台阶式瓦斯排放技术在C1煤层中的应用  

Application of Stepped Gas Discharge Technology in C1 Coal Seam

作　　者：姜游 Jiang You(China Railway 17^th Bureau Group First Engineering Co.Ltd.,Qingdao Shandong 266555,China)

机构地区：[1]中铁十七局集团第一工程有限公司

出　　处：《铁道建筑技术》2019年第11期28-32,共5页Railway Construction Technology

基　　金：中铁十七局集团科技研究开发计划项目(2017-32)

摘　　要：近年来,在我国铁路修建过程中瓦斯隧道所占比例越来越高,对于瓦斯隧道施工技术的要求也日趋增高.而煤层瓦斯是隧道建设中的极高风险源之一,易引发瓦斯燃烧、瓦斯爆炸等事故.在穿越煤层时需根据煤层情况选取合适的抽排瓦斯措施和揭煤方案,抽排瓦斯成为揭煤前的关键环节.本文依托欧家湾典型高瓦斯隧道C1煤层自身特点,提出了台阶式多孔排放的思路,并结合工程实际总结了瓦斯隧道施工控制要点,可供有害气体隧道施工参考.In the last few years,the proportion of gas tunnels in the process of railway construction in China is increasing,and the requirements for gas tunnel construction technology are also increasing.Coal seam gas is one of the very high risk sources in tunnel construction,which is easy to cause gas combustion,gas explosion and other disasters and accidents.According to the coal seam situation,it is necessary to select the appropriate gas drainage measures and the coal exposure scheme to cross the coal seam,and the gas drainage has become the key link before the coal mining.Based on the characteristics of the Cl coal seam in the typical high gas tunnel at Oujiawan,this paper put forward the assumption of step porous discharge,and summed up the key points of the gas tunnel construction in combination with the engineering practice,which could be used as a reference for the construction of the harmful gas tunnel.

关 键 词：高瓦斯隧道 C1煤层 瓦斯排放 台阶式排放 

分 类 号：U458[建筑科学—桥梁与隧道工程] TD713[交通运输工程—道路与铁道工程]