Coal mine working face rib fall monitoring system based on fiber grating and three dimensional laser scanning

A three-dimensional laser and fiber grating technology, which is applied in the measurement, measurement force, and measurement device of the change force of the optical properties of the material when it is stressed, can solve the problems of poor anti-electromagnetic interference, short service life, and external environmental influences. and other issues to achieve the effect of avoiding casualties, realizing underground disasters and ensuring safe operation

Inactive Publication Date: 2017-11-21
CHINA UNIV OF MINING & TECH
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Problems solved by technology

[0003] At present, the safety monitoring devices commonly used in coal mines in my country have poor anti-electromagnetic interference capabilities; at the same time, due to the harsh environment and poor lighting conditions in the mines, human reading err

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  • Coal mine working face rib fall monitoring system based on fiber grating and three dimensional laser scanning
  • Coal mine working face rib fall monitoring system based on fiber grating and three dimensional laser scanning
  • Coal mine working face rib fall monitoring system based on fiber grating and three dimensional laser scanning

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Embodiment 1

[0037] Embodiment 1: the monitoring system of coal mine working surface based on fiber grating and three-dimensional laser scanning, including ground data processing system (1), downhole data transmission system (2), downhole data acquisition system (3); described ground data The processing system (1) includes a main control computer and an optical fiber grating demodulator installed in the main control computer room on the ground, wherein the optical fiber grating demodulator (5) is connected with the main control computer (4) to realize the conversion of data signals and transmission, the main control computer (4) is installed with downhole data processing and modeling software, which can realize the processing of data such as the working resistance of the hydraulic support of the downhole working face, the sinking amount of the roof, and the temperature, and can simultaneously scan the point cloud data according to the three-dimensional laser Realize three-dimensional imagin...

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Abstract

A coal mine working face rib fall monitoring system based on fiber grating and three dimensional laser scanning belongs to a coal mine working face rib fall identification monitoring system; a ground data processing system of the identification monitoring system is connected with a downhole data transmission system through a transmission fiber; the data transmission system is connected with a downhole data acquisition system through a fiber pigtail; the working face three dimensional coordinate data and angle values are obtained through three dimensional laser scanning; fiber grating sensors arranged in the downhole can monitor the working face roof pressure, the hydraulic support working resistance, the roof sinkage and the temperature information; the advantages are that the monitoring system uses the features that the three dimensional laser scanning process is fast in measurement, strong in penetrability and visualization, and needs no contact; the fiber grating technology is strong in anti-electromagnetic interference ability under downhole severe environment, thus providing accurate and timely monitoring data for the ground, returning processed data to the underground, preventing downhole calamities, and ensuring the downhole production safety and personnel personal safety.

Description

technical field [0001] The invention relates to a coal mine working face side recognition monitoring system, in particular to a coal mine working face side side monitoring system based on optical fiber grating and three-dimensional laser scanning. Background technique [0002] In the process of mine production, due to improper excavation or support, large-scale collapse of the coal wall of the working face will cause injury accidents. When an accident is about to happen, if no corresponding measures are taken in advance, it will directly affect the personal safety of coal miners and the smooth progress of mine production operations. Therefore, in order to prevent such accidents from causing personal injury to underground workers, it is necessary to monitor the coal wall of the working face in time to understand the stability of the coal wall, thereby avoiding such accidents and ensuring the personal and property safety of underground workers. [0003] At present, the safety...

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Application Information

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IPC IPC(8): G01B11/00G01K11/32G01L1/24G01K11/3206
CPCG01B11/00G01K11/3206G01L1/246
Inventor 方新秋宁耀圣梁敏富吴刚卢海洋冯裕堂
Owner CHINA UNIV OF MINING & TECH
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