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Data processing method of optical fiber monitoring of large-scale scour pits at the end of bank protection soft row body

A processing method, a technology of software layout, applied in the direction of complex mathematical operations, etc., can solve the problems that have not yet occurred, and achieve the effect of easy calculation

Active Publication Date: 2022-03-04
TIANJIN RES INST FOR WATER TRANSPORT ENG M O T
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at this stage, there is no specific data processing method suitable for the scouring and settlement optical fiber monitoring at the head end of the revetment software.

Method used

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  • Data processing method of optical fiber monitoring of large-scale scour pits at the end of bank protection soft row body
  • Data processing method of optical fiber monitoring of large-scale scour pits at the end of bank protection soft row body
  • Data processing method of optical fiber monitoring of large-scale scour pits at the end of bank protection soft row body

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Embodiment Construction

[0018] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0019] When the revetment soft row has two failure modes: large-scale scour pits and local scour pits at the end of the row under the action of water erosion, considering that the revetment soft row is a flexible knitted structure, regardless of the upward rollover of the soft row Still with the sinking of the scour pit, the arrangement will be stretched and deformed. Therefore, the following assumptions are made for the above two failure modes:

[0020] ①. Assume that the connection between the software arrangement and the ballast (D-type interlocking block) above it is in good condition, the two deform simultaneously, and the distribution of the ballast (D-type interlocking block) above the arrangement is uniform;

[0021] ②. Assuming that ...

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Abstract

The invention discloses an optical fiber monitoring data processing method for a large-scale scour pit at the end of a bank protection soft row body. The calculation formula for the scour deformation form of the soft bank row is: the final elongation after deformation of the soft bank row is: in the formula, z is the revetment The final floating or sinking depth of the soft row; H is the tensile strength of the polypropylene woven fabric of the soft row within the bit width; x is the scour pit range (the middle of the soft row head is 0); γ ​​is the soft row and the ballast above it (D-type chain block) weight per unit length; ρ is the water flow density; ν is the water flow velocity; η is a dimensionless adjustment parameter. The invention can be used for real-time monitoring of the scour deformation characteristics of the revetment soft row.

Description

technical field [0001] The invention belongs to the technical field of hydraulic monitoring, and in particular relates to a data processing method for optical fiber monitoring of a large-scale scour pit at the end of a bank protection soft row body. Background technique [0002] At present, optical fiber sensing technology is widely used in engineering fields, such as tunnels, bridges, high-speed rail, ports, docks, housing construction, etc. In the above-mentioned projects, the fiber optic sensor is usually fixed on a rigid structure. When the rigid structure undergoes a slight deformation, the pulse laser in the fiber sensor will undergo a Brillouin frequency shift change, and the frequency shift of the pulse laser changes linearly with the strain. The relationship perception changes in the physical properties of the monitored object. Different from the rigid structure, the soft revetment row is a flexible structure. Under the action of water flow, the soft revetment row ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/10
CPCG06F17/10E21F17/00G01D5/35374G01B11/18E02B3/122G01M5/0058G01M5/0091
Inventor 刘孟孟孙熙平李越松薛润泽
Owner TIANJIN RES INST FOR WATER TRANSPORT ENG M O T
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