Roadbed settlement monitoring device and method based on distributed optical fiber sensing monitoring technology
A distributed optical fiber and settlement monitoring technology, which is applied in the direction of measuring devices, infrastructure tests, on-site foundation soil surveys, etc., can solve the problems of heavy workload and susceptibility to external influences, and achieve a wide range of applications and accurate monitoring results Effect
Active Publication Date: 2020-05-12
CHINA UNIV OF GEOSCIENCES (WUHAN)
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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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[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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The invention provides a roadbed settlement monitoring device and method based on a distributed optical fiber sensing monitoring technology. The device comprises a plurality of box-type box bodies, afixed round smooth steel pipe, a first movable round smooth steel pipe, a second movable round smooth steel pipe, a first optical fiber and a second optical fiber. In a roadbed filling process, the first optical fiber and the second optical fiber are connected through the box-type box bodies to form a complete line by setting a reasonable distance, the strain condition on the whole distributed optical fiber line can be monitored by utilizing the characteristics of distribution, high precision and the like of the optical fibers, and meanwhile, the settlement value of each box-type box body, namely the settlement value of a roadbed, can be calculated. The complexity of a point type monitoring method in roadbed settlement monitoring is avoided, manual repeated position movement is not needed,a roadbed monitoring network can be formed by designing a reasonable optical fiber route, roadbed settlement deformation conditions in a large range can be obtained by means of the monitoring network, and the roadbed monitoring efficiency is greatly improved.
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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Login to View More IPC IPC(8): G01C5/00E02D1/08E02D33/00
CPCG01C5/00E02D1/08E02D33/00
Inventor 韦超群邓清禄苏维伟
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)