117-121.(in Chinese)]
[13]胡建东,段铁城,石建华,等.土样含水量快速测定传感技术研究[J].仪器仪表学报,2003,24(2):142-145.[HU J D,DUAN T C,SHI J H,et al.The Study on sensing technology for rapid determination of water content in soil samples[J].Chinese Journal of Scientific Instrument,2003,24(2):142-145.(in Chinese)]
[14]罗迪汉,宇宙,王勇,等. FDR-土壤水分测定仪标定方法初探[J].内蒙古林业科技,2015,41(1):31-35.[LUO D H,YU Z,WANG Y,et al. Preliminary study on calibration method of FDR-soil moisture meter[J]. Journal of Inner Mongolia Forestry Science and Technology, 2015, 41(1):31-35.(in Chinese)]
[15]刘志刚,李萍萍.电介质型水分传感器测定栽培基质含水率的标定模型[J].农业工程学报,2011,27(2):199-202.[LIU Z G,LI P P. Calibration model for measuring moisture content of culture media by dielectric moisture sensor[J]. Transaction of the Chinese Society of Agricultural Engineering,2011,27(2):199-202.(in Chinese)]
[16]周旭辉,王黎明,王建波,等. FDR自动土壤水分数据标定问题及解决方法[J].气象科技,2016,44(4):535-541.[ZHOU X H,WANG L M,WANG J B, et al. FDR automatic soil moisture data calibration problems and Solutions[J]. Meteorological science and technology,2016,44(4):535-541.(in Chinese)]
[17]杨静,陈洪松,王升,等. TDR测定喀斯特地区石灰土含水量的标定研究[J].中国岩溶,2017,36(1):76-80.[YANG J,CHEN H S,WANG S,et al.Determination of moisture content of lime soil in Karst area by TDR[J]. Carsologica Sinica,2017,36(1):76-80.(in Chinese)]
[18]陈海波,冶林茂,李树岩,等. FDR土壤水分自动监测仪的标定与检验[J].传感器与仪器仪表,2009,25(11):104-106.[CHEN H B,YE L M,LI S Y,et al. Calibration and inspection of FDR soil moisture automatic monitor[J]. Sensors and Instruments,2009,25(11):104-106.(in Chinese)]
[19]王波. FDR土壤含水量传感器应用于路面结构的标定研究[J].北方交通,2013,3(6):3-8.[WANG B. Calibration Research of application of FDR soil moisture sensor in pavement structure[J].Northern traffic,2013,3(6):3-8.(in Chinese)]
[20]吕海波,赵艳林.时域反射法测量膨胀土含水量试验研究[J].岩石力学与工程学报,2008,27(12):2568-2574.[LV H B,ZHAO Y L. Experimental study on measuring water content of expansive soil by time domain reflectometry[J]. Chinese Journal of Rock Mechanics and Engineering,2008,27(12):2568-2574.(in Chinese)]
[21]李东南.土壤含水量和电导率的多功能传感器的研制[D].哈尔滨:哈尔滨工业大学,2012.[LI D N.Development of multifunctional sensor for soil water content and electrical conductivity[D]. Harbin:Harbin Institute of Technology,2012.(in Chinese)]
[22]刘敏,王亮亮,蔡秋鹏. FDR和TDR测定几种典型土壤含水量的对比分析[J].水利信息化,2016,6(6):32-36.[LIU M,WANG L L,CAI Q P,et al.Comparative analysis of FDR and TDR for determination of water content in several typical soils[J]. Water resources informatization,2016,6(6):32-36.(in Chinese)]
[23]郑茹梅,李子忠.基于相位差的时域反射仪测定土壤含水量的标定和田间验证[J].中国农业大学学报,2011,16(1):100-104.[ZHENG R M,LI Z Z.Calibration and field validation of time domain reflectometry for measuring soil water content based on phase difference[J]. Journal of China Agricultural University,2011,16(1):100-104.(in Chinese)]
[2] GASCH,BROWN,CHAHAL,et al. A field—scale sensor network data set for monitoring and modeling the spatial and temporal variation of soil water content in a dryland agricultural field[J]. Water Resources Research,2017,53(12):10878-10887.
