|
| | Abstract | | In order to identify metal-enriched zone in landfills and utilize valuable metals as urban mining, the resistivity and induced polarization measurements have been carried out as a nondestructive three-dimensional prospecting. The authors conducted some experiments for further improvement of the induced polarization measurement. In the experiments, model spheres consisting of a mixture of cement and iron sulfide, were buried in simulated landfills. We set electrodes on the surface of simulated landfills, and measured resistivity and chargeability. The measurements were carried out by changing the duration time of the polarization current, in order to obtain the proper time. As a result, it is required to lengthen the duration time of the polarization current for the purpose of grasping the IP anomaly clearly. On the other hand, the time is preferable not to be too long for grasping the resistivity structure only. Also, if the time is sufficiently long, the content ratios of iron sulfide and the specific surface area in the model spheres have a good correlation with the measured magnitude of IP effects. |
|
|
|
| |
|