Optical fiber vibration real-time monitoring and alarming system for roadbed collapse

Abstract

The invention discloses an optical fiber vibration real-time monitoring and alarming system for roadbed collapse and belongs to the technical field of important infrastructure safety monitoring. The system is characterized in that a distributed type optical fiber vibration sensor is arranged in a roadbed in an S type, a distributed type optical fiber vibration system collects and positions vibration signals exerted on the distributed type optical fiber vibration sensor in real time, the vibration signals are processed through a roadbed collapse vibration signal recognizing system, the vibration signal which is generated by roadbed collapse is recognized, and recognized collapse disaster information is reported to a collapse disaster alarming final control center in real time through GSM / GPRS so that a collapse alarm can be given. The optical fiber vibration real-time monitoring and alarming system has the advantages that the distributed type optical fiber vibration testing system and the roadbed collapse vibration signal recognizing system are adopted for recognizing the vibration signal which is generated by the roadbed collapse in real time, the range of the collapse is determined according to the energy spectrum of the vibration signal and reported to the roadbed collapse disaster alarming final control center through the GSM / GPRS so that the alarm can be given for the collapse in real time, and the problem that an existing alarm for the roadbed collapse disaster is delayed is solved.

Description

technical field [0001] The invention belongs to the technical field of important infrastructure safety monitoring, and relates to a real-time monitoring and alarm system for roadbed collapse optical fiber vibration. Background technique [0002] my country's karst area exceeds 3 million square kilometers, accounting for nearly one-third of the country's land area. Karst soil cave (collapse) is an extremely serious natural disaster, which has caused great economic property damage and casualties. With the rapid development of the economy, my country's railway mileage is 90,000 kilometers (ranking the second in the world), of which the high-speed rail mileage is more than 7,000 kilometers (ranking the first in the world), and it has become an important high-tech export technology for my country. These railways inevitably cross karst areas, especially those in the Southwest. At present, the subsidence of railway subgrade in karst area is the main disaster form of railway line ...

AI Technical Summary

Problems solved by technology

At present, there are no relevant reports on the application of optical fiber vibration sensing technology to the monitoring of railway subgrade collapse

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