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隧道建设(中英文) ›› 2008, Vol. 28 ›› Issue (6): 656-659.DOI: A

• 研究与探索 • 上一篇    下一篇

粉细砂地层大跨浅埋隧道注浆管棚数值分析

李力   

  1. 中铁隧道勘测设计院有限公司
  • 收稿日期:2008-08-28 修回日期:2008-10-31 出版日期:2008-12-20 发布日期:2009-12-02
  • 作者简介:李力(1979—)|男|汉族|内蒙古通辽人|2007年3月毕业于北京交通大学岩土专业|硕士研究生|现为助理工程师|从事隧道设计工作。

Numerical Analysis on Grouted Roof Pipes of Largespan
Shallowburied Tunnel in Fine Silt Sand Ground

LI Li   

  1. China Railway Tunnel Survey and Design Institute Co., Ltd.
  • Received:2008-08-28 Revised:2008-10-31 Online:2008-12-20 Published:2009-12-02

摘要:

 结合北京地铁四号线西单—灵境胡同渡线隧道工程,利用理论分析、数值模拟等研究手段,研究分析在粉细砂地层中修建大跨隧道时注浆管棚的预支护作用机理、围岩塑性区范围、地表沉降最大值及不同支护条件下的沉降比较,经过实践验证,取得了良好的效果。

关键词:  , 粉细砂注浆管棚作用机理数值模拟

Abstract:

Taking XidanLingjing Hutong crossover tunnel on line 4 of Beijing Metro as example, the author, by means of theoretical analysis and numerical simulation, studies on the advance reinforcement mechanism of grouted roof pipes, the scope of the plasticized zones of the ground, the maximum ground surface settlement values and the comparison of the settlement under different reinforcement modes in the construction of largespan tunnels located in fine silt sand ground. The construction practice confirms that the study has achieved good results.

Key words:  , fine silt sandgrouted roof pipeworking mechanismnumerical simulation

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