Mining online pressure-measuring device based on optical fiber

Abstract

The invention discloses a mining online pressure-measuring device based on an optical fiber. The mining online pressure-measuring device comprises a ground gas monitoring host computer, an underground industry looped network, a plurality of base station exchangers, a fiber bragg grating demodulator and a plurality of fiber bragg grating osmometers, wherein the ground gas monitoring host computer and the underground industry looped network are connected in turn; the base station exchangers are connected with the underground industry looped network; the fiber bragg grating demodulator is connected with the base station exchangers; the fiber bragg grating osmometers are connected with the fiber bragg grating demodulator through transmission optical cables; the measured gas pressure signal is sent to the fiber bragg grating demodulator for demodulating by the fiber bragg grating osmometers, and then the signal is sent to the ground gas monitoring host computer through the base station exchangers and the underground industry looped network, and the gas pressure of the coal seam is real-time online monitored. The mining online pressure-measuring device based on the optical fiber has the advantages of de-energized state, safe nature, high stability, no other gas cross influence, being free from electromagnetic interference, high temperature resistance, corrosion resistance, small volume, high sensitivity and long-term stability and reliability; the data analysis, storage and display are performed on the ground gas monitoring host computer; the operation is simple and convenient; the response speed is high; the monitoring data can be derived; the support is supplied to the gas parameter determination.

Description

technical field [0001] The invention relates to an online pressure measuring device, in particular to an online mine pressure measuring device based on optical fiber. Background technique [0002] Coal seam gas pressure is the basic parameter for studying coal seam gas flow and gushing, and it is also one of the driving forces for coal and gas outburst. The size of coal seam gas pressure determines the amount of coal seam gas content, the level of gas flow dynamics and the gas potential of gas dynamic phenomena. Accurate measurement of gas pressure is of great significance to effectively and rationally formulate gas prevention and control measures in mines, predict and forecast the danger of coal and gas outburst, and reasonably formulate outburst prevention measures. [0003] The existing pressure measurement technology generally uses a gas pressure measurement kit to drill and seal the hole, installs a pressure gauge for manual reading, and then uploads the parameters to ...

AI Technical Summary

Problems solved by technology

[0003] The existing pressure measurement technology generally uses a gas pressure measurement kit to drill and seal the hole, installs a pressure gauge for manual reading, and then uploads the parameters to the coal mine system. The degree of system integration is not high, the measurement error is large, and the data update cycle is long. High labor costs and heavy business burden

Moreover, due to the low degree of real-time, parallel and automatic monitoring, the lack of long-distance monitoring technology, large errors in manual reading, and long data reading update cycle, the effect of gas control is not ideal

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