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Student Number 91322058
Author Hong-Long Yang(楊弘倫)
Author's Email Address No Public.
Statistics This thesis had been viewed 3701 times. Download 3192 times.
Department Civil Engineering
Year 2003
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title 時域反射儀應用於土壤含水量及地下水監測技術
Date of Defense 2004-07-05
Page Count 120
Keyword
  • electrical conductivity
  • fines content
  • pore water
  • Time Domain reflectometry
  • volumetric water content
  • Abstract Time Domain reflectometry (TDR) evaluates the apparent dielectric constant, εa, of soil by measuring the travel time of an electromagnetic pulse through a sensor. Correlations between the apparent dielectric constant, εa, and the volumetric water content (θ) of soils can be established by regression.
    A TDR probe is capable of measuring the dielectric constant and electrical conductivity (EC) of soil simultaneously. Overestimate of the water content can occur to soils with high fines content and/or salinity, which exhibit high conductivity level that affects the estimate of moisture by TDR. Further, the electrical conductivity is a main factor affecting the apparent dielectric constant determined by TDR. This influence is investigated theoretically and experimentally.
    There are two points for attention of measuring content water. First, the reflection of TDR becomes much reduced in soils with high fines content and high pore water conductivity, thus affects the precision in moisture determination. Therefore, a detailed evaluation of the EC on TDR measurements is required, in order to exploit the full potential of the promising TDR technique. By using soils with varying fines contents and pore water with varying concentrations in electrolyte, this study presents information in these regards.
    In application aspect, utilizing the electrical responses of the TDR to monitor the groundwater level and saline water intrusion will benefit the development of the monitoring system at waste disposal sites.
    Table of Content 中文摘要                           Ⅰ
    英文摘要                           Ⅱ
    誌 謝           Ⅲ
    目  錄                          Ⅳ
    表 目 錄                           Ⅶ
    圖 目 錄                           Ⅷ
    符  號                          XⅡ
    第一章 緒論
    1.1 前言............................................................................................1
    1.2研究動機.....................................................................................2
    1.3 研究目的....................................................................................3
    1.4研究架構及流程.........................................................................4
    第二章 文獻回顧
    2.1 TDR簡介....................................................................................5
    2.1.1 基本原理.........................................................................5
    2.1.2 TDR組成元件介紹.........................................................6
    2.2 TDR發展史..............................................................................10
    2.2.1介電原理發展................................................................10
    2.2.2破壞機制發展................................................................11
    2.3 TDR基本電學性質..................................................................12
    2.3.1特徵阻抗與反射係數....................................................13
    2.3.2 TDR波形.......................................................................14
    2.3.3電介質............................................................................15
    2.3.4極化作用........................................................................16
    2.3.5介電度............................................................................18
    2.3.6介電常數........................................................................19
    2.3.7視介電常數....................................................................20
    2.3.8導電度............................................................................24
    2.4頻率分析...................................................................................26
    2.4.1頻率帶寬........................................................................26
    2.4.2介電頻譜........................................................................27
    2.4.3 TDR頻寬範圍...............................................................28
    第三章 量測含水量與導電度原理
    3.1 量測含水量原理......................................................................30
    3.1.1基本概念........................................................................30
    3.1.2視長度探討....................................................................31
    3.1.3 TDR圖形校正步驟.......................................................35
    3.2導電度量測原理.......................................................................35
    3.3空間影響範圍...........................................................................36
    3.4 溫度影響..................................................................................38
    3.5經驗式與迴歸選用...................................................................39
    3.5.1多次迴歸公式................................................................39
    3.5.2平方根線性迴歸公式....................................................40
    3.6 TDR含水量監測系統---LTPP測站........................................41
    第四章 試驗儀器及程序
    4.1 時域反射儀器設備..................................................................47
    4.2 試體設計..................................................................................51
    4.3 試驗方法..................................................................................54
    4.3.1細顆粒土壤土樣............................................................54
    4.3.2粗顆粒土壤土樣............................................................57
    4.4 試驗步驟...................................................................................57
    第五章 實驗結果與分析
    5.1端頭安置探討...........................................................................58
    5.2電解溶液之濃度與介電常數...................................................60
    5.3影響含水量迴歸模式因子探討...............................................65
    5.3.1細料含量影響分析........................................................65
    5.3.2含鹽分土壤影響分析....................................................75
    5.4地下水監測...............................................................................78
    5.4.1實驗背景........................................................................78
    5.4.2模擬地下水位升高........................................................81
    5.4.3海水與淡水入滲差異....................................................88
    5.5模擬海水入侵地下水機制.......................................................91
    第六章 結論與建議
    6.1結論.........................................................................................100
    6.2建議.........................................................................................101
    參考文獻........................................................................................................103
    附錄A.............................................................................................................110
    附錄B.............................................................................................................114
    附錄C.............................................................................................................118
    附錄D............................................................................................................120
    Reference 參考文獻
    周家榮,「時域反射圓錐貫入器與孔內裝置之研發」,碩士論文,國立交通大學土木工程研究所,新竹 (2001)。
    陸果,基礎物理學,科技圖書公司,第一版,臺北市 (2001)。
    萬鑫森,基礎土壤物理,茂昌圖書有限公司,第一版,臺北市 (1984)。
    Alharthi, A. and Lang, J. (1987). “Soil Water Saturation: Dielectric Determination. ” Water Resources Research, Vol. 23, pp. 591-595.
