官地煤矿29403综放工作面停采撤架期间的防灭火技术研究

发布时间：2018-10-14 20:07

【摘要】：本论文根据煤层自燃的本质特性和自燃的时间和空间特性,以及综放工作面停采撤架期间煤层自燃发火因素的特殊性,结合官地煤矿现有的技术与设备,对综放工作面停采期间的煤层防灭火提出了“以预防为主、早期预报作先导、固瑞特GRT系列防灭火材料、红外热像近距离探测等先进技术相结合”的综合防治方法。首先,论文对煤的自燃特性、工作面实际条件等进行了分析,给出了工作面停采撤架前煤炭自燃的预防措施,该措施主要围绕降低煤的煤的开采发火危险性、破坏蓄热条件、减少风量供给等方面来进行,这些措施主要针对综放面撤架期间自然发火的因素,对保障该矿井的安全撤架具有十分重大的现实意义。其次,采用Fluent软件模拟的方式对29403综放工作面采空区停采撤架期间自燃发火危险性程度作出了预测,模拟出了停采撤架期间采空区风流流场和温度场的分布规律。根据对模拟的结果分析,对29403综放工作面的撤架期间通风方式、风量、拆架方案进行了设计,并制定了拆架期间的防灭火专项方案。同时,论文将煤炭自燃预报及火源探测作为防治的关键技术,研究并建立了29403综放工作面停采撤架期间的煤炭自燃预测预报体系。即利用指标气体的监测、煤体温度监测和红外热像仪探测来共同实现,并且及时监测到气体异常,准确定位高温点,通过得当措施予以消除。最后,通过执行防火安全专项方案以及自燃预测预报技术等手段,顺利完成了29403综放工作面支架的撤出和密闭工作,并且制定了撤架后的防灭火安全专项方案。
[Abstract]:According to the essential characteristics of spontaneous combustion of coal seam, the time and space characteristic of spontaneous combustion, and the particularity of factors of spontaneous combustion of coal seam during the period of stoppage and withdrawal of frame in fully mechanized caving face, this paper combines the existing technology and equipment of Guandi Coal Mine. This paper puts forward a comprehensive prevention and control method for preventing and extinguishing coal seam in the period of stoppage mining of fully mechanized caving face, which is based on prevention, forerunner of early prediction, combination of advanced technologies such as GRT series fire extinguishing materials, infrared thermal image close detection and so on. First of all, the paper analyzes the characteristics of coal spontaneous combustion and the actual conditions of the working face, and gives the preventive measures of coal spontaneous combustion before the coal stoppage, which mainly revolves around reducing the risk of coal mining and burning and destroying the heat storage condition. These measures are mainly aimed at the factors of spontaneous combustion during the withdrawal of fully mechanized caving face, which is of great practical significance to ensure the safety of the mine. Secondly, Fluent software is used to predict the degree of spontaneous combustion in the goaf of the 29403 fully mechanized caving face during the stoppage and the distribution of the air flow field and temperature field in the goaf during the period of stoppage. Based on the analysis of the simulation results, the ventilation mode, air volume and lifting scheme of 29403 fully mechanized caving face during the period of removing the frame are designed, and the special scheme of fire prevention and extinguishing during the period of removing the frame is established. At the same time, the paper takes the coal spontaneous combustion prediction and fire source detection as the key technology of prevention and control, studies and establishes the coal spontaneous combustion prediction system during the period of stoppage and withdrawal of coal spontaneous combustion in 29403 fully mechanized caving face. That is to say, the monitoring of target gas, the temperature monitoring of coal body and the detection of infrared thermal imager can be realized together, and the abnormal gas can be detected in time, the high temperature point can be accurately located, and the measures should be taken to eliminate it. Finally, by implementing the fire prevention and safety program and the technology of spontaneous combustion prediction and prediction, the work of withdrawal and sealing of the support of 29403 fully mechanized caving face is successfully completed, and the special scheme of fire prevention and extinguishing after removing the frame is formulated.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD753

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