An early warning system for open-pit coal spontaneous combustion

Abstract

The invention discloses an open-air coal spontaneous combustion early warning system, which comprises a probe rod, on which several temperature sensors and gas detectors are arranged; a signal transmitter is arranged on the top of the probe rod, and the signal transmitter is respectively connected to the temperature sensor and the gas detector through wires. The gas detector is connected; the middle part of the probe rod is provided with a support plate, and the support plate is provided with a weather monitor. The weather monitor is connected to the controller through a wire, and the other end of the controller is connected to the signal transmitter; the signal transmitter passes through the wireless module. It is connected with the signal receiver, and the signal receiver is connected with the computer through wires. The system uses solar power for solar photovoltaic power generation without mechanical transmission parts, and is easy to operate and maintain.

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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