炭质泥岩地层隧道瓦斯突出成因及处治措施研究
Study on the Causes and Treatment Measures of Gas Outburst in Carbonaceous Mudstone Tunnel
田娇 1杨洪 1杨智成2
作者信息
- 1. 贵州省交通规划勘察设计研究院股份有限公司,贵阳 550081
- 2. 贵州省公路工程集团有限公司,贵阳 550008
- 折叠
摘要
为解决炭质泥岩地层隧道瓦斯突出问题,依托兰州至海口国家高速公路重庆至遵义段(贵州境)扩容工程桐梓隧道,通过现场调查和理论分析,总结了该隧道瓦斯突出动力现象及特点,分析了其瓦斯突出的规律以及影响因素,提出了钻孔泄压方案及处治措施.结果表明:经处治后,炭质泥岩施工掌子面的动力现象有了明显减少和减弱,工程施工基本不受影响,表明了该处治措施的效果较好.研究结果可供炭质泥岩地层及其他非煤系地层瓦斯隧道的设计和施工参考.
Abstract
In order to solve the problem of gas outburst in carbonized mudstone stratum tunnel,the dynamic phenomenon and characteristics of gas outburst in the tunnel are summarized,the law and influencing factors of gas outburst are analyzed,and the pressure relief scheme and treatment measures are put forward through field investigation and theoretical analysis,based on Tongzi tunnel,expansion project of Chongqing-Zunyi section of National Expressway from Lanzhou to Haikou(Guizhou province).The results show that after treatment,the dynamic phenomenon of the coal mudstone construction face is obviously reduced and weakened,and the engineering construction is basically not affected,indicating that the effect of the treatment measures is good.The research results can be used as a reference for the design and construction of gas tunnels in the coal mudstone stratum and other non-coal strata.
关键词
炭质泥岩地层/公路隧道/瓦斯突出/处治措施Key words
carbonaceous mudstone stratum/highway tunnel/gas outburst/treatment measures引用本文复制引用
基金项目
贵州省科技重大专项(黔科合重大专项字[2018]3011)
出版年
2024
NETL
NSTL
万方数据