土工基础

›› 2017, Vol. 31 ›› Issue (4): 406-409.

• 工程实录 • 上一篇    下一篇

广西炭质岩公路隧道二衬支护时机研究

吴庆全，李皓晖，黄家华，黄保胜   

  1. （广西交通规划勘察设计研究院有限公司，南宁 530011）
  • 收稿日期:2017-05-11 修回日期:2017-05-24 出版日期:2017-08-20 发布日期:2017-08-22
  • 作者简介:吴庆全（1965-），男，高级工程师，研究方向为公路隧道、桥梁、道路的勘察设计和检测。
  • 基金资助:

    2016年广西交通标准化项目（20160422）

The research about Secondary liner supporting time In soft rock highway tunnel

WU Qingquan, LI Haohui, HUANG Jiahua， HUANG Baosheng   

  1. (Guangxi Traffic Planning Survey and Design Institute Co.Ltd., Nanning 530011)
  • Received:2017-05-11 Revised:2017-05-24 Online:2017-08-20 Published:2017-08-22

摘要： 炭质软岩公路隧道施工过程中，确定二衬支护的最佳施作时机意义重大，而公路规范中给出的参照标准显得片面及没有针对性；以广西炭质区某公路隧道为研究对象，考虑围岩的崩解、膨胀、蠕变等特性，采用FLAC3D软件进行数值分析，结合现场监测数据，综合分析确定二衬支护的最佳施作时机，指导现场施工。

关键词: 公路隧道, 炭质软岩, 二衬支护时机, 数值分析

Abstract: In the process of construction of carbonaceous rock road tunnel, it is of great significance to determine the optimal timing of the second lining support, and the reference standard given in the highway specification is one-sided and not targeted. A highway tunnel in Guangxi Carbonaceous Area is the object of study Considering the characteristics of collapse, expansion and creep of surrounding rock, FALC3D software is used for numerical analysis, combined with on-site monitoring data to determine the best timing of the second lining support and guide the construction.

Key words: Highway Tunnels, Carbonaceous, Secondary Lining Support Time, Numerical Analysis