Sealed Liquid Pressure Differential Layered Settlement Gauge and Its Embedding and Measurement Method

Abstract

The invention provides a sealed liquid differential pressure layered settlement gauge and an embedding and measuring method thereof. The settlement gauge comprises a settlement plate, a top hydraulic sensor, a middle hydraulic sensor group and a bottom hydraulic sensor. The top hydraulic sensor is fixedly installed below a settlement plate through a flange and comprises a liquid tube with a sealed tube opening. The middle hydraulic sensor group comprises at least one hydraulic sensor and anchor flukes fixed on the hydraulic sensor. A liquid tube of the first hydraulic sensor in the middle hydraulic sensor group is communicated with a liquid tube of the top hydraulic sensor through a liquid three-way tube. The bottom hydraulic sensor is fixedly installed on a hole bottom fixing device, and a liquid tube of the bottom hydraulic sensor is communicated with a liquid tube of the last hydraulic sensor in the middle hydraulic sensor group through a liquid three-way tube. The liquid differential pressure is used as the tested physical quantity, the liquid tubes of the sensors are sealed and isolated from the outside, and adaptive capacity is strong. The sealed liquid differential pressure layered settlement gauge is a testing structure with flexible connection in the vertical direction and avoids test influence caused by lateral bending.

Description

technical field [0001] The invention belongs to the technical field of land subsidence detection and relates to a settlement meter, in particular to a sealed liquid pressure difference layered settlement meter and its embedding and measuring methods. Background technique [0002] In embankment projects, land reclamation projects, road construction projects involving rock dumping, earth filling, or other projects with large additional stress, it is usually necessary to observe the compression settlement of layered soil. The initial settlement observation method is to anchor a circular settlement tube to the bedrock, put a magnetic ring around the settlement tube, and bury it at the observation level. When the ground soil sinks, the magnetic ring can sink synchronously with the soil, but the settling tube will not sink, and the magnetic ring will slide down the axial direction of the settling tube. By measuring the relative slip between the magnetic ring and the settling tube ...

AI Technical Summary

Problems solved by technology

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a sealed liquid differential pressure layered settlement meter and its embedding and measurement methods, which are used to solve the problem of the settlement meter in the prior art caused by lateral deformation. big error problem

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