[3] WANG Liming,ZHANG Xuefen,ZHOU Xuhui,et al. Correction method of undisturbed soil moisture measurements from FDR soil moisture sensors[J].Water Resources Research, 2016, 44(3):347-353.
[4] GUO Jia,WANG Zhen-ying,ZHENG Yu-suo,et al.Research and application of new FDR soil water and salt integrated sensor calibration[J]. Soil and fertilizer in China,2016,12(6):156-161.
[5]曹鼎峰,施斌,顾凯,等.土的含水率AHFO法测量中分段函数模型建立[J].水文地质工程地质,2016,43(6):41-47.[CAO D F,SHI B,GU K,et al. Establishment of piecewise function model for measuring soil moisture content by AHFO method[J].Hydrogeology&Engineering Geology,2016,43(6):41-47.(in Chinese)]
[6]沙琳川,王桂尧,张永杰,等.含水率与加筋率对加筋土抗剪强度的影响规律研究[J].水文地质工程地质,2018,45(2):51-58.[SHA L C,WANG G Y,ZHANG Y J,et al. The study of influence of water content and reinforcement ratio on shear strength of reinforced soil[J]. Hydrogeology&Engineering Geology,2018,45(2):51-58.(in Chinese)]
[7]张虎元,王少一,赵天宇,等.利用高密度电阻率法进行盐渍土含水率的测定[J].水文地质工程地质,2012,39(1):95-101.[ZHANG H Y,WANG S Y,ZHAO T Y, et al. Determination of moisture content in saline soil by high density resistivity method[J]. Hydrogeology&Engineering Geology,2012,39(1):95-101.(in Chinese)]
[8]魏雄,王仁波,李跃忠,等.基于GPS/GPRS的滑坡监测系统[J].仪器仪表学报,2008,29(11):2456-2450.[WEI X,WANG R B,LI Y Z,et al.Landslide monitoring system based on GPS/GPRS[J]. Chinese Journal of Scientific Instrument,2008,29(11):2456-2450.(in Chinese)]
[9]刘亚军,祝连庆,杨德斌,等.基于空气湿度的土壤含水量估计模型研究[J].仪器仪表学报,2016,37(11):2582-2587.[LIU Y J,ZHU L Q,YANG D B,et al. The Study of estimation model of soil moisture based on air humidity[J]. Chinese Journal of Scientific Instrument,2016,37(11):2582-2587.(in Chinese)]
[10]于永堂,张继文,郑建国,等.驻波比法测定黄土含水量的标定试验研究[J].岩石力学与工程学报,2015,34(7):1462-1469.[YU Y T,ZHANG J W,ZHENG J G,et al. Experimental study on calibration of water content in Loess by Bobbi method[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(7):1462-1469.(in Chinese)]
[11]许强,魏勇,彭大雷,等.泾阳南塬蒋刘4#滑坡特征及成因机制[J].水文地质工程地质,2018,45(1):123-130.[XU Q,WEI Y,PENG D L,et al.Landslide characteristics and genetic mechanism of the Jiang Liu 4#landslide in southern Jingyang Plateau[J]. Hydrogeology&Engineering Geology,2018,45(1):123-130.(in Chinese)]
[12]崔光耀,左奎现,张军徽,等.万梁高速某滑坡降雨入渗稳定性及处治技术研究[J].灾害学,2018,33(1):117-121.[CUI G Y,ZUO K X,ZHANG J H,et al. The study on rainfall infiltration stability and treatment technology of a landslide at Wanliang Expressway[J]. Journal of Catastrophology,2018,33(1):117-121.(in Chinese)]
[13]胡建东,段铁城,石建华,等.土样含水量快速测定传感技术研究[J].仪器仪表学报,2003,24(2):142-145.[HU J D,DUAN T C,SHI J H,et al.The Study on sensing technology for rapid determination of water content in soil samples[J].Chinese Journal of Scientific Instrument,2003,24(2):142-145.(in Chinese)]
