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A kind of intelligent control pyrite mine underground working face so 2 method of concentration

A technology of intelligent control and working face, which is applied in mine/tunnel ventilation, mining equipment, earthwork drilling and mining, etc. It can solve the problems that concentration monitoring and regulation cannot be carried out synchronously and in real time, cannot be successfully warned in real time, and spontaneous combustion accidents occur, etc., to achieve Solve the effects of untimely monitoring and regulation, high degree of automation, and accurate monitoring

Active Publication Date: 2022-01-18
FUZHOU UNIV
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Problems solved by technology

[0005] In summary, the current working face control SO 2 The concentration method has the following defects: (1) SO 2 The monitoring and regulation of the concentration cannot be carried out simultaneously and in real time; (2) When the pyrite oxidation reaction heat release in the working face may turn into a spontaneous combustion accident, the current technology cannot successfully warn in real time, and it will lead to a spontaneous combustion accident

Method used

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  • A kind of intelligent control pyrite mine underground working face so <sub>2</sub> method of concentration
  • A kind of intelligent control pyrite mine underground working face so <sub>2</sub> method of concentration
  • A kind of intelligent control pyrite mine underground working face so <sub>2</sub> method of concentration

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Embodiment 1

[0035]The implementation steps of this example are as follows: (1) Preparatory work for mining face monitoring; (2) Selection and layout of measuring points on the working face; (3) Determination of safety threshold; (4) Monitoring equipment installation and monitoring system debugging; (5) The implementation of real-time control of the working face; (6) The mining of the working face is completed, and the monitoring equipment is recovered; the specific operation of the above six steps is as follows:

[0036] (1) Preparatory work for mining face monitoring

[0037] The main preparatory work includes: mastering the ventilation situation of the working face, the pyrite grade and spontaneous combustion of the working face, and the safety situation of the working face.

[0038] (2) Selection and arrangement of measuring points on the working face

[0039] According to the safety situation of the working face, the measuring point must first ensure the construction safety, and the ...

Embodiment 2

[0055] A pyrite mine adopts underground mining, and the mining method is the upward horizontal layered filling mining method. The mine has repeatedly occurred stope SO 2 Poisoning accidents and pyrite spontaneous combustion accidents have caused damage to mine production, so the SO 2 Concentration is intelligently controlled using this technology. Specific steps are as follows:

[0056] (1) Preparatory work for mining face monitoring

[0057] The working face to be tested is the stope of a pyrite 2# ore body. The upward horizontal layered filling mining method is adopted. The stope is arranged along the ore body. The mining layer height is 3-5m, and the maximum exposed area of ​​the stope is designed 1000m2, the ore is high-grade pyrite, with an average grade of 30%, and the sulfur grade of some raw ore is as high as 41%. The roof of the stope is stable, and the return air roadway of the stope is stable, so that equipment can be installed safely without support. Ore with a ...

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Abstract

The present invention proposes a kind of intelligent control pyrite mine underground working face SO 2 Concentration method, the method is by establishing a measuring station at the underground working face; the measuring station includes a sampling ore pile formed by stacking high-grade pyrite in the working face, and also includes a controller, SO 2 Concentration sensor, temperature sensor; The controller passes SO 2 The concentration sensor collects the station position SO 2 Concentration data, temperature data at the location of the station are collected by the temperature sensor, and the ventilation fan and the accident alarm at the working face are controlled according to the monitoring data. 2 concentration and temperature, it is safe for SO 2 concentration is controlled.

Description

technical field [0001] The invention relates to the field of mining technology, in particular to an intelligent control SO 2 method of concentration. Background technique [0002] The main component of pyrite is FeS 2 , during the mining process, the contact area between the pyrite and the air in the working face increases, and an oxidation reaction occurs to generate SO 2 . SO 2 It is a colorless, toxic gas with a pungent smell. The national health standard value of the People's Republic of China stipulates that when the concentration of sulfur dioxide gas in the air is greater than or equal to 2ppm, it will pose a hazard to the health of people in it. Moreover, the oxidation reaction of pyrite is an exothermic reaction. If the released heat cannot be effectively dissipated, the temperature of the mining face or the ore pile will increase, and the increase in temperature will cause the reaction to intensify. Once the temperature rises to the ignition point, It will cau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F17/18E21F1/00
CPCE21F17/18E21F1/006
Inventor 张文慧李兴尚胡维喜
Owner FUZHOU UNIV
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