瓦斯隧道内瓦斯浓度分布特征研究  

Study on Distribution Characteristics of Gas Concentration in Gas Tunnel

作　　者：李海波 LI Haibo(Long Lang Expressway Construction and Development ,Ltd. Loudi,Hunan 417000,China)

机构地区：[1]龙琅高速公路建设开发有限公司

出　　处：《公路工程》2019年第5期216-220,共5页Highway Engineering

基　　金：湖南省交通运输计划科技项目(201715)

摘　　要：安平隧道是湖南省高速公路建设以来,地质条件最为复杂的隧道,集瓦斯、采空区、岩溶、软岩大变形和洞口坡积体于一体的特长隧道。构建了瓦斯的特征模型,采用数值模拟手段对瓦斯隧道内瓦斯浓度的分布特征进行分析,揭示了有模板台车存在的瓦斯浓度的分布规律,为安平隧道建设提供了技术支持,也可为类似隧道提供参考。Anping Tunnel is the longest tunnel with the most complicated geological conditions since the construction of Hunan Expressway. It integrates gas,goaf,karst,large deformation of soft rock and slope area at the entrance. In this paper,the characteristic model of gas is constructed,and the distribution characteristics of gas concentration in gas tunnel are analyzed by numerical simulation. The distribution law of gas concentration existing in template trolley is revealed. It provides technical support for the construction of Anping Tunnel,and also provides reference for similar tunnels.

关 键 词：隧道 瓦斯浓度 分布特征 

分 类 号：U458[建筑科学—桥梁与隧道工程]