[14]罗迪汉,宇宙,王勇,等. FDR-土壤水分测定仪标定方法初探[J].内蒙古林业科技,2015,41(1):31-35.[LUO D H,YU Z,WANG Y,et al. Preliminary study on calibration method of FDR-soil moisture meter[J]. Journal of Inner Mongolia Forestry Science and Technology, 2015, 41(1):31-35.(in Chinese)]
[15]刘志刚,李萍萍.电介质型水分传感器测定栽培基质含水率的标定模型[J].农业工程学报,2011,27(2):199-202.[LIU Z G,LI P P. Calibration model for measuring moisture content of culture media by dielectric moisture sensor[J]. Transaction of the Chinese Society of Agricultural Engineering,2011,27(2):199-202.(in Chinese)]
[16]周旭辉,王黎明,王建波,等. FDR自动土壤水分数据标定问题及解决方法[J].气象科技,2016,44(4):535-541.[ZHOU X H,WANG L M,WANG J B, et al. FDR automatic soil moisture data calibration problems and Solutions[J]. Meteorological science and technology,2016,44(4):535-541.(in Chinese)]
[17]杨静,陈洪松,王升,等. TDR测定喀斯特地区石灰土含水量的标定研究[J].中国岩溶,2017,36(1):76-80.[YANG J,CHEN H S,WANG S,et al.Determination of moisture content of lime soil in Karst area by TDR[J]. Carsologica Sinica,2017,36(1):76-80.(in Chinese)]
[18]陈海波,冶林茂,李树岩,等. FDR土壤水分自动监测仪的标定与检验[J].传感器与仪器仪表,2009,25(11):104-106.[CHEN H B,YE L M,LI S Y,et al. Calibration and inspection of FDR soil moisture automatic monitor[J]. Sensors and Instruments,2009,25(11):104-106.(in Chinese)]
[19]王波. FDR土壤含水量传感器应用于路面结构的标定研究[J].北方交通,2013,3(6):3-8.[WANG B. Calibration Research of application of FDR soil moisture sensor in pavement structure[J].Northern traffic,2013,3(6):3-8.(in Chinese)]
[20]吕海波,赵艳林.时域反射法测量膨胀土含水量试验研究[J].岩石力学与工程学报,2008,27(12):2568-2574.[LV H B,ZHAO Y L. Experimental study on measuring water content of expansive soil by time domain reflectometry[J]. Chinese Journal of Rock Mechanics and Engineering,2008,27(12):2568-2574.(in Chinese)]
[21]李东南.土壤含水量和电导率的多功能传感器的研制[D].哈尔滨:哈尔滨工业大学,2012.[LI D N.Development of multifunctional sensor for soil water content and electrical conductivity[D]. Harbin:Harbin Institute of Technology,2012.(in Chinese)]
[22]刘敏,王亮亮,蔡秋鹏. FDR和TDR测定几种典型土壤含水量的对比分析[J].水利信息化,2016,6(6):32-36.[LIU M,WANG L L,CAI Q P,et al.Comparative analysis of FDR and TDR for determination of water content in several typical soils[J]. Water resources informatization,2016,6(6):32-36.(in Chinese)]
[23]郑茹梅,李子忠.基于相位差的时域反射仪测定土壤含水量的标定和田间验证[J].中国农业大学学报,2011,16(1):100-104.[ZHENG R M,LI Z Z.Calibration and field validation of time domain reflectometry for measuring soil water content based on phase difference[J]. Journal of China Agricultural University,2011,16(1):100-104.(in Chinese)]
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |