气室连通管调压技术调控矿井采空区瓦斯涌出实践

在煤矿无煤柱开采过程中,采煤工作面及其作业空间往往因处于空气压能相对低位,受到邻近采空区内瓦斯等有害气体侵入的威胁。通过研究和实施气室连通管调压技术,合理改变采煤工作面邻近老空区外围的压能关系,调控老空区瓦斯涌出方向和涌出量,有效阻止老空区高浓度瓦斯侵入回采工作面作业空间。

Practice of pressure adjusting technology by air chamber piping system for controlling gas in goaf

With respect to the pillarless mining operations,the mining district and its working faces were very much prone to the exposure of harmful gases originated from the adjoining goaf as the pressure energy at the mining district was relatively lower.Given this a gas chamber piping system was proposed where the ventilation system was not allowed to be adjusted or such regulations were not favorable.To be specific,auxiliary retaining walls were to be constructed to form a gas chamber along with the original goaf...