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

近年来，虽然以土壤污染和地下水污染为代表的地面环境问题成为全国各地普遍存在的问题，但为了评价污染物在地下的行为，为了改善污染土壤，方便、准确地测量土壤的污染程度是非常重要的。然而，在这种方法中，目前以样品作为土壤污染程度的测量方法实际上是单一的，很难在现场掌握土壤污染随时间的变化程度。然后，在本研究中，在将所拥有的FDR-V测量方法作为目前土壤污染程度的调查设备时，首先，通过实验室测试来继续掌握所拥有的FDR-V设备在本财政年度的基本物理性质，以使其发展成为目前的现场测量系统。然后，按频率较低或较小损耗的设备…针对现有设备的缺陷，开发了更多的现场测量方式，研究了现场测量污染水平随时间变化的方法，研究了该系统的数据采集系统和校准方法，以使FDR-V测量装置能够更准确地测量，具体地说，保持了电缆的噪声损失，可以断开测量探头，改进了系统，实现了数据的快速采集。针对现有设备价格低廉的缺点，研制了频率或小磁场测量型损耗设备。测量频率测量结果常规100 MHz~3 GHz。然后，通过对现场测量中噪声产生因素的检测、电缆极限长度的检测等，验证了现场测量随时间变化的污染水平的方法，并制定了噪声去除方法。为了掌握材料复介电常数特性，利用新老2的FDR-V测量装置对几种土样进行了室内测量，作为测量的依据。研究了一种通过注入液体来测量地面有效孔隙率的技术，该技术不同于地下的水。较少

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