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Optical fiber monitoring data processing method for wide-range scouring pit at end part of bank protection soft mattress body

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

Active Publication Date: 2021-07-09
TIANJIN RES INST FOR WATER TRANSPORT ENG M O T
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Optical fiber monitoring data processing method for wide-range scouring pit at end part of bank protection soft mattress body
  • Optical fiber monitoring data processing method for wide-range scouring pit at end part of bank protection soft mattress body
  • Optical fiber monitoring data processing method for wide-range scouring pit at end part of bank protection soft mattress body

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Experimental program
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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 wide-range scouring pit at the end part of a bank protection soft mattress, and the calculation formula of the scouring deformation form of the soft mattress is shown in the description: the final tensile elongation of the deformed soft mattress is shown in the description, wherein z is the final floating or sinking depth of the bank protection soft mattress, H is the tensile strength of the soft mattress polypropylene woven cloth within the bit width; x is the scour pit range (the middle of the bank protection soft body row head is 0); gamma is the weight per unit length of the soft mattress and the ballast (D-shaped interlocking block) above the soft mattress; rho is the water flow density; v is the water flow speed; and eta is a dimensionless adjustment parameter. The method can be used for monitoring the scouring deformation characteristics of the bank protection soft mattress in real time.

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 Applications(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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