Tunnel secondary lining thickness precise detection method based on function curve fitting

A technology of curve fitting and detection method, applied in the direction of measuring devices, instruments, etc., can solve problems such as insufficient thickness of the secondary lining of the tunnel, offset of the secondary lining, and threats to the safety of the tunnel, so as to ensure durability, improve efficiency, and accelerate The effect of construction progress

Active Publication Date: 2019-01-15
SHANDONG UNIV
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Problems solved by technology

In the process of tunnel construction, due to the deviation of the secondary lining trolley from the tunnel center line or other construction factors, the secondary lining of the tunnel often causes problems such as insufficient thickness of the secondary lining or offset of the secondary lining, which greatly threatens the safety of the tunnel.

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  • Tunnel secondary lining thickness precise detection method based on function curve fitting

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[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0029] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinatio...

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Abstract

The invention discloses a tunnel secondary lining thickness precise detection method based on function curve fitting. The method comprises the steps of establishing a standard function curve of tunnelsecondary lining, and determining a designed tri-axis standard coordinate value of any point on a secondary lining outer contour curve; collecting a tri-axis coordinate value of a reference point; onthe basis that the tri-axis coordinate value of the reference point is known, measuring the tri-axis coordinate values of tunnel secondary lining detection points; obtaining Y-axis and Z-axis designed coordinate values of the corresponding detection points according to an X-axis coordinate value of each detection point, comparing the Y-axis and Z-axis designed coordinate values with practically measured Z-axis and Y-axis coordinate values, computing offset difference values of the corresponding detection points, and obtaining a tunnel secondary lining thickness difference value and a tunnel secondary lining offset difference value. According to the method, on the basis of the function curve fitting, precision of the tunnel secondary lining thickness difference value and the tunnel secondary lining offset difference value is improved.

Description

technical field [0001] The invention relates to a method for accurately detecting the thickness of the second lining of a tunnel based on function curve fitting. Background technique [0002] Our country is in a period of great development of infrastructure construction. No matter in the construction of industrial and civil construction, or in the construction of bridges, tunnels, roads, etc., it is necessary to inspect and accept the completed projects to ensure the quality and safety of the projects. With the vigorous development of my country's high-speed railway, tunnels have gradually become the focus of construction. In the tunnel construction process, in order to ensure the long-term safety of the tunnel, the quality of the secondary lining construction has become a decisive factor. In the process of tunnel construction, due to the deviation of the secondary lining trolley from the tunnel centerline or other construction factors, the secondary lining of the tunnel of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/08
CPCG01B21/08
Inventor 李利平范宏运刘洪亮林春金杨为民金岩秦承帅丁若松
Owner SHANDONG UNIV
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