    Amato, M. and Ritchie, J.T. (1995). “Small Spatial Scale Soil-water Content Measurement with Time-Domain reflectometry.” Soil Science Society of America Journal, Vol. 54, pp. 1-6.
    Annan, A.P. (1977).“Time Domain Reflectometry-Air Gap Problem for Parallel Wires Transmission Lines, Report of Activities, Part B.” Geological Survey of Canada, Vol. 04.08, pp. 77-84.
    ASTM, D698-91 (1998). Standard Test Method for Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft-lbf/ft3 (600 kN-m/m3)), Annual Book of ASTM Standards, Vol. 04.08, pp. 77-84.
    ASTM, D2216-92 (1998). Standard Test Method for Laboratory Determination of Water (Moisture) Content of Soil and Rock, Annual Book of ASTM Standards, Vol. 04.08, pp. 295-298.
    ASTM, D6565-00 (2000). Standard Test Method for Determination of Water (Moisture) Content of Soil by the Time-Domain Reflectometry (TDR) method, Annual Book of ASTM Standards, Vol. 04.08, pp. 1118-1122.
    ASTM, D6758-02 (2002). Standard Test Method for Determination of Water Content and Density of Soil in Place by Time Domain Reflectometry (TDR), Annual Book of ASTM Standards, Vol. 04.08, pp. 1311-1320.
    Cabral, A.R., Burnotte, F., and Lefebvre, G.(1999). “Application of TDR Technology to Water Content Monitoring of Capillary Barriers Made of Pulp and Paper Residues” Geotechnical Testing Journal, Vol 22, No. 1, pp. 39-43.
    Caron, J., Riviere, Louis-Marie, Charpentier, S., Renault, P., and Michel, Jean-Charles (2002). “Using TDR to Estimate Hydraulic Conductivity and Air Entry in Growing Media and Sand.” Soil Science Society of America Journal, Vol.66, pp. 373-383.
    Dalton, F.N., Herkelrath, D.S., and Rhoades, J.D. (1984).“Time Domain Reflectometry: Simultaneous Measurements of Soil Water Content and Electrical Conductivity with a Single Probe.” Science, Vol. 224, pp. 989-990.
    Davis, J.L. and Annan, A.P. (1977).“Electromagnetic Determination of soil moisture: Progress report Ι.” Canadian Journal of Remote Sensing, Vol. 3, pp. 76-86.
    Davis, J.L. and Chudobiak, W.J. (1975).“In-site Meter for Measuring Relative Permittivity of Soils. ” Geological Survey of Canada, Paper 75-1A, pp. 75-79.
    Dirksen, C.E. and Dasberg, S. (1993).“Four Component Mixing Model for Improved Calibration of TDR Soil Water Content Measurements.” Soil Science Society of America Journal, Vol. 57, pp. 660-667.
    Difenderger, B.K., Imad L. AL-Qadl, Amara Louliz (2000). “Laboratory Calibration and Field Verification of Soil Moisture Content Using Two Types of Time-Domain Reflectometry Probes.” Transportation Research Board, 79th Annual Meeting, Paper No.00-1027.
    Dowding, C.D. (2002). “Geo-Measurements with Metallic TDR Cable Technology for Infrastructure Surveillance.” Transportation Research Board , 79th Annual Meeting , Paper No. 00531.
    Dowding, K. J., Beck, J. V., and Blackwell, B. F. (1999) . “Estimating Temperature - Dependent Thermal Properties,” Journal of Thermo physics and Heat Transfer, Vol 13, No. 3, pp. 328-336.
