Study on the development of the in-situ measuring method of soil moisture and contamination by using the dielectric constant measurement.

利用介电常数测量的土壤水分和污染原位测量方法的研究开发

• 批准号: 13450194
• 负责人: NISHIGAKI Makoto
• 金额: $ 8.06万
• 依托单位: OKAYAMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13450194/
• 关键词: Soil and ground water contamination; The complex dielectric constant; The vector network analyzer; Volumetric moisture content; Consentration; Unsaturated Soil; The in-situ measurement; The infiltration characteristic; 原位置調査

Recently, though ground environmental problem represented for soil pollution and ground water pollution becomes a problem in national each place, it is important to conveniently and accurately measure the pollution level of the soil in order to evaluate the behavior of the pollutant in the underground, and in order to improve polluted soil. However, in this method, the method for taking sample as a measuring method of pollution level of the soil at present actually is the singularity, and it is difficult to grasp the time-dependent change degree of soil pollution in situ. Then, in this study, in making FDR-V measurement method of the possession to be investigation equipment degree of soil pollution at present, to begin with, a grasp of basic physical property by laboratory test was continued by the FDR-V equipment of the possession in this fiscal year in order to made to develop into measurement system in situ, at present. Then, the equipment of cheap loss by the frequency more or litt … More le field measurement type was developed based on the defect of the existing equipment, and the method for measuring the change of time-dependent pollution level in situ was studied.Data collection system and calibration method of the system were examined in order to enable the more exact measurement for FDR-V measuring device ever possessed, concretely, the loss of the noise by the cable was held, and the disconnection of the measurement probe was possible, and it improved it into the system for the rapid deta acquisition. Based on the defect of the existing equipment, it was cheap, and the equipment of loss by the frequency or little field measurement type was developed. Measuring frequency measurement result conventional 100MHz〜3GHz. Then, the usefulness was confirmed by carrying out examination of the generating factor of the noise in the field measurement and examination of limitative length of the cable, etc. in order to examine the method for measuring the change of time-dependent pollution level in situ, and establishing the removal method of the noise.The measurement in the indoor was carried out using the FDR-V measuring device of new and old 2 for several kinds soil sample of, pollutant in order to grasp the material complex permittivity characteristic as a basis of the measurement. The technique which measured the effective porosity of the ground from the change of the dielectric constant by injecting the liquid unlike the water in the ground, was examined. Less

近年来，虽然以土壤污染和地下水污染为代表的地下环境问题已成为全国各地的一个问题，但为了评价污染物在地下的行为，以及为了改善污染土壤，方便准确地测量土壤的污染水平是重要的。然而，在该方法中，目前土壤污染程度的测量方法采用的取样方法实际上是单一的，难以现场掌握土壤污染随时间的变化程度。然后，在本研究中，在使FDR-V测量方法的拥有目前的土壤污染程度的调查设备，开始，通过实验室测试的基本物理性质的掌握继续由FDR-V设备的拥有在本财政年度，以使发展成为测量系统，目前在现场。那么，便宜的设备受频率的损耗或多或少 ...更多信息 针对现有设备的不足，开发了现场测量型，研究了现场测量污染度随时间变化的方法，对数据采集系统和系统标定方法进行了研究，使FDR-V测量装置具有更高的测量精度，具体地说，保持了电缆噪声的损失，并且可以断开测量探头，并将其改进为快速数据采集系统。针对现有设备价格便宜的缺点，研制了频率损耗测量式或小场损耗测量式设备。测量频率测量结果常规100 MHz ~ 3GHz。然后，通过进行现场测量中的噪声产生因素的检查和电缆的限制长度的检查等来确认有用性，以检查用于测量现场随时间变化的污染水平的方法，并建立了噪声的去除方法，利用FDR-1000进行了室内测量，新、旧两种V型测量装置分别用于几种土壤样品的测量，以掌握污染物材料的复介电常数特性作为测量的依据。研究了通过向地下注入不同于水的液体来从介电常数的变化测量地下有效孔隙率的技术。少

项目成果

Nishigaki, M., M. Komatsu., M. Kim: "Experimental study on the measurement of the effective porosity of a porous media"The fell lecture summary in 2002 years in Japanese Assoc. of Groundwater Hydrology. 130-133 (2002)

Nishigaki, M.、M. Komatsu.、M. Kim：《多孔介质有效孔隙率测量的实验研究》2002年日本Assoc秋季讲座摘要。

Komatsu, M., M.Nishigaki: "Study on in-situ measuring system of subsurface contamination using frequency domain reflectometry"Fourth International Congress on Environmental Geotechnics, Brazil. (2002)

Komatsu, M., M.Nishigaki：“使用频域反射计对地下污染原位测量系统进行研究”，第四届国际环境岩土工程大会，巴西。

Nishigaki, M., M. Komatsu, M. Kim: "Measuring effective porosity using Frequency Domain Reflectometry with Vector Network Analyzer Systems"The Japan Soc. Of Civil Engineers China branch 54th meeting for reading research papers. III-78. 391-392 (2002)

Nishigaki, M.、M. Komatsu、M. Kim：“使用频域反射法和矢量网络分析仪系统测量有效孔隙度”日本协会。

西垣 誠, 小松 満, 金 萬鎰: "誘電率計測法を用いた地盤の有効間隙率の測定方法に関する基礎的研究"第38回地盤工学会研究発表会. (2003)

Makoto Nishigaki、Mitsuru Komatsu、Man-yin Kim：“利用介电常数测量法测量地面有效孔隙率的基础研究”第 38 届日本岩土工程学会研究报告（2003 年）。

Nishigaki, M., M.Komatsu M.Kim: "Measuring effective porosity using Frequency Domain Reflectometry with Vector Network Analyzer Systems"土木学会中国支部第54回研究発表会. III-78. 391-392 (2002)

Nishigaki, M., M.Komatsu M.Kim：“使用矢量网络分析仪系统的频域反射测量有效孔隙度”，日本土木工程师学会中国分会第 54 次研究报告 III-78（2002 年）。 ）