Underground ventilation safety comprehensive early warning method based on WebGIS platform

Abstract

The invention provides an underground ventilation safety comprehensive early warning method based on a WebGIS platform. The underground ventilation safety comprehensive early warning method comprises the steps that a gate way, an upper roadway and a lower roadway are correspondingly cut on an ore body, the upper roadway is located between the gate way and the lower roadway, the upper roadway serves as an upper-layer ore stoping transportation channel, the gate way serves as a primary bottom-descending stoping middle-layer ore transportation channel, and the lower roadway serves as a secondary bottom-descending stoping lower-layer ore transportation channel; and ore pillars are formed in the processes of upper-layer ore stoping, primary bottom-descending stoping middle-layer ore and secondary bottom-descending stoping lower-layer ore, then stoping is carried out on the ore pillars, the stoping process is repeated in sequence till stoping of the whole ore body is completed, discontinuous ore bodies in the vertical plane and the plane and ore bodies encountering barren rocks in the same layer are exploited, the upper and lower layer ore bodies are prevented from being discarded, the mining rate is improved, and operation is easy and convenient.

Description

technical field [0001] The invention belongs to the technical field of underground ventilation, and relates to a comprehensive early warning method for underground ventilation safety based on a WebGIS platform. Background technique [0002] The underground mining of phosphate mines is mainly based on gently inclined ore bodies. On the one hand, with the extension of the mine production shaft, the working face advances, the wind flow route is too long, the ventilation resistance is large, and the air intake to the working face is insufficient; on the other hand, most of the The mine adopts large-scale mechanized trackless transportation, the vehicle transportation is frequent, and it is difficult to adjust the segmental air volume. Therefore, when deep mining is carried out in most phosphate mines, additional auxiliary fans are often used to guide the air flow into the working face. As the number of working sections increases, the adjustment effect is not obvious. In additio...

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Problems solved by technology

[0002] The underground mining of phosphate mines is mainly based on gently inclined ore bodies. On the one hand, with the extension of the mine production shaft, the working face advances, the wind flow route is too long, the ventilation resistance is large, and the air intake to the working face is insufficient; on the other hand, most of the The mine adopts large-scale mechanized trackless transportation, the vehicle transportation is frequent, and it is difficult to adjust the segmental air volume

Therefore, when deep mining is carried out in most phosphate mines, auxiliary fans are often used to guide the air flow into the working face. As the number of working sections increases, the adjustment effect is not obvious

In addition, with the further mining of the mine, the existing ventilation network is not compatible with the mine production, and the ventilation equipment of the mine has not changed much with the production of the mine, resulting in low efficiency of the fan device, and the incompatibility between the ventilation capacity and the production capacity of the mine. And other issues

Even professional ventilation safety personnel cannot rationally optimize the ventilation system in combination with mine underground operations, which often results in complicated ventilation networks and large ventilation power. In order to improve the economic benefits of mines and ensure safe underground operations, phosphor mine It is of great research significance to optimize the ventilation system

[0003] In the field of mine ventilation, intelligent ventilation must rely on a large amount of ventilation data support. However, at present, the acquisition of ventilation system parameters relies on the PLC control system, which is difficult to obtain. It mainly relies on manual measurement and a small amount of automatic monitoring equipment. Because the underground ventilation system is very complex , and is in the process of dynamic changes all the time, it is difficult to obtain detailed ventilation parameters in real time and use them to adjust the ventilation system to form a closed-loop feedback system

[0004] Due to the complexity of the underground ventilation system, most mines have not formed a closed-loop control system that adjusts the ventilation system based on real-time feedback of the underground air quality status, and often adopt the method of operating the ventilation system at full power to ensure the safety of underground ventilation, while the full power of the underground ventilation system The power ventilation capacity is usually designed according to the full-load production state with a certain leeway. Generally, the underground ventilation capacity does not need to reach full-time and full-power operation, so in the actual production process, full-time and full-power operation The ventilation system will cause a lot of energy waste, which not only increases the production cost but also is unnecessary

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