山岳トンネル(9)

[VI-657] Inspection of effectiveness of TDEM method for tunnel Survey (Part 1)

〇Toshiaki Hara¹, Akira Saito (1.Toda corporation)

Keywords:Tunnel, TDEM, Resistivity

As a result of 25 TDEM tunnel surveys performed to improve the accuracy and efficiency of tunnel surveys, the effectiveness of TDEM tunnel surveys was examined by comparing the obtained resistivity with the tunnel face observation book from actual tunnel excavation. The nature was examined. Also, the results of elastic wave exploration were compared with the results of TDEM method by comparing the tunnel face observation book.