地铁双联拱硬岩隧道非爆破开挖关键技术研究  

Research on key technologies for non-blast excavation of double-arch hard rock tunnel in subway

作　　者：韩彬彬 刘汉龙 MA Yunpeng LUO Jian LI Xujie MA Yunpeng;HAN Binbin;LUO Jian;LIU Hanlong;LI Xujie(China Railway Shanghai Engineering Bureau Group First Engineering Co.,Ltd.,Wuhu 241060,China;China Railway(Guangzhou)Investment and Development Co.,Ltd.,Guangzhou 510308,China)

机构地区：[1]中铁上海工程局集团第一工程有限公司,安徽芜湖241060 [2]中铁(广州)投资发展有限公司,广东广州510308

出　　处：《中国高新科技》2023年第24期105-106,119,共3页

摘　　要：文章针对广州地铁双联拱硬岩隧道非爆破开挖施工过程中的技术难题,总结研究了超前地质预报、超欠挖控制、长台阶+下台阶拉坡道等关键技术,并对悬臂掘进机铣挖工艺进行了优化。研究结果表明,采用超前地质预报技术可以减少地质灾害风险,超欠挖控制技术可以提高开挖精度,长台阶+下台阶拉坡道施工技术可以适应大断面隧道开挖要求。同时,通过喷雾除尘系统优化悬臂掘进机铣挖工艺,可以有效控制粉尘污染。研究成果为今后类似工程提供了有价值的参考。In view of the technical problems in the construction process of non-blasting excavation of double-arch hard rock tunnel of Guangzhou Metro,this paper summarizes and studies the key technologies such as advanced geological prediction,over-under-excavation control,and long-step+down-step ramp,and optimizes the milling process of cantilever roadheader.The results show that the risk of geological disasters can be reduced by using advanced geological prediction technology,the excavation accuracy can be improved by over-under-excavation control technology,and the construction technology of long step+down-step ramp can be adapted to the excavation requirements of large-section tunnels.At the same time,the cantilever milling process can be optimized by the spray dust removal system,which can effectively control dust pollution.The research results provide a valuable reference for similar projects inthefuture.

关 键 词：地铁 硬岩隧道 非爆破开挖 关键技术 工艺优化 

分 类 号：U231[交通运输工程—道路与铁道工程]