南屯煤矿相邻采空区自燃隐患监测及防治技术

发布时间：2018-03-02 23:25

本文选题：相邻采空区　切入点：自燃　出处：《西安科技大学》2017年硕士论文　论文类型：学位论文

【摘要】：在我国,随着矿井开采强度加大、速度加快,工作面开采结束后留下大面积采空区,造成大量采空区彼此相邻,这为矿井后续安全开采带来极大的隐患。本文以南屯煤矿33 02工作面相邻采空区为研究对象,采用理论分析、实验研究和现场应用相结合的研究方法,对采空区煤炭自燃特性、煤自燃危险区域监测技术和防治技术进行了研究。利用煤自然发火实验台测定了南屯煤矿煤自燃特征参数,对自然发火过程中的升温速率与高温点移动规律进行了分析,提出煤自燃指标气体(CO、C2H4、C2H4/C2H6)及对应特征温度。研制出了集温湿度、一氧化碳、氧气、甲烷、压差传感器于一体的矿用本安型多参数无线传感器和监测基站,形成具有可剪裁性、冗余性、鲁棒性等特点的采空区煤自燃特征信息气-温-压差联合监测系统。设计开发了适合煤自燃危险区域的无线监测预警软件,实现了煤自燃危险区域无线在线监测预警功能,软件包括煤自燃特征信息采集与监测、煤自燃灾害预警、分析与报表等功能模块。根据现场实际情况,通过监测系统现场应用测试,各类监测数据采集、通讯具有良好的时效性和可靠性,整个系统运行稳定,适合于不同区域的煤自燃特征信息监测,为矿井安全生产提供了技术保障。针对南屯煤矿三采东区相邻采空区自燃隐患,提出了实施大范围封闭、施工钻孔压注惰气、注浆、对沿空侧喷浆堵漏、快速封堵、相联通的巷道封闭及充填等防治措施,通过现场具体应用,能够有效防治自燃隐患的发生。
[Abstract]:In China, with the increase of mining intensity and the acceleration of mining speed, a large area of goaf is left after the end of mining, which results in a large number of mined-out areas adjacent to each other. This paper takes the adjacent goaf of 3302 face of Nantun Coal Mine as the research object, adopts the research method of combining theoretical analysis, experimental study and field application to study the spontaneous combustion characteristics of coal in goaf. The monitoring technology and prevention technology of coal spontaneous combustion in dangerous area were studied. The characteristic parameters of coal spontaneous combustion in Nantun coal mine were measured by using the coal spontaneous combustion test bench, and the heating rate and high temperature point movement law in the process of spontaneous combustion were analyzed. The coal spontaneous combustion index gas COC _ 2H _ 4C _ 2H _ 4 / C _ 2H _ 6) and its corresponding characteristic temperature are put forward. A multi-parameter wireless sensor and a monitoring base station are developed, which include temperature and humidity, carbon monoxide, oxygen, methane and pressure difference sensors. Based on the characteristics of redundancy and robustness, the coal spontaneous combustion information gas-temperature-pressure difference joint monitoring system in goaf is developed. A wireless monitoring and warning software is designed and developed for coal spontaneous combustion danger area. The wireless on-line monitoring and warning function of coal spontaneous combustion danger area is realized. The software includes coal spontaneous combustion characteristic information collection and monitoring, coal spontaneous combustion disaster warning, analysis and report form and so on. Through the field application and test of the monitoring system, all kinds of monitoring data collection, the communication has good timeliness and reliability, the whole system runs stably, which is suitable for monitoring the characteristic information of coal spontaneous combustion in different areas. In view of the hidden trouble of spontaneous combustion in the adjacent goaf in the eastern part of the third mining area of Nantun Coal Mine, the authors put forward the following measures: large scale sealing, drilling borehole pressure injection of inert gas, grouting, leakage plugging along the side of the hole, and quick sealing. The control measures of roadway closure and filling can effectively prevent and cure the hidden danger of spontaneous combustion through the concrete application on the spot.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD752.2

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