近距离煤层群开采上覆煤层自燃危险区域探测技术

摘要

针对近距离煤层群采空区自然发火隐蔽高温区难以识别问题,采用分布式光纤温度探测技术对火源高温点监测,以及井下近距离抽气的束管探测技术对气体异常点监测.根据近距离煤层群开采遗煤分布特征及漏风规律,布置符合现场实际情况的气体测点,通过现场观测结果研究了采空区内温度分布及气体分布规律.结果表明:光纤测温结合近距离束管抽气的方法能较全面地监测近距离煤层群开采上覆煤层自燃关键参数变化,同时对类似矿井火区探测研究具有较好的借鉴意义.%In order to solve the difficulty problems that contiguous coal seam group goaf spontaneous combustion conceal high temperature could not distinguished easily, and then distributed optical fiber temperature measurement technology was applied in fire source high temperature monitoring, and gas outlier was monitored with underground contiguous gas extraction tube bundles detection technology.According left-over coal distribution characters and ventilation leakage law of contiguous coal seam group mining, and the test points that conformed the practical situation was layout, and goaf temperature distribution and gas distribution law were studied according observation results in field.The results showed that overlying coal seam spontaneous key parameters of contiguous coal seam group mining could be monitored fully with compound method of optical fiber temperature measurement and contiguous tube bundles, and it references for similar situation.