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隧道建设(中英文) ›› 2013, Vol. 33 ›› Issue (7): 562-566.DOI: 10.3973/j.issn.1672-741X.2013.07.006

• 研究与探索 • 上一篇    下一篇

地铁隧道穿越南水北调干渠施工影响分析

杨喜1, 邹琦2, 王庆2   

  1. (1.广州地铁设计研究院有限公司, 广东广州 510010; 2.中国市政工程中南设计研究总院有限公司, 湖北武汉 430010)
  • 收稿日期:2013-03-08 修回日期:2013-05-13 出版日期:2013-07-20 发布日期:2013-07-17
  • 作者简介:杨喜(1984—),男,湖北黄冈人,2007年毕业于长安大学公路隧道与岩土工程专业,本科,助理工程师,现从事隧道及地下工程方面的设计工作

Analysis on Influence of Shield Tunneling Crossing Underneath Existing Trunk Canal of SouthtoNorth Water Transfer Project

YANG Xi1, ZOU Qi2, WANG Qing2   

  1. (1. Guangzhou Metro Design & Research Institute Co., Ltd., Guangzhou 510010, Guangdong, China; 2. Centralsouth China Municipal Engineering Design & Research Institute Co., Ltd., Wuhan 430010, Hubei, China)
  • Received:2013-03-08 Revised:2013-05-13 Online:2013-07-20 Published:2013-07-17

摘要:

以郑州轨道交通2号线向阳路站—南四环站区间盾构隧道下穿南水北调干渠工程为例,利用Midas/GTS有限元软件对地铁隧道下穿南水北调干渠在未通水及通水2种工况下进行对比模拟分析,通过现行沉降控制标准,得出以下结论: 1)左右线之间间距在2倍洞径以上,可有效减少左右线隧道对干渠的叠加影响; 2)在干渠未通水的情况下,隧道在渠底覆土8 m可满足沉降要求,在干渠通水之后,下穿隧道在渠底覆土厚度建议大于12 m。从地铁隧道施工方面考虑盾构施工对南水北调干渠可能产生的影响,以期为地铁隧道下穿南水北调干渠明渠设计及施工过程中线间距、覆土厚度选择、下穿时序及盾构掘进参数提供借鉴。

关键词: 地铁隧道, 南水北调, 干渠, 下穿, 数值模拟

Abstract:

The shieldbored tunnel from Xiangyanglu Station to Nansihuan Station of line 2 of Zhengzhou Metro crosses underneath the trunk canal of Southtonorth Water Transfer Project. The shield tunneling crossing underneath the trunk canal is simulated by means of Midas/GTS finite element program. Conclusions drawn are as follows: 1) If the spacing between the left Metro tunnel tube and the right Metro tunnel tube is more than 2d (d=tunnel diameter), the overlapping influence of the construction of the twin tunnel tubes on the trunk canal can be effectively reduced; 2) When there is no water in the trunk canal, the settlement requirements can be met when the overburden of the tunnel is 8 m; When there is water in the trunk canal, the overburden of the tunnel is proposed to be 12 m. 

Key words: Metro tunnel, SouthtoNorth Water Transfer Project, tunneling underneath across trunk canal, numerical simulation