Spontaneous combustion early-warning system for open-air coal

Abstract

The invention discloses a spontaneous combustion early-warning system for open-air coal. The spontaneous combustion early-warning system comprises a probing rod, and a plurality of temperature sensorsand a gas detector are arranged on the probing rod. A signal projector is arranged at the top of the probing rod and connected with the temperature sensors and the gas detector through conductors. Asupporting plate is arranged in the middle of the probing rod, and a weather monitor is arranged on the supporting plate and connected with a controller through a conductor. The other end of the controller is connected with the signal projector, and the signal projector is connected with a signal receiver through a wireless module. The signal receiver is connected with a computer through a conductor. According to the spontaneous combustion early-warning system, a solar power supply solar photovoltaic power generation non-mechanical-transmission component is used, and operation and maintenanceare easy.

Description

technical field [0001] The invention relates to the technical field of coal natural early warning, in particular to an open coal spontaneous combustion early warning system. Background technique [0002] Coal, as the main source of energy in our country, plays a vital role in the process of national economic development. Spontaneous combustion of coal is one of the main disasters in the process of coal mining. In Xinjiang, Ningxia and other places in my country, the loss of coal due to spontaneous combustion of coal exceeds 10 million tons every year. The spontaneous combustion of coal not only brings a huge loss of energy, but also produces a large amount of SO in the process of spontaneous combustion of coal 2 、H 2 S, CO and CO 2 And other harmful gases have also caused serious pollution to the environment, and at the same time caused the death of vegetation, desertification of the soil, and coal spontaneous combustion is also a problem that needs to be solved urgently ...

AI Technical Summary

Problems solved by technology

[0004] Mining economic issues should be considered in open-pit coal mining. According to the determination of the economically reasonable stripping ratio, there is inevitably the problem of side coal residues. The long-term exposure of the side coal residues and the coal body of the working face to the air will intensify the oxidation of the coal body. The integrity is damaged due to the mining equipment, which increases the coal fissure and the effective contact area with the air, which further accelerates its oxidation rate, and a large amount of accumulated heat is difficult to dissipate due to the special terrain where the coal is located, resulting in spontaneous combustion

[0005] At present, the treatment of fires in open-pit mines mainly lies in the "treatment" that refers to taking corresponding measures after the coal exposed to the air spontaneously ignites, such as watering, grouting, etc., which can achieve better results to a certain extent, but Once the firefighters do not rescue the coal in time, it will cause a huge loss of coal resources. The spontaneous combustion of the coal will cause the slope stress to be redistributed, and the weak surface will increase and affect the stability of the open-pit mine slope. It will increase the difficulty of mine coal mining in the later period, especially the harmful gas generated by fire, high-temperature smoke and dust will cause air pollution in the open-pit mine, and even affect the health and life of the staff. The resulting mining costs will increase sharply. Therefore, the research on early warning and alarm of fire in open pit mines and the development of early warning and alarm systems are particularly important.

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