| 摘要 |
PROBLEM TO BE SOLVED: To provide: a measuring device which measures a cavity volume caused by ground subsidence below the lower surface of a top end coating concrete of an embankment, performs grout filling injection corresponding to the cavity volume, and has a performance of reinforcement and also a performance of removal of uplift pressure applied on a base surface of the embankment; and a method for installing the measuring device.SOLUTION: A device for both cavity volume inspection and uplift pressure removal includes: outer cylindrical bodies 18, 19, 20 installed in a top end coating concrete 3 of a bank body 1; cover bodies 29, 30 generally sealing upper end openings of the outer cylindrical body 18, 19, 20; settlement boards 24, 25 and check valves 27, 28 settled into the outer cylindrical bodies 18, 19, 20 following the settlement of the bank body soil 7. The cover bodies 29, 30 are blown away by compressed-air 14 generated inside the outer cylindrical body 18, 19, 20 caused by uplift pressure that an embankment 1 receives due to rise of a water level, and become detachable. |
