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New Austrian tunnel convergence displacement measurement method

A new Austrian method, displacement technology, applied in the direction of measuring devices, instruments, etc., can solve the problems of on-site construction conditions, long time and other problems, and achieve the effect of convenient operation, rational design of support system, and simple measurement equipment.

Pending Publication Date: 2021-05-07
CHINA RAILWAY 12TH BUREAU GRP +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, the absolute displacement takes a long time and is limited by the site construction conditions. Unless necessary, the absolute displacement measurement is generally not carried out

Method used

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  • New Austrian tunnel convergence displacement measurement method

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Embodiment Construction

[0027] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] Such as figure 1 As shown, the new Austrian method tunnel convergence displacement measurement method includes the following steps:

[0029] S1. Suspend the instrument and adjust the tension: use the JSS30A convergent gauge, estimate the approximate distance between two points before measuring, fix the steel tape ruler at the required length, that is, pull out the steel tape ruler, and fix the positioning hole on the Insert the steel ruler positioning pin, and screw the screw micrometer to the maximum reading position, set t...

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Abstract

The invention relates to the technical field of tunnel measurement, in particular to a new Austrian tunnel convergence displacement measurement method. The method comprises the following steps: suspending an instrument and adjusting tension; reading a reading number; calculating a convergence value; eliminating the scale error of the steel belt ruler; correcting the measured value temperature; and carrying out regression analysis on all data. The method can monitor the change of the surrounding rock deformation or stress state along with time, predict and forecast the change of the final displacement value and deformation rate, explore the spatial distribution rule of the surrounding rock deformation or stress state, and understand the characteristics of the surrounding rock stability, so as to reasonably design a support system and ensure the construction quality. The method is mainly applied to tunnel convergence displacement measurement.

Description

technical field [0001] The invention relates to the technical field of tunnel measurement, and more specifically, relates to a new Austrian method tunnel convergence displacement measurement method. Background technique [0002] The excavation of the tunnel will inevitably lead to the occurrence of displacement (including deformation) of the surrounding rock, and controlling the displacement of the surrounding rock of the tunnel within the allowable value is the key work for the safety management of the tunnel throughout its life. Surrounding rock displacement can be divided into absolute displacement and relative displacement. Absolute displacement refers to the actual movement value of the surrounding rock of the tunnel or a certain part of the roof, floor and side of the tunnel. Most of the prior art is to measure the absolute displacement. The measurement method is to set a base point far away from the actual measurement point, and then regularly use theodolite and leve...

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Application Information

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IPC IPC(8): G01B21/02G01B21/32
CPCG01B21/02G01B21/32
Inventor 赵香萍李建军李晓高志峰
Owner CHINA RAILWAY 12TH BUREAU GRP