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Metro shield tunnel forming tunnel portal measurement method

A technology of subway shield tunneling and measurement methods, which is applied in the directions of measurement devices, surveying and navigation, instruments, etc., and can solve the problems of high labor intensity and use effect

Active Publication Date: 2015-04-01
URBAN RAIL TRANSIT ENG CO LTD OF CHINA RAILWAY FIRST GRP CO LTD +1
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  • Description
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  • Application Information

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Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a method for measuring the forming portal of a subway shield tunnel, which has simple steps, reasonable design, convenient implementation and good use effect, and can solve the problem of existing tunnel forming. The door measurement method has problems such as high labor intensity, can only roughly calculate the plane deviation of the formed door, and poor use effect

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  • Metro shield tunnel forming tunnel portal measurement method
  • Metro shield tunnel forming tunnel portal measurement method
  • Metro shield tunnel forming tunnel portal measurement method

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Embodiment Construction

[0053] Such as figure 2 A method for measuring the forming portal of a subway shield tunnel is shown, comprising the following steps:

[0054] Step 1, field data collection, the process is as follows:

[0055] Step 101, measuring point layout: such as image 3 As shown in , select M measuring points on the inner edge of the portal 1 to be measured, and number the M measuring points clockwise or counterclockwise; M is a positive integer and M≥10.

[0056] The portal 1 to be measured is an end-wall portal of the constructed subway shield tunnel, one side of the portal 1 to be measured is a subway shield tunnel and the other side is an underground structure, and the portal to be measured 1 is located at the boundary between the subway shield tunnel and the underground structure; the cross section of the door 1 to be measured is circular.

[0057] The underground structure is a subway station, an intermediate air shaft or an underground tunnel. Wherein, the underground excava...

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Abstract

The present invention discloses a metro shield tunnel forming tunnel portal measurement method, which comprises: 1, field data acquisition: 101, selecting measurement points, wherein M measurement points are selected on the inner edge of the tunnel portal to be measured according to requirements, and 102, measuring the measurement point position, wherein three-dimensional coordinates of each measurement point are measured, and measurement results are recorded; and 2, indoor data processing: 201, calculating the distance between each measurement point and the center line of the design path, and comparing the difference value, 202, calculating the end wall offset and the flatness, and 203, comparing the fitting tunnel portal center and the designed tunnel portal center, wherein the process comprises projecting, projection point grouping, circle fitting, fitting tunnel portal center point acquiring, tunnel portal center fitting precision calculating, and tunnel portal center offset acquiring. The metro shield tunnel forming tunnel portal measurement method has characteristics of simple step, reasonable design, easy achieving and good use result, and problems of high labor intensity, probable forming tunnel portal plane deviation calculating, and poor use effect of the existing tunnel forming tunnel portal measurement method can be solved with the metro shield tunnel forming tunnel portal measurement method of the present invention.

Description

technical field [0001] The invention belongs to the technical field of subway shield tunnel construction, and in particular relates to a method for measuring a forming portal of a subway shield tunnel. Background technique [0002] The outer diameter of the gate of the subway shield tunnel is generally 6.7m. When the shield machine is launched, in order to ensure the accurate positioning of the shield machine and the smooth start, and when the shield tunnel is penetrated, in order to ensure the accurate penetration of the shield tunnel, it is necessary to The actual position measurement of the formed subway shield tunnel door has been done. Since the forming gate of the subway shield tunnel is relatively high, it is not easy for people to reach it. The conventional measurement method is the distance method. The measurement process is as follows: [0003] first step, such as figure 1 As shown, according to the method of laying out an elevation section every 50cm, the elevat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C7/06
CPCG01C7/06
Inventor 徐岩军樊华真杨永强王鑫安彦荣霍小亚田黎明秦艳艳
Owner URBAN RAIL TRANSIT ENG CO LTD OF CHINA RAILWAY FIRST GRP CO LTD
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