Research on a Spontaneous Combustion Prevention System in Deep Mine: A Case Study of Dongtan Coal Mine

Kong, Biao; Li, Jiahui; Lu, Wei; Fu, Wei; Song, Haizhou; Liu, Jifan

doi:10.1080/00102202.2022.2126938

Cited by 10 publications

(3 citation statements)

References 35 publications

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“…Foam fire prevention technology, an innovative coal fire prevention and control strategy, has demonstrated excellent effectiveness in preventing and controlling CSC [37][38][39]. The technology is based on a unique foam generation system that produces large volumes of inert foam with high stability through a precise mix of water, foam agents, and, in some cases, inert gas, which is quickly mixed in a specific facility and treated by a foaming unit.…”

Section: Foam Materialsmentioning

confidence: 99%

Exploration and Frontier of Coal Spontaneous Combustion Fire Prevention Materials

Han,

Niu,

Zhu

et al. 2024

Processes

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Mine fires have always been one of the disasters that restrict coal mining in China and endanger the life safety of underground workers. The research and development of new fire prevention materials are undoubtedly important to ensure the safe and efficient production of modern mines. At present, the main inhibiting materials used are grout material, inert gas, retarding agent, foam, gel, and so on. In order to explore the current situation of coal spontaneous combustion (CSC) fire prevention, the existing fire prevention materials were reviewed and prospected from three aspects: physical, chemical, and physicochemical inhibition. The results show that, at present, most of the methods of physicochemical inhibition are used to inhibit CSC. Antioxidants have become popular chemical inhibitors in recent years. In terms of physical inhibition, emerging biomass-based green materials, including foams, gels, and gel foams, are used to inhibit CSC. In addition, CSC fire-fighting materials also have shortcomings, including incomplete research on the mechanism of material action, poor stability of inhibitory properties, low efficiency, and economic and environmental protection to be improved. The future research direction of fire-fighting materials will be based on theoretical experiments and numerical simulation to study the mechanism and characteristics of CSC and develop new directional suppression materials with physicochemical synergies. These findings have extremely important implications for improving materials designed to prevent CSC.

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Section: Foam Materialsmentioning

confidence: 99%

Exploration and Frontier of Coal Spontaneous Combustion Fire Prevention Materials

Han,

Niu,

Zhu

et al. 2024

Processes

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“…Therefore, studying the combustion of multiple combustibles and the diffusion of toxic and hazardous gases in different locations underground will effectively manage mine fires [5,6]. In this paper, based on a mine, we will establish a threedimensional visualization ventilation model of this mine through Ventsim software and conduct fire simulation [7,8], compare the fire events caused by different locations and different fuels in the underground, analyze the change pattern and influence range of temperature, CO concentration and visibility at different times and locations under different working conditions, and provide the future treatment of similar events in the underground coal mines theoretical basis, and provide an important realistic reference for effective personnel escape and rapid development of emergency rescue strategies underground [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Research on typical fire impact and emergency escape planning in Yushuling Coal Mine

Wang

2024

Applied Mathematics and Nonlinear Sciences

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Mine fire is a very dangerous underground disaster. In order to better study the situation and influence range of mine fire, this paper uses Ventsim to establish a three-dimensional visual ventilation model of Yushuling coal mine. The fire simulation of coal mining face and central substation is carried out by simulation method to study the change law of CO concentration, visibility and temperature in different places. The results show that the CO concentration and visibility change greatly in the downstream of the fire source point when a fire occurs in the coal face; As for the temperature, the temperature at the fire source varies greatly, and the temperature below the inclined air shaft hardly changes; All of them show a decreasing trend with the increase of the distance from the fire source; In case of fire in central substation, there are great changes in all substances in the roadway before and after the air door is opened and closed; After the air door is closed, the CO concentration drops sharply, the change rate at the end of the fire is reduced, the end time is advanced to half of the original, the temperature change is relatively small, and the visibility remains low for a long time after the damper is closed and the recovery time is late. The research results have important guiding significance for the escape of underground fire.

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“…However, these monitoring and early warning methods still have certain drawbacks [2]. Bundle tube monitoring temperature measurement and distributed fiber optic temperature measurement are subject to large environmental factors in practical applications, and the data is easily distorted in complex mine environments [3][4][5]. Wireless self-assembling network temperature measurement systems will not be affected by problems such as pipelines being damaged.…”

Section: Introductionmentioning

confidence: 99%

Study on the Variation Laws and Fractal Characteristics of Acoustic Emission during Coal Spontaneous Combustion

et al. 2023

Self Cite

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Acoustic emission (AE) technology has the advantage of online localization to study the change laws of AE in the process of coal spontaneous combustion and to reveal the generation mechanisms of AE signal during the process of heating and rupture of coal body from a microscopic perspective. This paper first constructs a large-scale coal spontaneous combustion AE test system and conducts experimental tests on the AE signal in the process of coal spontaneous combustion. The results show that with the increase of temperature in the process of coal spontaneous combustion, the AE signal shows a trend of increasing fluctuations. Low-temperature nitrogen adsorption experiments studied the pore structure of coal spontaneous combustion, and the results showed a correspondence between the development of pores and the temperature of coal spontaneous combustion. Further, through the analysis of the evolution of the pore structure of coal through Fourier transform and fractal theory, it is found that the high-frequency main frequency AE signal and average frequency are continuously enhanced with the increase of temperature. The fractal dimension of the pore structure and the fractal dimension of the AE count of the coal body first rise and then decline. The mechanism of coal spontaneous combustion AE of coal is revealed, and the pore development caused by thermal stress when coal heats up is the main source of AE signal generation. The research in this paper is of great significance for applying AE technology to detect the position of coal spontaneous combustion.

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Research on a Spontaneous Combustion Prevention System in Deep Mine: A Case Study of Dongtan Coal Mine

Cited by 10 publications

References 35 publications

Exploration and Frontier of Coal Spontaneous Combustion Fire Prevention Materials

Exploration and Frontier of Coal Spontaneous Combustion Fire Prevention Materials

Research on typical fire impact and emergency escape planning in Yushuling Coal Mine

Study on the Variation Laws and Fractal Characteristics of Acoustic Emission during Coal Spontaneous Combustion

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