Fiber mine water inrush precursor information monitor

A monitoring instrument and optical fiber technology, applied in the field of optical fiber coal mine water inrush precursor information monitoring instrument, can solve the problems of unsatisfactory production safety, high cost, waste of manpower, etc., achieve quasi-distributed real-time monitoring, good waterproof performance, and improve measurement The effect of precision

Inactive Publication Date: 2010-04-21
SHANDONG UNIV
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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 continuou

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  • Fiber mine water inrush precursor information monitor
  • Fiber mine water inrush precursor information monitor
  • Fiber mine water inrush precursor information monitor

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] Such as figure 1 As shown in the structural diagram, the optical fiber coal mine water inrush precursor information monitor of the present invention includes a sensor array 1 , an optical fiber splitter 6 , an optical fiber grating demodulation device 7 and a computer 8 . Sensor array 1 is composed of fiber optic temperature sensor 2, fiber optic strain sensor 3, fiber optic displacement sensor 4 and fiber optic osmotic pressure sensor 5, which is sensitive to physical quantities such as temperature, strain, displacement and osmotic pressure, and plays a sensing role in the system. The optical fiber splitter 6 is responsible for splitting and combining optical signals in the system. The light source in the fiber grating demodulation device 7 emits infrared light, and the fiber grating demodulation device 7 is responsible for collecting the optic...

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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...

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Application Information

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IPC IPC(8): E21F17/18G01K11/32G01B11/16G01B11/02G01L11/02G01K11/3206
Inventor 李术才李树忱王静隋青美李利平李国莹刘斌
Owner SHANDONG UNIV
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