土工基础

›› 2012, Vol. 26 ›› Issue (4): 88-90.

• 工程实录 • 上一篇    下一篇

麻武高速大别山隧道围岩等级与变形关联性分析探讨

张桂涛1，曹春生2，程康3，付海3   

  1. 1.中天路桥有限公司，武汉 430030；2.湖北省公路工程咨询监理中心，武汉 430050；3.武汉理工大学土木工程与建筑学院，武汉 430070
  • 收稿日期:2011-10-21 出版日期:2012-08-20 发布日期:2012-09-07
  • 作者简介:张桂涛，男，高级工程师，研究方向为高速公路施工管理。

Analysis of the Relationship between Grade and Deformation of Rock Surrounding in Dabie Mountains Tunnel Mawu Highway

ZHANG Guitao1，CAO Chunsheng2, CHENG Kang3, Fu Hai3   

  1. 1.Zhongtian Road and Bridge Co., Ltd.，Wuhan 430030；2.Consulting and Supervision Center
     of Hubei Province Highway Engineering, Wuhan 430050；3. Wuhan University of Technology, Wuhan 430070
  • Received:2011-10-21 Online:2012-08-20 Published:2012-09-07

摘要： 归纳总结了隧道掘进围岩分类方法，提出了适合于大别山隧道围岩等级划分方法。根据实际监测资料，得出围岩等级与变形有三种相关关系：一是Ⅱ~Ⅲ级坚硬、完整围岩，其围岩变形主要呈光滑曲线；二是Ⅳ~Ⅴ级围岩，其变形呈“似根号”型曲线；三是软弱夹层、破碎带，其变形呈“厂”字型曲线。对于这几种变形曲线，其变形速率发生突变处，要加强监测，必要时启动应急预案，确保洞内安全。

关键词: 公路隧道, 围岩等级, 变形, 关联性

Abstract: In this paper, a classification method of rock mass for tunnel engineering in Dabiesan is summarized. Based on the monitored data, three different relationships between the Rock Mass Class and the tunnel deformation are obtained. First, hard and massive rock mass with a Class of II ~ III has a smooth deformation curve. The Class III-V rock mass has a deformation curve similar to the square root symbol. The weak and fractured rock mass has complete elasticplastic perfect deformation characteristics. In tunnel excavation in these rock masses, if the deformation rate has a sudden change, more frequent monitoring is necessary to ensure construction safety.

Key words: Highway Tunnels, Rock Mass Classifications, Tunnel Deformation, Correlations