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All-fiber coal mine safety monitoring system

A technology of coal mine safety and monitoring system, applied in mining equipment, mining equipment, earthwork drilling and other directions, can solve the problems of non-explosion-proof detection equipment and low degree of automation, reduce potential risk factors, increase measurement function, precision and accuracy high degree of effect

Inactive Publication Date: 2015-02-11
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

[0005] The technology of the invention solves the problem: to overcome the shortcomings of the existing coal mine underground monitoring, such as low degree of automation, detection equipment and non-explosion-proof nature, and adopt all-fiber optical sensing technology to realize all-round real-time safety monitoring of coal mine underground conditions

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  • All-fiber coal mine safety monitoring system
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  • All-fiber coal mine safety monitoring system

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Embodiment Construction

[0028] Such as figure 1 As shown, the system of the present invention is located underground, including a broadband light source 1, an optical fiber circulator 2, a multi-channel optical switch array 3, an optical fiber sensing module 4, and a signal acquisition and processing module 5; the optical fiber sensing module 4 includes a grating spontaneous ignition monitoring sensor 41. Grating reinforced ground beam sensor 42, grating mine earthquake sensor 43; grating spontaneous combustion monitoring sensor 41 monitors the temperature change rate of the coal seam in the goaf in real time, and timely forecasts coal mine spontaneous combustion; the grating reinforced ground beam sensor 42 detects the strain of the goaf To monitor the stratum health status in the coal mining area; the grating mine vibration sensor 43 realizes the monitoring of the stratum vibration in the coal mining area by detecting the micro-vibration of the stratum in the goaf; The switch array 3 is distributed...

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Abstract

The invention discloses an all-fiber coal mine safety monitoring system which comprises a broadband light source, an optical fiber circulator, a multi-way optical switch array, an optical fiber sensing module and a signal acquisition and processing module, wherein the optical fiber sensing module comprises an optical grating spontaneous combustion monitoring sensor, an optical grating reinforcement ground bean sensor and an optical grating mine earthquake sensor. According to the system, comprehensive information of underground coal mine temperature, strain, mine earthquake and the like can be monitored in real time by the broadband light source; rich database information is provided for comprehensive evaluation of health conditions of underground coal mine by an all-fiber multi-sensor fusion mode; the system is suitable for meeting the monitoring requirements of a severe environment.

Description

technical field [0001] The invention is an all-optical coal mine underground safety monitoring system, which is used for real-time monitoring of underground temperature, strain and mine earthquake information. Background technique [0002] Mine safety monitoring has an important impact on coal mine safety production. With the continuous increase of mining depth and mining intensity, the ventilation system of production mines is becoming more and more complex. Affected by the goaf and the original small coal mines around, the mine has a large amount of air leakage and there are serious safety hazards. It is of great significance to carry out comprehensive safety monitoring on the goaf. [0003] Shenhua Group Co., Ltd. proposed a coal mine goaf temperature monitoring system (application number: 201320477685.X). Through the guide installation device, the mining movement of the hydraulic support is synchronized with the laying of the goaf sensing optical fiber, and the tempera...

Claims

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Application Information

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IPC IPC(8): E21F17/18
CPCE21F17/18
Inventor 董凤忠李俊孙苗汤玉泉杨爽
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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