摘要
随着我国西南部交通建设的不断发展,工程中长大隧道不断增多,而往往因工期紧迫需要开辟新的工作面,挑顶施工就显得尤为重要。郑万铁路湖北段罗家山隧道全长10 640 m,为超大断面双线高铁隧道,4#横通道与正洞交叉段为极软弱破碎Ⅴ级围岩。通过对4#横通道转正洞挑顶施工技术和要点进行研究总结,可为类似岩层隧道挑顶施工提供参考和借鉴。
With the development of traffic construction in southwest China, there are more and more long tunnels in engineering projects. It is often necessary to open up new working faces because of the urgent time, so it is very important to roof ripping construction. The Luojiashan Tunnel of Zheng-Wan Railway project in Hubei has a full length of 10 640 m. which is a large-section and double-line railway tunnel. Cross section of 4# transverse channel and the main tunnel is of extremely soft and broken rock, with the degree of V. Through the research on construction technology and key points of this roof ripping construction, it can provide reference for tunnel roof ripping construction in similar rock stratum.
出处
《铁道建筑技术》
2018年第2期38-40,92,共4页
Railway Construction Technology
基金
中铁十二局集团第二工程有限公司科技研究开发计划(公司科〈2017〉17号)
关键词
软弱围岩
挑顶
施工技术
weak rock
roof ripping construction
construction technique
