阻化泡沫防治煤自燃技术研究
发布时间：2018-10-31 20:30
【摘要】：煤炭是我国重要的基础能源和工业原料，在国民经济发展中具有非常重要的战略地位。我国煤炭自燃火灾也十分严重，国有煤矿有半数以上的矿井存在自然发火危险，煤矿安全生产面临的趋势十分严峻。为了防治煤自燃引起的灾害，国内外学者对煤自燃理论和井下防灭火方法进行了研究。 本文从研究阻化泡沫防治煤自燃入手，理论研究了阻化泡沫的主要成分选择，，利用程序升温实验和红外光谱实验分别从宏观和微观方面研究了阻化泡沫的阻化性能，并研究阻化泡沫在多孔介质中的运移规律，建立数值模型，对阻化泡沫在采空区内的运移堆积进行模拟，并分析阻化泡沫的运移堆积对采空区防火工作的作用。在理论和实验研究的基础上，对阻化泡沫应用设备及工艺进行了研究，并在赵楼煤矿1306工作面进行现场应用，分析了应用前后工作面气体变化情况。研究成果对于阻化泡沫现场应用和提高防灭火效率提供了理论参考。 为了得到阻化泡沫抑制煤自燃的最佳效果，论文对阻化泡沫材料的主要成分进行了研究。利用程序升温实验装置测试了阻化泡沫对煤自燃特性参数的影响，得到了阻化泡沫作用于煤样的阻化性能；通过傅里叶红外光谱实验，研究了阻化泡沫的阻化机理，证实了阻化泡沫通过破坏煤体低温活性结构，生成稳定链环，降低煤的自燃性能。 针对采空区空间隐蔽、现场观测阻化泡沫运移规律困难的特点，对阻化泡沫在多孔介质中的运移方式和流变特性进行了理论研究，建立符合采空区实际情况的数值模型，模拟泡沫在采空区内部的运移规律，研究采空区漏风对泡沫运移的影响，并分析了泡沫的运移堆积状态对工作面防火工作的作用。 通过理论和实践研究以及数值模拟，在赵楼煤矿1306工作面对阻化泡沫进行了现场实际应用，通过研究发泡设备及原理，确定了阻化泡沫的应用工艺以及设备的技术参数，解决了1306工作面停采回撤期间回风隅角附近气体浓度持续增大的问题，取得较好的现场效果，充分发挥出阻化泡沫的防灭火效率。
[Abstract]:Coal is an important basic energy and industrial raw material in China, and has a very important strategic position in the development of national economy. China's coal spontaneous combustion fire is also very serious, more than half of the state-owned coal mines have the danger of spontaneous combustion, the trend of coal mine safety production is very serious. In order to prevent the disasters caused by coal spontaneous combustion, domestic and foreign scholars have studied the theory of coal spontaneous combustion and underground fire prevention and extinguishing methods. In this paper, the selection of the main components of the retarded foams is studied theoretically, and the inhibition properties of the foams are studied from the macroscopic and microscopic aspects by using the programmed temperature test and the infrared spectrum experiment, respectively, from the aspects of macroscopic and microscopic aspects. The migration law of foams in porous media is studied and numerical model is established to simulate the migration and accumulation of foams in goaf and to analyze the effect of migration and accumulation of anti-foam on fire prevention work in goaf. On the basis of theoretical and experimental research, the application equipment and technology of anti-foaming foam are studied, and the field application of 1306 face in Zhaolou Coal Mine is carried out, and the change of gas in the working face before and after application is analyzed. The research results provide a theoretical reference for the field application of foam control and the improvement of fire prevention and extinguishing efficiency. In order to obtain the best effect of inhibiting coal spontaneous combustion, the main components of the foamed materials are studied in this paper. The influence of the foams on the spontaneous combustion characteristics of coal was tested by using the temperature programmed test device, and the inhibition properties of the foams acting on the coal samples were obtained. By Fourier transform infrared spectroscopy (FTIR), the mechanism of blocking foam is studied. It is proved that the retarded foam can destroy the active structure of coal body at low temperature, form a stable chain, and reduce the spontaneous combustion performance of coal. In view of the difficulty in observing the migration law of foams in goaf space, the migration mode and rheological characteristics of foams in porous media are studied theoretically, and a numerical model is established in accordance with the actual situation in goaf. This paper simulates the law of foam migration in goaf, studies the influence of air leakage in goaf on foam migration, and analyzes the effect of foam migration and accumulation state on working face fire prevention. Based on the theoretical and practical research and numerical simulation, the field application of the anti-foaming foam in the 1306 working face of Zhaolu Coal Mine is carried out. By studying the foaming equipment and its principle, the application technology and the technical parameters of the anti-foaming foam are determined. The problem of increasing the gas concentration near the corner of return air during the stoppage and withdrawal of 1306 working face has been solved, and good field effect has been obtained, and the efficiency of preventing and extinguishing the foam has been brought into full play.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD752.2
本文编号：2303444
[Abstract]:Coal is an important basic energy and industrial raw material in China, and has a very important strategic position in the development of national economy. China's coal spontaneous combustion fire is also very serious, more than half of the state-owned coal mines have the danger of spontaneous combustion, the trend of coal mine safety production is very serious. In order to prevent the disasters caused by coal spontaneous combustion, domestic and foreign scholars have studied the theory of coal spontaneous combustion and underground fire prevention and extinguishing methods. In this paper, the selection of the main components of the retarded foams is studied theoretically, and the inhibition properties of the foams are studied from the macroscopic and microscopic aspects by using the programmed temperature test and the infrared spectrum experiment, respectively, from the aspects of macroscopic and microscopic aspects. The migration law of foams in porous media is studied and numerical model is established to simulate the migration and accumulation of foams in goaf and to analyze the effect of migration and accumulation of anti-foam on fire prevention work in goaf. On the basis of theoretical and experimental research, the application equipment and technology of anti-foaming foam are studied, and the field application of 1306 face in Zhaolou Coal Mine is carried out, and the change of gas in the working face before and after application is analyzed. The research results provide a theoretical reference for the field application of foam control and the improvement of fire prevention and extinguishing efficiency. In order to obtain the best effect of inhibiting coal spontaneous combustion, the main components of the foamed materials are studied in this paper. The influence of the foams on the spontaneous combustion characteristics of coal was tested by using the temperature programmed test device, and the inhibition properties of the foams acting on the coal samples were obtained. By Fourier transform infrared spectroscopy (FTIR), the mechanism of blocking foam is studied. It is proved that the retarded foam can destroy the active structure of coal body at low temperature, form a stable chain, and reduce the spontaneous combustion performance of coal. In view of the difficulty in observing the migration law of foams in goaf space, the migration mode and rheological characteristics of foams in porous media are studied theoretically, and a numerical model is established in accordance with the actual situation in goaf. This paper simulates the law of foam migration in goaf, studies the influence of air leakage in goaf on foam migration, and analyzes the effect of foam migration and accumulation state on working face fire prevention. Based on the theoretical and practical research and numerical simulation, the field application of the anti-foaming foam in the 1306 working face of Zhaolu Coal Mine is carried out. By studying the foaming equipment and its principle, the application technology and the technical parameters of the anti-foaming foam are determined. The problem of increasing the gas concentration near the corner of return air during the stoppage and withdrawal of 1306 working face has been solved, and good field effect has been obtained, and the efficiency of preventing and extinguishing the foam has been brought into full play.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD752.2
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