瓦斯突出隧道掘进工作面瓦斯涌出强度影响因素分析及控制措施研究  

Analysis of Influencing Factors of Gas Outburst Intensity of Tunneling Face of Gas Tunnel and Its Control Methods

作　　者：吴元金[1] 杨立新[1] 苟红松 

机构地区：[1]中铁隧道集团有限公司勘测设计研究院,广东广州511455 [2]中铁二院工程集团有限责任公司,四川成都610031

出　　处：《隧道建设》2017年第10期1262-1268,共7页Tunnel Construction

摘　　要：为掌握和控制瓦斯涌出的危险性,结合煤层瓦斯流动理论,分析隧道掘进时瓦斯涌出的规律,提出瓦斯突出隧道瓦斯涌出强度的计算方法及控制措施,并指出瓦斯抽放是控制瓦斯突出隧道瓦斯涌出强度的重要措施。研究结果表明:采取合理有效的瓦斯涌出强度控制措施后,掘进工作面瓦斯涌出强度可以控制在0.5 m^3/min以内,可以极大地提高瓦斯突出隧道的施工安全性。During the construction of gas outburst tunnel,the dynamics of gas outburst are often difficult to master and control; but it is the top priority of the safe construction of gas outburst tunnel. In this paper,the gas flow theory of coal seam is studied; the gas outburst rules of the tunnel are analyzed; the calculation methods and control methods for gas outburst intensity are proposed; meanwhile,it is pointed out that the gas drainage is the most important key to gas outburst intensity control. The study results show that the gas outburst intensity of tunneling face is effectively controlled within 0. 5 m^3/min and the construction safety of the gas outburst tunnel can be significantly improved by carrying out rational gas outburst control methods.

关 键 词：瓦斯突出隧道 瓦斯涌出强度 煤壁瓦斯涌出 落煤瓦斯涌出 瓦斯抽放 

分 类 号：U458[建筑科学—桥梁与隧道工程]