在开滦唐山矿业公司多年从事瓦斯抽放试验的基础上, 着重对影响密闭抽放效果的原因进行了详细的研究分析, 并提出了采用调压室联合抽放采空区瓦斯的技术对策。 Based on the gas drainage experiment conducted by Kailuan Tangshan Mining Company for many years, the reasons that affect the effect of airtight drainage are emphatically studied and analyzed. The technical countermeasures of using the surge chamber to jointly vent the gas in the goaf are put forward.