| 摘要 |
PURPOSE:To detect displacement of a ground throughout multilayer, by a method wherein a displacement detecting device comprises a displacement converter, a displacement transmission rod, an anchor part, and a hydraulic jack, and is press-fitted in and secured to the side wall of an observation hole by unfolding the anchor part. CONSTITUTION:A displacement transmission rod 3 made of stainless is inserted through an observation hole 2, and a hydraulic jack 4 is secured to the forward end side thereof. A piston rod 6 is protruded from the hydraulic kack 4, and the piston rod 6 is pushed out through a hydraulic pipe 7. A first cylinder 9 and a second link 11 are disposed, a slider crank mechanism is formed with a slider 8 and the displacement transmission rod 3, and is adapted to form an anchor part 15, cut through the side wall of the observation hole 2 and secured thereto, when the mechanism is unfloded. This enables a multistage anchor to be accurately, reliably, and easily located in a given depth position in an observation hole bored in a ground. |
