Upper corner gas monitoring system

Abstract

The invention discloses an upper corner gas monitoring system which comprises a first sensor and a second sensor. The first sensor is mounted above an in-roadway coal face and can be connected with a coal mining equipment control system, the second sensor is mounted at an upper corner in a roadway, a wireless transceiving module and a charging module are arranged in each of the first sensor and the second senor, the first sensor is connected with a power supply through a power supply circuit and supplied with power directly through the power supply, and the second sensor is provided with energy through electric energy stored in a power supply module. After the structure is adopted, concentration of gas at the upper corner can be monitored; by continuous detection of concentration of methane gas at the upper corner of the coal face, ground personnel can grasp the methane gas concentration of the underground upper corner accurately and timely, the problems about detection of the gas accumulation concentration of the upper corner of the coal-mine underground working face and sensor movement at present are solved, and safety in normal daily production work is guaranteed.

Description

technical field [0001] The invention relates to a safety monitoring system for continuous detection of methane gas in the upper corner of an underground coal mining working face in a coal mine, in particular to an upper corner gas monitoring system, which belongs to the technical field of safety monitoring. Background technique [0002] Gas overrun in the corner of the coal mining face is a common safety hazard in the coal mining face; this hidden danger increases with the continuous development of the mine and the increase of mining intensity, and its impact on safe production is becoming more and more serious. If it is not handled properly, it will not only restrict the high production and high efficiency of the coal mining face, but also cause gas accidents; the reason for the accumulation of gas in the upper corner is that in the U-shaped ventilation system of the working face, the air flow pressure difference between the air inlet lane and the return air lane Under the ...

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Problems solved by technology

[0002] Gas overrun in the corner of the coal mining face is a common safety hazard in the coal mining face; this hidden danger increases with the continuous development of the mine and the increase of mining intensity, and its impact on safe production is becoming more and more serious. If it is not handled properly, it will not only restrict the high production and high efficiency of the coal mining face, but also cause gas accidents; the reason for the accumulation of gas in the upper corner is that in the U-shaped ventilation system of the working face, the air flow pressure difference between the air inlet lane and the return air lane Under the action, the wind flow on the working face is divided into two parts, one part flows directly from the working face, and the other part flows into the goaf from the middle and lower part of the working face, and then returns to the upper part and upper corner of the working face through the goaf, which will inevitably cause Gas accumulation in the upper corner; due to the special position of the upper corner, cable connection cannot be used when installing the sensor, so the power supply and signal return of the sensor are the main problems

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