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以高瓦斯极近距离煤层群易发生自然发火为背景,对高瓦斯矿井复合采空区自燃危险因素进行分析研究,提出了复合采空区动态闭环防控技术体系:首先对采空区进行实时监测,在监测的基础上,动态调控瓦斯抽采量,对重点区域遗煤实施高低位联合注浆,对大范围复合采空区实施全断面帷幕注氮,形成监测、调控、治理相结合的闭环防控体系。
Taking the spontaneous combustion prone to spontaneous combustion in the gassy coal mines near the high gassy gas field as the background, the risk factors of spontaneous combustion in the gob of the high gassy mine are analyzed and the dynamic closed-loop prevention and control technology system of the composite goaf is put forward. Firstly, Monitoring, on the basis of monitoring, dynamic control of gas extraction, coal seam in key areas of implementation of high and low bit joint grouting, a wide range of composite gob area full implementation of curtain curtain nitrogen, the formation of monitoring, control and treatment of a combination of Closed-loop prevention and control system.