Fiber mine water inrush precursor information monitor

Abstract

The invention provides a fiber mine water inrush precursor information monitor comprising a sensor array, a fiber splitter, a fiber grating demodulation device and a computer. The sensor array comprises a fiber temperature sensor, a fiber strain sensor, a fiber displacement sensor and a fiber osmotic pressure sensor which are all fiber grating sensors, and temperature, strain, displacement, osmotic pressure, and other physical quantities collected by the fiber grating sensors are sent to the fiber grating demodulation device by the fiber splitter through optical fibers; and the fiber grating demodulation device converts collected light wavelength signals into electric signals and finally sends the electric signals to the computer, and the computer analyzes and monitors on-site information by a software system in real time.

Description

technical field [0001] The invention relates to an optical fiber coal mine water inrush precursor information monitor, which belongs to the fields of optical fiber grating sensing, geotechnical engineering monitoring and instrumentation. Background technique [0002] my country's coal industry still has many problems such as low industrial intensification, backward productivity, and severe safety conditions. Major accidents such as gas and coal dust explosions and coal mine water inrush occur frequently, causing many disasters and huge economic losses. Among them, mine water inrush accidents are second only to coal mine gas accidents in terms of the number of deaths and the number of occurrences, but the economic losses caused have always ranked first in various coal mine disasters. As mine mining conditions become more complex, mine water inrush accidents remain high. In the seven years from 2000 to 2006 alone, there were 435 serious and extremely large mine water inrush ac...

AI Technical Summary

Problems solved by technology

[0003] Although a lot of research has been done on the theory and method of mine water inrush prediction at home and abroad, most of the coal mine waterproofing adopts the method of "exploring first when in doubt, exploring first and then digging", or even digging every time, which is a waste of material resources. , and a waste of manpower; each detection needs to carry instruments down to the mine, which cannot realize continuous real-time monitoring, and cannot guarantee the personal safety of the detection personnel; at present, my country's coal mine detection devices are based on electrical signal detection, which has the disadvantages of short life, waterproof and explosion-proof Poor performance, complex installation and maintenance, and high cost, and in some areas, the existing technology cannot measure and cannot meet the needs of safe production

Images