DETECTION AND CONFIRMATION SYSTEM FOR GROUNDWATER VEINS AND FOR GROUNDWATER IN GROUNDWATER VEINS

摘要

The present invention provides a system that detects and confirms groundwater veins in a specified ground area and enables pinpoint detection and confirmation of groundwater in groundwater veins.　The present invention makes groundwater veins in the specified ground area visible two-dimensionally and comprises: a plurality of electrode groups 22 arranged in the specified ground area; a measurement point switching unit 23 that uses two poles of a four-pole electrode 22a in a dipole/dipole arrangement among the plurality of electrode groups 22 as potential electrodes, uses the other two poles as current electrodes, combines and switches these, and implements horizontal and underground vertical exploration; a measurement means 25 that measures at each measurement point over the entire ground area; and a calculation means 31 for resistivity values at each measurement point that calculates the resistivity values for two frequencies (high and low) in the horizontal and vertical directions at each measurement point in the ground area. In addition, the present invention is configured so as to find the impedance effect at each measurement point, on the basis of calculated resistivity values for the high and low frequencies at each measurement point, estimate the presence of groundwater veins at measurement positions that have an impedance effect of 1, and provide three-dimensional display.