摘要
针对六道湾煤矿急倾斜水平分层放顶煤开采过程中经常遇到的工作面及上分层采空区易发火的问题,通过合理分析与现场实践,采用对上分层开探孔监测的方法,即利用探孔作为观测孔,安装水柱计来动态监测上分层采空区与工作面之间的压差,并通过对调节风窗的适时调节及对上分层采空区进行开式注N2形成氮气蔽的方法,有效阻止了对工作面及上分层采空区的漏风,将供氧量降低到了相对较低的程度,达到了均压防灭火的目的,是均压灭火监测技术在煤矿的成功应用。
This paper discusses gob fire at workface and last layer in horizontal section top coal caving. Through reasonable analysis and field practice, by boring holes in last layer, namely using the hole as the observation hole and installing water-gauges to monitor differential pressure between workface and last layer, and at the same time adjusting the orifice on a door and injecting nitrogen to last layer, purpose of preventing tunnel from leaking air towards gob of workface and last layer can be attained. It's a successful application of pressure balance fire-extinguishing in coal mine.
出处
《西安科技大学学报》
CAS
北大核心
2004年第4期409-411,421,共4页
Journal of Xi’an University of Science and Technology
