Device for real-time measurement of deep horizontal displacement and surface settlement of soil

Abstract

The invention discloses a device for the real-time measurement of the deep horizontal displacement and surface settlement of soil. The device comprises a displacement measurement sensor, a distributedoptical fiber demodulating device and a data analysis system. The displacement measurement sensor comprises a monitoring rod, a U-shaped optical fiber in the whole arranged on the monitoring rod, anda settlement measurement sensor arranged at an upper end part of the monitoring rod. The monitoring rod includes a measuring rod with a tip at a bottom and an elongated rod screwed to the upper partof the measuring rod. One end of the optical fiber is connected to the distributed optical fiber demodulating device, and the data analysis system is connected to the distributed optical fiber demodulating device. Compared with the traditional monitoring technology, the technology of the invention has the advantages that drilling is not needed, the measuring rod is vertically punched into the soilsection by section by using a static load extrusion method, the construction is convenient and rapid, the monitoring rod and the optical fiber can be recycled and reused after a project is finished,the design is simple, settlement monitoring and horizontal displacement monitoring are integrated into one body, the measuring speed is fast, the display is visual, and the engineering application ishigh.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering monitoring, in particular to a device for real-time measurement of deep horizontal displacement and surface settlement of soil. Background technique [0002] The existing method of measuring the deep horizontal displacement of the soil is mainly manual segmented measurement, the results of this measurement method are discontinuous, and there are measurement blind spots; the measurement process takes a long time, and real-time and automatic monitoring cannot be realized; the movable inclinometer It is easily damaged and has poor durability; when the soil deforms greatly, the inclinometer cannot pass through the inclinometer after the inclinometer pipe is bent beyond a certain angle, resulting in the failure of the measurement point; If the meter fails to pass, it will also cause the failure of the measuring point. Contents of the invention [0003] In order to solve the above pr...

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Problems solved by technology

[0002] The existing method of measuring the deep horizontal displacement of the soil is mainly manual segmented measurement, the results of this measurement method are discontinuous, and there are measurement blind spots; the measurement process takes a long time, and real-time and automatic monitoring cannot be realized; the movable inclinometer It is easily damaged and has poor durability; when the soil deforms greatly, the inclinometer cannot pass through the inclinometer after the inclinometer pipe is bent beyond a certain angle, resulting in the failure of the measurement point; If the meter fails to pass, it will also cause the failure of the measuring point

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