Method and instrument for measuring underground displacement of integrated sensor based on underground displacement

Abstract

The invention discloses a method and an apparatus for measuring underground displacement based on an underground displacement measuring integrated sensor. The underground displacement measuring apparatus comprises 1 to m underground displacement measuring integrated sensor units which have identical structures and are connected in series in turn from the top down through a 485 bus, wherein the mth underground displacement measuring integrated sensor unit is connected with an underground displacement measuring centralized processor A through a 485 bus; and an entire measuring cluster consisting of integrated sensors is packaged inside a heat shrinkable rubber-plastic hose. The underground displacement measuring apparatus integrates a mutual-induction coil, a deviation-measuring integrated circuit, a communication bus, a sinusoidal signal generating circuit and a sinusoidal signal measuring circuit, etc. into a measuring integrated unit, and keeps a plurality of measuring integrated units in a certain distance to form the underground displacement measuring cluster; then, the underground displacement measuring centralized processor carries out centralized processing of the displacement of each underground position; therefore, the underground displacement measuring apparatus is formed to measure deformation from the ground to a deep position.

Description

technical field [0001] The invention relates to a displacement measurement device, in particular to an underground displacement measurement method and an instrument based on an integrated sensor for underground displacement measurement. Background technique [0002] Landslides, collapses, mudslides, landslides, ground subsidence and other geological disasters that endanger people's lives and property safety will cause deep underground displacement before and during the occurrence, and underground displacement will also occur during construction and water conservancy construction due to activities such as excavation and piling. The phenomenon of deep displacement, the former underground displacement is a sign before the disaster, and the latter will be an important performance of the environment and quality of construction and water conservancy construction. Therefore, monitoring the deep underground displacement is a necessary means to prevent disasters and ensure the qualit...

AI Technical Summary

Problems solved by technology

This kind of inclinometer must be manually operated by placing the measuring probe from top to bottom in the inclinometer tube to measure the inclination angle of the inclinometer tube. It cannot be monitored automatically in real time, and the measurement accuracy is related to the operator's technology.

In addition, when the inclinometer tube buried in the deep part of the soil undergoes S-shaped deformation or large curvature bending, the measuring probe cannot be lowered to complete the measurement

In addition, the inclinometer tube is a tube made of aluminum or engineering plastics, which has good anti-destructive strength. When the underground soil is soft, the actual displacement of the underground soil is greater than the displacement value corresponding to the inclination angle of the inclinometer tube. This does not accurately reflect the actual situation underground

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