SUBSIDENCE MEASURING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a subsidence measuring apparatus which achieves a very high reliability of measured values of the degree of subsidence than ever classified by the stratums by eliminating disturbances in the navigation of reclaiming boats and work by a banking work vehicle while being free from significant restriction in the measuring range or in the measuring capacity. SOLUTION: This measuring apparatus is provided with an anchor 1 which has a measuring rod housing groove 4 cut internally downward from an upper end opening to be securely suspended under the burying ground 2, a cover tube 6 cylindrical and free to extend in the longitudinal direction thereof, a subsidence meter 7 mounted on the lower end opening of the cover tube 6 and a measuring rod 9 which is housed in the cover tube to be mounted movably in the axis center thereof to allow housing thereof into the measuring rod housing groove 4. It also has a first measuring unit 10 laid on an upper part of the anchor 1.