    Fellner-Feldegg, H. (1969). “The Measurement of Dielectrics in the Time Domain.” Journal Physical Chemistry, Vol. 73, pp. 616-623.
    Hasted, J.B.(1973). Aqueous Dielectrics, Chapman and Hall, London.
    Heimovaara, T.J. (1994). “Frequency Domain Analysis of Time Domain Reflectrometry Waveforms, I, Measurement of the Complex Dielectric Permittivity of Soils.” Water Resources Research, Vol. 30, pp. 189-199.
    Hilhorst, M.A. and Dirksen, C. E.(1994).“Dielectric Water Content Sensors: Time Domain Versus Frequency Domain.” Proceedings of the Symposium on Time Domain Reflectometry in Environmental, Infrastructure, and Mining Applications. ” Evanston, Illinois, Sept 7-9, U.S. Bureau of Mine, Special Publication SP 19-94, NTIS PB95-105789, pp. 23-33.
    Jiang, Y.J. and Tayabji, S.D. (1999).“Evaluation of In-site Moisture Content at LTPP Seasonal Monitoring Program Sites.” Transportation Research Board, 78th Annual Meeting, Paper No. 990395.
    Jiang Y. J. and Tayabji, S.D., Analysis of Time Domain Reflectometry Data From LTPP Seasonal Monitoring Program Test Sections, final report prepared for FHWA, Contract No. DTFH61-96-C-0003, July 1998.
    Kelly, S.F., Selker, J.S. and Green, J.L. (1995).“Using Short Soil Moisture Probes with High Bandwidth Time-domain reflectometry instruments,” Soil Science Society of America Journal, Vol. 59,pp. 97-102.
    Klemunes, J.A. Jr. (1995).“Determining Soil Volumetric Moisture Content Using Time Domain Reflectometry,” M.Sc. thesis, University of Maryland.
    Knight, J.H. (1992).“Sensitivity of Time Domain Reflectometry Measurement to Lateral Variations in Soil Water Content.” Water Resources Research, Vol. 28, pp. 2345-2352.
    Knight, J.H., White, I., and Zegelin, S.I. (1994).“Sampling Volume of TDR Probes for Water Content Monitoring.”Proceedings of the Symposium on Time Domain Reflectometry in Environmental, Infrastructure, and Mining Applications, Evanston, Illinois, Sept 7-9,U.S. Bureau of Mines, Special Publication SP 19-94, NTIS PB95-105789, pp. 93-104.
    Larossa Rodriguez C.G., da Cunha Neto J.A.B.,and Prata, A.T. (1999). “Using Time Domain Reflectometry to Measure Moisture Content Discontinuity of an Artificial Soil.” Experimental Thermal and Fluid Science, Vol. 20, pp. 25-33.
    Ledieu, J., De Ridder, P., and Dautrebande, A. (1986).“A Method for Measuring Soil Moisture by Time Domain Reflectometry.” Journal of Hydrology, Vol. 88, pp. 319-328.
    Mitchell, J.K. (1976). Fundamentals of Soil Behavior, John Wiley & Sons, New York.
    Mojid, M.A., Wyseure, G.C.L., and Rose, D.A. (2003). “Electrical Conductivity Problems Associated with Time-Domain Reflectometry (TDR) Measurement in Geotechnical Engineering. ” Geotechnical and Geological Engineering, Vol. 21, pp. 243–258.
    Nadler, A., Dasberg, S., Lapid, I. (1991). “Time Domain Reflectometry Measurements of Water Content and Electrical Conductivity of Layered Soil Columns.” Soil Science Society of America Journal, Vol. 55, pp. 938-943.
    Noborio, K. (2001).“Measurement of Soil Water Content and Electrical Conductivity by Time Domain Reflectometry: a Review,” Computer and Electrical in Agriculture, Vol. 31, pp. 213-237.
    Quadri, M.B., Clothier, B.E., Vaucline, M. and Geen, S.R. (1994).“Ax symmetric Transport of Water and Solute underneath a disk permeameter: Experiment and numerical model.” Soil Science Society of America Journal, Vol. 58, pp. 696-703.
    Ranjan, R. and Domytrak, C.J.(1997).“Effective Volume Measured by TDR Miniprobes” , Transactions of the ASAE, Vol.40, No.4, pp. 1059-1066.
    Richter, C.A. (2001). “Application of LTPP Seasonal Monitoring Data to Evaluate Volumetric Moisture Predictions From the Integrated Climatic Model.”Transportation Research Board, 80th Annual Meeting Paper No. 01-3106.
