Multiple points settlement observation method and device therefor

Abstract

The invention discloses a method for checking artificial embankment body and foundation sink. The method comprises that embedding a deep sink detector and a shallow sink detector with hollow tubular structures in each checking layer along one normal line at object position in the artificial embankment body, and leading measuring device or measuring medium into a measuring channel formed by the shallow sink detector and a connecting tube, to measure the position change of the shallow sink detector and measure the height strike of the upper end of the connecting tube to find out the sink of each checking layer.

Description

Technical field [0001] The invention relates to a method for detecting the settlement of an artificial filling body and its foundation, a device used in the method, and a method for setting the device. This instrument is especially suitable for observing the layered settlement in artificial fillings and the deformation and post-construction settlement at a certain depth of the foundation at the same time along a vertical line, and can be installed without affecting the construction. . The artificial filling bodies of the present invention include roadbeds, dams and other structures artificially built with various fillers, such as railway or highway roadbeds, dams, and the like. Background technique [0002] During and after the construction of roadbeds, dams and other artificial filling bodies, the settlement of the filling bodies is often the primary indicator for controlling the construction speed and judging the status of their functions. [0003] At present, the following ins...

AI Technical Summary

Problems solved by technology

The above settlement observation methods have the following deficiencies: ① artificial leveling observation can only observe the settlement of the exposed surface, and cannot carry out the settlement observation of the layers of the filling body, the deep part of the foundation and the construction period; , although its accuracy is high, it is expensive, and has the same shortcomings as leveling; ③The magnetic ring subsidence instrument can measure the layered settlement, but this observation method can only be used for the filling body after the construction is completed. Observation, rather than measuring the deformation during the construction period; ④ The horizontal inclinometer can achieve the purpose of measuring the layered settlement of the filling body by specially arranging the measuring points, but it cannot measure the deformation during the construction period and the deformation of the deep foundation

The actual accuracy of the two observation methods described later is at the cm level. For example, in high-speed railways and other projects where the subgrade settlement control standard is only 1-2 cm, it often cannot meet the requirements of high measurement accuracy.

From the prior art, there is no method for observing the settlement of the filling body during construction and any instrument that can be used for similar observation

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