A monitoring method for breakwater foundation settlement

Abstract

The invention discloses a monitoring method of breakwater foundation settlement. The monitoring method of breakwater foundation settlement comprises the following steps: 1) before construction of a breakwater, arranging a steel wire hose through which a traction steel wire penetrates on a breakwater foundation; driving two fixing steel piles at the toes of the two sides of the breakwater, respectively fixing pipe heads at the two ends of the steel wire hose at the tops of the two fixing steel piles, keeping the pipe heads to be higher than a water surface and filling water into the steel wire hose; 2) measuring the water level value of the water in the steel wire hose; 3) threading an automatic traction water level acquisition instrument for the traction steel wire through the steel wire hose and acquiring the water level value of the water in the steel wire hose; 4) subtracting the value obtained in the step 3 from the value obtained in the step 2 to obtain a first elevation value; 5) after a period of time, repeating the step 2 to the step 4 to obtain a second elevation value; 6) subtracting the second elevation value from the first elevation value to obtain a settlement value; 7) repeating the step 2 to the step 6 for multiple times to obtain continuous settlement. The monitoring method of breakwater foundation settlement has the advantages that the monitoring method is simple and convenient, the interference to construction is small and the protection is facilitated.

Description

technical field [0001] The invention relates to a monitoring method for foundation settlement, in particular to a monitoring method for breakwater foundation settlement. Background technique [0002] In the construction of deep water breakwaters or submerged embankments, settlement monitoring is required to ensure construction safety. At present, there are mainly two methods for subsidence monitoring of deep-water soft foundations, one is to lay settlement pans, and the other is to use electrical measurement methods. Differential pressure sedimentation instruments and other instruments are used. Since the settling pan must be laid along the axis of the embankment, it interferes a lot with the construction. The collision of the construction ship and the riprap construction often encounter the settling pan, and the settling pan is often damaged, so it is very difficult to protect it. After the electric measurement method is laid at the axis, the cables can be led to the slop...

AI Technical Summary

Problems solved by technology

Since the settling pan must be laid along the axis of the embankment, it will greatly interfere with the construction. The collision of construction ships and the construction of riprap often encounter the settling pan, and the settling pan is often damaged, making protection very difficult.

After the electric measurement method is laid at the axis, the cables can be led to the slope foot of the embankment for observation, which has the advantage of little interference to the construction, but the method is expensive and complicated to operate, and requires the cooperation of divers, and the cables need to be Leading from the axis of the breakwater to the foot of the slope, it is easy to damage the cables during riprap construction, and has not been widely used

After the instrument is damaged, the data collection will be discontinuous, which will affect the accuracy of the monitoring data, thereby delaying the progress of the project and causing serious consequences

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