SEGJ Technical Conference

A case study of the corrosion risk of industrial water pipeline by investigation of soil using high-frequency AC resistivity measurement

Abstract In Japan, water pipes had been constructed mainly in the period of high economic growth (1970s). The useful life designated by law of the water pipe is established as (for? to?) 40 years. It has been 30~50 years since construction of such water pipes, and recently, rapid aging of them has been a problem of subsurface infrastructure. In this study, we have applied our developing high-frequency AC resistivity measurement system to this problem. High-frequency AC resistivity measurement is a non-excavating method using roller type electrodes. Previously, we have investigated typical water supply pipes, and in this study, industrial water pipes with larger diameter water was explored. We have examined data acquisition procedures quality of data from field measurements. In addition, we have been developing (developed) 1D inversion based on genetic algorithm and evaluated the analysis results.