Method for monitoring deformation of convergence meter by equivalent method

Abstract

The invention discloses a method for monitoring the deformation of a convergence meter by an equivalent method, which is used for equivalently replacing the convergence meter direct distance measuring method having the problems of high risk and high cost in overhead deformation monitoring operation, changes the overhead high-risk operation into the no-risk ground safe operation, reduces the engineering cost, and saves manpower, material resources and financial resources. The method realizes single point horizontal displacement and vertical displacement monitoring on a section by taking a point as a monitoring object, and can monitor the three-dimensional displacement of an arbitrary point with an inclined angle theta on the section thereof, can effectively avoid construction disturbance, and is particularly suitable for convergence deformation monitoring of geological surrounding rocks of a large tunnel, as well as the deformation monitoring work under a non overhead condition. The invention also recommends a simple and easy characteristic boundary forming method to ensure that the monitoring work is safe and convenient and has small investment, main auxiliary equipment to be added is just some common fine steel wires and a telescopic rod, and the independent operation of one person can be basically realized.

Description

technical field [0001] The invention belongs to a deformation monitoring method using a convergent gauge in the field of engineering measurement. Background technique [0002] The main method currently adopted for deformation monitoring using the convergent gauge is the direct distance measurement method, that is, the observer holds the convergent gauge, first hangs the steel ruler hook of the convergent gauge to a monitoring point, and then hangs the hook of the convergent gauge to another monitoring point On the point or on the reference point, observe the relative displacement or relative horizontal displacement or vertical displacement between two points. The essence of its work is to use the convergent meter to obtain the precise measurement distance and compare the measurement distance before and after. [0003] At present, most of them use electronic extensometers. There will be a prompt when the handle is tensed and the steel ruler of the extensometer reaches the rat...

AI Technical Summary

Problems solved by technology

[0007] (2) Only the relative horizontal displacement between two points can be monitored

[0009] (3) Vertical displacement monitoring problem

[0010] When the direct distance measurement method monitors the vertical displacement of a point, it is necessary to establish a fixed mark point at the place where the monitoring point is projected vertically on the ground, such as establishing a buried stone point. Since the position of the fixed mark point is unique, it is often susceptible to many construction factors. Periodic vertical displacement monitoring work cannot be carried out due to impact and damage

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