Method for treating low oxygen of upper corner of stope face

Abstract

The invention relates to a method for treating low oxygen of an upper corner of a stope face, and belongs to the field of occupational safety and health of coal mines. The low-oxygen treatment methodcomprises the following steps that an oxygen concentration alarm is suspended below a top plate of the upper corner of the stope face to monitor oxygen concentration, and an oxygen storage tank controller is suspended on a roadway chamber near the upper corner or a side wall at a proper position; oxygen storage tanks are flatly placed on a bottom plate; when the oxygen concentration alarm detectsthat the oxygen concentration in air at the upper corner is lower than a critical point set by the alarm, a low-oxygen alarm signal is sent to the oxygen storage tank controller, and the oxygen storage tank controller sends a control instruction to an electromagnetic pressure reducing valve to automatically open the working oxygen storage tank; and high-pressure oxygen is subjected to pressure reduction adjustment and then jetted to a low-oxygen space of the upper corner of the stope face through an oxygen conveying pipeline system, after the oxygen concentration is recovered to a safety valueand lasts for a certain period of time, the oxygen concentration alarm releases alarming, and the working oxygen storage tank stops oxygen conveying. According to the method, the implementation process is monitored in real time, automatic control is achieved, operation is convenient, and the problem of low oxygen of the upper corner of the underground stope face can be rapidly and efficiently solved in time.

Description

technical field [0001] The invention relates to a method for treating low oxygen in the corner of a mining working face, which is particularly suitable for timely, fast and efficient treatment of the problem of low oxygen in the corner of a mining working face, and in particular to a method for treating low oxygen in the corner of a mining working face method. Background technique [0002] The oxygen content in normal air is 20.96%. One of the purposes of underground ventilation is to provide fresh air to the staff to ensure the breathing of the mine staff. When the oxygen concentration in the air drops below 17%, people will produce Adverse physiological reactions, such as dyspnea, fatigue and other uncomfortable reactions, may lead to weakened consciousness, loss of reason, and even death from suffocation. Therefore, the oxygen content in the air is 17% as a safety critical value. In order to protect the health of coal mine personnel and labor safety, provide suitable wor...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a low-oxygen treatment method for the upper corner of the mining working face, so as to solve the complex process and high cost of the existing low-oxygen treatment technologies such as drainage, air guidance, and pressure equalization, and occupy a large amount of space, which affects production and is effective. Problems such as slow speed and inaccurate coverage

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