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隧道建设（中英文） ›› 2019, Vol. 39 ›› Issue (10): 1678-1689.DOI: 10.3973/j.issn.2096-4498.2019.10.015

• 施工技术 • 上一篇    下一篇

Key Construction Technologies for Overlapping Twisted Shieldbored Tunnels in Weak Waterrich Strata(富水软弱地层中麻花型盾构隧道群施工关键技术)

LI Jiangao1， WANG Changhong2, *   

  1. (1. The 3rd Engineering Co., Ltd., China Railway Tunnel Group, Shenzhen 518000, Guangdong, China;2.Department of Civil Engineering, Shanghai University, Shanghai 200444, China)
  • 收稿日期:2019-05-06 出版日期:2019-10-20 发布日期:2019-12-10
  • 作者简介:李建高（1978—），男，四川自贡人，2010年毕业于西南交通大学土木工程专业，本科，高级工程师，现从事盾构技术管理工作。E-mail： 390535750@qq.com。*通信作者： 王长虹， E-mail： changhong_wang@163.com。

富水软弱地层中麻花型盾构隧道群施工关键技术

李建高1, 王长虹2, *   

  1. (1. 中铁隧道集团三处有限公司， 广东深圳 518000; 2. 上海大学土木工程系, 上海 200444)
  • Received:2019-05-06 Online:2019-10-20 Published:2019-12-10
  • About author:*Corresponding author. E-mail: changhong_wang@163.com

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摘要：

The project under study is an overlapping twisted shieldbored tunnels in weak waterrich strata. The purpose of the study is to solve the key technological problems in the construction of the project. The optimal construction sequence of the overlapping twisted shield tunnels is determined according to the engineering geological conditions, the surrounding working environment, and theoretical analysis on the spatial relationship of the four tunnels, and verification control are carried out via monitoring means. The tunnel construction is properly timed, smart selfpropelled movable support jumbo is adopted, and grouting reinforcement technology is used to ensure the construction safety of the overlapping twisted shieldbored tunnels. The grouting prereinforcement technology and the clay shock technology are adopted to ensure the safety of the surrounding buildings. The technologies for the construction of the overlapping twisted shieldbored tunnels described in this paper is of great significance for the construction of similar overlapping tunnels with high shield launching/receiving risks and crossing under important structures with small clearance.

关键词: weak water rich strata, overlapping twisted shield bored tunnels, smart self propelled movable support jumbo, grouting reinforcement

Abstract:

为解决富水软弱地层中上下重叠、麻花交叉型盾构隧道群施工的关键技术难题，根据工程地质条件、周边工作环境和4条隧道空间位置关系进行理论分析，确定隧道群最优施工顺序，并通过信息化监测手段进行验证控制。通过控制施工时间，采用自行式智能支撑台车，注浆加固技术等措施确保了重叠、交叉段隧道施工安全；采用注浆预加固和克泥效技术保证了周边建筑物的安全。上下重叠、麻花交叉型隧道群施工技术对于类似空间交叠、始发/接收风险较大隧道、近距离下穿重要建构筑隧道的施工有较强的指导和借鉴意义。

Key words: 富水软弱地层, 重叠交叉盾构隧道, 自行式智能支撑台车, 注浆加固

中图分类号: 

主办单位：中铁隧道勘察设计研究院有限公司    主管单位：中铁隧道局集团有限公司

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