土工基础

›› 2013, Vol. 27 ›› Issue (6): 34-37.

• 工程实录 • 上一篇    下一篇

膨胀性黄土隧道大变形控制技术研究

于新军   

  1. （中铁十四局集团公司，济南 250000）
  • 收稿日期:2013-10-16 出版日期:2013-12-20 发布日期:2013-12-21
  • 作者简介:于新军(1966-)，男，高级工程师,研究方向为铁路和公路工程施工组织和技术管理。

Control of Large Deformation of Tunnels in Expansive Soils

YU Xinjun   

  1. （China Railway Fourteenth Construction Bureau Co., Ltd., Jinan 250000）
  • Received:2013-10-16 Online:2013-12-20 Published:2013-12-21

摘要： 膨胀性黄土隧道开挖，运用三台阶七步开挖工法，对围岩变形控制效果不太好，所以优化三台阶七步开挖工法对膨胀性黄土隧道大变形的控制，具有重要的工程应用意义。以太兴铁路二标段某膨胀性黄土铁路隧道工程为背景，对隧道围岩进行监控量测，掌握围岩的变形特性；提出优化施工工法及设置大锁脚的控制大变形措施。

关键词: 膨胀性黄土隧道, 七步开挖工法, 现场监测, 工法优化, 大锁脚

Abstract: The conventional threeverticalbencheswithsevenareas excavation method does not have a good result in terms of deformation control of the surrounding soil mass in the excavation of tunnels in expansive soils. It has an important engineering implication of optimizing this conventional excavation method so that it can be used in the expansive soils. This paper presents a case study of the optimized method used in the tunnel excavation in expansive soils in Taixing Railway No. 2 Bid Package project. The deformation of the surrounding soil mass was monitored and the improved excavation method was proposed.

Key words: Tunnel in Expansive Soils, Threebenches with Sevenareas Excavation Method, Construction Monitoring, Improvement of Excavation Process, Stiff Support at Tunnel Shoulders