Navigation-power junction diaphragm wall leakage monitoring system and method based on BOTDA temperature technology

Abstract

The invention provides a navigation-power junction diaphragm wall leakage monitoring system and method based on a BOTDA temperature technology. The navigation-power junction diaphragm wall leakage monitoring system comprises a plurality of diaphragm walls, a heating temperature measurement optical fiber, a BOTDA optical susceptance instrument and an electricity control device. The heating temperature measurement optical fiber comprises a sensing optical fiber and a conductive waterproof wire. The power control device comprises a UPS uninterrupted mobile power supply, a transformer and a voltage stabilizer. According to the invention, the electrified heating temperature measurement optical fiber is adopted, and the optical fiber is vertically arranged in a diaphragm wall of the navigation-power junction in a U-shaped manner. By using the high sensitivity of the electrified heating temperature measurement optical fiber to temperature change, the system and the method greatly improve theseepage monitoring and analysis efficiency of the diaphragm wall, the possibility of missing detection in a traditional point type monitoring method is avoided, and the system and the method have theadvantages of being distributed, high in precision, accurate, reliable and the like.

Description

Technical field [0001] The invention relates to the technical field of optical fiber temperature technology and leakage monitoring of an anti-seepage wall, and in particular to a leakage monitoring system and method for an anti-seepage wall of an avionics hub based on BOTDA temperature technology. Background technique [0002] my country is a veritable major country in shipping, navigation, and power engineering. According to the "First National Water Conservancy Census Bulletin" of the Ministry of Water Resources, as of December 31, 2011, my country has 98,002 reservoirs and 46,758 hydropower stations, with a flow rate of 1 cubic meter per second. There are 268,476 water gates and above. The avionics hub project plays an important role in my country’s modernization and social and economic benefits. Among them, the wall quality and leakage monitoring of the cut-off wall are the most important, and its safety status is essential to ensure the operation of the avionics hub and the p...

AI Technical Summary

Problems solved by technology

With the improvement of various conditions such as modern construction, design, and mechanical application, the quality control of the cut-off wall has made great progress. However, with its operation and many environmental factors, problems such as cracks will inevitably occur. It is found that reasonable disposal and continuous operation with disease will inevitably lead to serious safety hazards and accident risks

[0003] In terms of the choice of monitoring methods, in the past, point-based measurement tools were basically used for monitoring, and the data information of discrete points was obtained. General monitoring is also limited by the cost and structural effects of monitoring equipment, so only a few can be selected. For the typical profile, the understanding of the overall information of the cutoff wall can only be processed by mathematical methods, which will miss important information to a certain extent, especially for the cracking of the cutoff wall concrete, local small spot leakage, etc. There is a large blind spot

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