    Robinson D.A., Gardner, C.M.K., and Cooper, J.D. (1999). “Measurement of relative permittivity in sandy soils using TDR, capacitance and theta probes: comparison, including the effects of bulk soil electrical conductivity.” Journal of Hydrology, Vol. 223, pp. 198-211.
    Robinson, R.A. and Stokes, R.H.(1959).“Electrolyte Solutions, 2nd edn. Butterworths, London.
    Roth, K.R., Schulin, R., Flühler, H., and Attinger, W. (1990). “Calibration of Time Domain Reflectometry for Water Content Measurement Using a Composite Dielectric Approach.”Water Resources Research, Vol. 26, pp. 2267-2273.
    Siddiqui, S.I., Drnevich, V.P., and Deschamps, R.J. (2000). “Time Reflectometry for Use in Geotechnical Engineering,”Geotechnical Testing Journal, Vol. 23, No.1, pp. 9-20.
    Stahli, M. and Stadler, D.(1997). “Measurement of water and solute dynamics in freezing soil columns with time domain reflectometry,” Journal of Hydrology, Vol. 195, No. 1- 4, pp. 352-369.
    Suwansawat, S., Gardner, C.M.K., and Cooper J.D. (1999). “Measurement of Relative Permittivity in Sandy Soils using TDR, Capacitance and Theta Probes: Comparison, including the Effect of Bulk Soil Electrical Conductivity.” Journal of Hydrology, Vol. 223, pp. 198-221.
    Topp, G.C., Davis, J.L., and Annan, A.P. (1980).“Electromagnetic Determination of Soil water Content: Measurement in Coaxial Transmission Lines. ” Water Resources Research, Vol. 16, pp. 574-582.
    Topp, G.C., and Davis, J.I. (1985). “Time Domain Reflectometry (TDR) and its Application to Irrigation Scheduling.” Advances in Irrigation, Vol. 3, pp. 107-127.
    Topp, G.C., Yanyka, M., Zebchuk, W.D., and Zegelin, S. (1988). “Determination of Electrical Conductivity Using Time Domain Reflectometry: Soil and Water Experiments in Coaxial Line.” Water Resources Research, Vol. 24, No. 7, pp. 945-952.
    Topp, G.C., Zegelin, S. and White, I. (1994). “Monitoring Soil Water Content Using TDR: An Overview of Progress.” Proceedings of the Symposium and Workshop on Time Domain Reflectometry in Environmental, Infrastructure and Mining Applications, Evanston, IL, SP 19-94.
    Topp, G.C., Zegelin, S. and White, I. (2000).“Impacts of the Real and Imaginary Components of Relative Permittivity on Time domain Reflectometry Measurements in Soils.” Soil Science Society of America Journal, Vol. 63, pp. 1244-1252.
    Whalley, W.R. (1993).“Considerations on the Use of Time Domain Reflectometry (TDR) for Measuring Soil Water Content.” Soil Science Society of America Journal, Vol. 44, pp. 1-9.
    White, I., Zegelin, S.J., Topp, G.C., and Fish, A. (1994).“Effect of Bulk Electrical Conductivity on TDR Measurement of Water Content in Porous Media,” Proceeding of the Symposium on Time Domain Reflectometry in Environmental, Infrastructure, and Mining Applications, NTIS PB95-105789, pp. 294-308.
    Wyseure, G.C.L., Mojid, M.A., and Malik, M.A. (1997). “Measurement of Volumetric Water Content by TDR in Saline soil.” Europe Journal of Soil Science, Vol. 48, pp. 347-354.
    Vanclooster, M., Mallant, D., Diels, J. and Feyen, J.(1993).“Determining Local-Scale Solute Transport Parameters Using Time-Domain Reflectometry (TDR), Journal of Hydrology, Vol.148, pp.93-107.
    Yong, R.N. and Hoppe, E.J. (1989).“Application of Electric Polarization to Contaminant Deletion in Soils.”Canadian Geotechnical Journal, Vol. 26, No. 4, pp. 536-550.
    Zegelin, S.J., White, I., Jenkins, D.R. (1989). “Improved Field Probes for Soil Water Content and Electrical Conductivity Measurement Using Time Domain Reflectometry.” Water Resources Research, Vol. 25, No. 11, pp. 2367-2376.
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  • Wei-Hsing Huang(黃偉慶)
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    Date of Submission 2004-07-14

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