新凉风垭隧道煤系地层段施工关键技术研究  

Study on the key construction technology of New Liangfenya in coal measure strata

作　　者：朱艳峰[1] 张雪松[1] 黄明普[2] ZHU Yanfeng;ZHANG Xuesong;HUANG Minpu(Guangzhou Panyu Polytechnic, Guangzhou 511483, China;China Railway 18 Bureau Group Co. Ltd, Tianjin 300222, China)

机构地区：[1]广州番禺职业技术学院,广东广州511483 [2]中铁十八局集团有限公司,天津300222

出　　处：《铁道科学与工程学报》2017年第9期1967-1973,共7页Journal of Railway Science and Engineering

摘　　要：穿越煤系地层隧道建设的主要地质灾害有瓦斯窒息、燃烧、爆炸和瓦斯突出等。目前,无论是铁路隧道还是公路隧道,揭煤技术的设计和施工都还处于探索阶段。渝黔铁路新凉风垭隧道煤系地层段施工的关键技术是解决煤系地层中有毒有害气体,煤与瓦斯突出、瓦斯及煤尘爆炸等可能出现的严重灾害,揭煤施工过程中通过水力压裂增透、抽排孔设计等措施以及瓦斯抽排方案的合理选择,安全、高效地完成煤系地层段的隧道施工,对提高我国瓦斯隧道的建设水平具有实用意义和理论价值。Disasters associated with gases during coal tunnels construction are major geological hazards.Gasesdisasters are in forms of poisoning,gas asphyxiation,combustion,explosion and outburst of coal and gas.Atpresent,the design and the construction technology of cutting through coal seam is still at the exploring stage ineither railway tunnels or highway tunnels.The key technology during the coal tunnels construction in New LiangFen Ya’s tunnel was to solve the possible serious disasters of toxics and harmful gases,coals and gases outbursts,gases and coals dust explosions and so on.By using a reasonable scheme of hydraulic fracturing,design of gasesholes and their drainage,and tunnels construction in coal sections were completed safely and efficiently.Thestudy found that this technology will be of great practical importance and also improves the theoretical values incoal tunnels construction level in our country.

关 键 词：煤系地层 铁路隧道 施工技术 

分 类 号：TD235.34[矿业工程—矿井建设]