WORKING FACE FRONT PROBING DEVICE AND WORKING FACE FRONT PROBING METHOD

摘要

PROBLEM TO BE SOLVED: To easily and accurately probe a natural ground state in front of a working face, by using an inter-hole specific resistance tomographic technology.;SOLUTION: A working face front probing device comprises a plurality of boreholes 10 of drilling a hole in the substantially horizontal direction toward the front of a working face, an electric current electrode 30 installed in at least one of the boreholes 10, an electric potential electrode 40 for measuring electric potential generated by an electric current generated from the electric current electrode 30, a filler 20 filled in the boreholes 10 for installing the electric current electrode 30 and the electric potential electrode 40, and a geological analyzer 50 for analyzing geology of the working face front natural ground on the basis of the specific resistance distribution between the electric current electrode 30 and the electric potential electrode 40.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT