土工基础

›› 2013, Vol. 27 ›› Issue (2): 71-74.

• 工程实录 • 上一篇    下一篇

湿陷性黄土隧道围岩变形特性研究

王可用   

  1. （中铁十四局集团，济南 260061）
  • 收稿日期:2012-11-03 出版日期:2013-04-20 发布日期:2013-04-26
  • 作者简介:王可用(1973-)，男，中铁十四局集团第二工程有限公司高级工程师。

The Study on Deformation Characteristics of Tunnels in Collapsible Loess

WANG Keyong   

  1. (China Railway 14th Bureau Group, Jinan, 250061)
  • Received:2012-11-03 Online:2013-04-20 Published:2013-04-26

摘要： 湿陷性黄土在遇水后会发生显著的附加变形，具有极低的承载力，是黄土隧道建设面临的严峻的工程地质问题。以太兴铁路湿陷性黄土隧道为研究对象，对施工期间钢拱架变形进行监测，确定了湿陷性黄土隧道的围岩变形特性，并反馈支护参数，对支护措施提出建议，为以后类似隧道的建设提供了丰富的技术和经验。

关键词: 湿陷性黄土隧道, 拱架变形, 应变计

Abstract: When wetting, the collapsible loess will generate a significant magnitude of additional deformations and the bearing capacity will also reduce significantly. It is one of the severe potential engineering geological hazards for tunnels in these soils. This paper presents a case history of construction of Taixing railway tunnels in the loess. The deformations of the steel arch supporting structures were monitored during the construction. The soil mass deformations surrounding the tunnels are determined and the supporting structure design parameters are backanalyzed. The monitoring data enrich the experiences of the tunnel construction in similar soils.

Key words: Tunnels in Collapsible Loess, Deformation of Arch Supporting Structures, Strain Gauges