| 摘要 |
PURPOSE:To confirm the injection range of a grout by a method in which a swivel closing an electric circuit, a double-tube connection rod with a cable conduit, and a connection rod having an electrode connected to its outside are connected. CONSTITUTION:A confirming device, in which a swivel having a terminal 1 connected with a cable connector 6 through a rotary terminal 3 and a brush 4 on its top is connected with a connecting rod, and a connecting rod with an electrode, is inserted in places A and B different from a grout injection port C. Output from the terminal of the swivel is connected to a resistance measurer, and the electric resistances when applying voltage between A-C and B-C are measured. |
