Method for extracting deformation information of railway line and line area

An extraction method, a technology of the center line of the line, applied in the field of deformation information extraction of railway lines and areas along the line, can solve the problems of result accuracy optimization and achieve the effect of improving accuracy

Active Publication Date: 2020-02-18
铁科检测有限公司 +2
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Problems solved by technology

[0005] In order to solve the problems existing in GNSS technology and synthetic aperture radar interferometry in the deformation observation work of railway lines and areas along the line, especiall

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  • Method for extracting deformation information of railway line and line area
  • Method for extracting deformation information of railway line and line area
  • Method for extracting deformation information of railway line and line area

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[0040] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0041] A method for extracting deformation information of railway lines and areas along the lines provided by the present invention, referring to Figure 1-2 shown, including:

[0042] S101. Obtain the latitude and longitude coordinates P1 corresponding to each mileage of the center line position of the railway line;

[0043]S102. Obtain the GNSS continuous observation value G1 of the deformation reference point P2 position of the...

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Abstract

The invention discloses a method for extracting deformation information of a railway line and a line area. The method comprises the following steps: acquiring longitude and latitude coordinates P1 corresponding to each mileage at the position of a center line of the railway line, GNSS continuous observation values G1 of a plurality of deformation reference point positions equipped with corner reflectors in an observation area and deformation information S1 of surface target body microwave scattering points under a geographic coordinate system in the observation area; according to the deformation information S1 of the microwave scattering points, taking the GNSS continuous observation values G1 of the reference point positions as constraint conditions, and fitting to obtain a deformation curved surface S2; constructing a line area influence range according to the fitted deformation curved surface S2 and the longitude and latitude coordinates P1 corresponding to each mileage at the position of the center line of the railway line; and extracting line deformation S3 in the line area influence range in the surface deformation of the observation area. According to the method, the deformation information of the railway line and the line area is separated by combining the advantages of GNSS continuous observation and microwave scattering body deformation observation, and the surface deformation observation precision of the railway strip area is improved.

Description

technical field [0001] The invention relates to a surface deformation detection technology of a railway line and an area along the line, in particular to a method for extracting deformation information of a railway line and the area along the line. Background technique [0002] The surface deformation includes the vertical change of the ground and the change of the horizontal plane. The ground deformation along the railway is a kind of surface morphology change under the joint action of geological environmental factors and railway operation factors. Land subsidence is a geological disaster and an important cause of other disasters. Together with the horizontal displacement, it affects the railway line, causing changes in the shape of the line and affecting the safety of railway operation. Under the influence of geological factors and human factors, the surface deformation generally develops slowly and the deformation is irreversible. It is easy to be ignored in a short perio...

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Application Information

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IPC IPC(8): E01B35/00E01B35/12G01B15/06
CPCE01B35/00E01B35/12G01B15/06
Inventor 郭继亮姚京川熊昌盛胡在良刘伯奇冯海龙冯楠
Owner 铁科检测有限公司
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