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Subgrade settlement monitoring device and method based on distributed optical fiber sensing monitoring technology

A distributed optical fiber and settlement monitoring technology, which is used in measurement devices, infrastructure tests, and on-site foundation soil surveys. Effect

Active Publication Date: 2021-09-24
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional monitoring method is mature in technology and simple in operation, but it is also easily affected by the outside world, and the traditional monitoring method has a large workload and can only monitor the settlement deformation of a certain point or position

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  • Subgrade settlement monitoring device and method based on distributed optical fiber sensing monitoring technology
  • Subgrade settlement monitoring device and method based on distributed optical fiber sensing monitoring technology
  • Subgrade settlement monitoring device and method based on distributed optical fiber sensing monitoring technology

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Embodiment Construction

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0028] Please refer to Figure 1 to Figure 4 , the present embodiment provides a subgrade settlement monitoring device based on distributed optical fiber sensing monitoring technology, including several box-type boxes 1 and fixed smooth steel pipes 2 and first movable smooth steel pipes in the box-type box 1. 31. The second movable smooth steel pipe 32, the first optical fiber 41, and the second optical fiber 42. The box-type box 1 is a double-layer high-hardness structure, and the double-layer structure is filled with constant temperature and heat-insulating materials. The box-type box 1 A first steel pipe hole 51 and a second steel pipe hole 52 are respectively provided at the center of the top surface and the bottom surface, first guide rails 61 are p...

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Abstract

The present invention provides a subgrade settlement monitoring device and method based on distributed optical fiber sensing monitoring technology, including several box-type boxes, fixed smooth steel pipes, first movable smooth steel pipes, second movable smooth steel pipes and first optical fibers, The second optical fiber, in the process of roadbed filling, set a reasonable distance to connect the first optical fiber and the second optical fiber through each box-type box to form a complete line, and use the distributed and high-precision characteristics of optical fibers to monitor the entire line. The strain conditions on the distributed optical fiber lines can also be calculated at the same time as the settlement value of each box-type box, that is, the settlement value of the roadbed. The present invention avoids the complexity of the mid-point monitoring method for subgrade settlement monitoring, and does not need to manually move the position again and again. By designing a reasonable optical fiber route, a subgrade monitoring network can be formed, and a wide range of subgrade settlement can be obtained by relying on the monitoring network. deformation, greatly improving the efficiency of roadbed monitoring.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering monitoring and optical fiber application, in particular to a subgrade settlement monitoring device and method based on distributed optical fiber sensing monitoring technology. Background technique [0002] With the rapid development of the national economy, the construction of roads and railways is an indispensable condition for promoting economic development. The growth of various roads reflects the level of transportation development of a country and region, and also presents the overall state of a country's economy. . Highways and railways play a connecting role between large cities and large and medium-sized cities, and play a communication role between coastal port cities and inland provincial capital cities. In the process of road construction, the subsidence and deformation of the roadbed inevitably become the main consideration. If subgrade settlement is not predicted or ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C5/00E02D1/08E02D33/00
CPCE02D1/08E02D33/00G01C5/00
Inventor 韦超群邓清禄苏维伟
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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