长江科学院院报 ›› 2014, Vol. 31 ›› Issue (11): 12-16.DOI: 10.3969/j.issn.1001-5485.2014.11.0032014,31(11):12-16

• 岩石力学特性与试验 • 上一篇    下一篇

考虑岩体流变的隧道锚长期稳定性研究

付建军1,蒋武军2,赵海斌1,梅松华1   

  1. 1.中国电建集团 中南勘测设计研究院有限公司 水能资源利用关键技术湖南省重点实验室,长沙 410014;
    2.湖南省高速公路管理局,长沙 410014
  • 收稿日期:2014-07-22 修回日期:2014-11-05 出版日期:2014-11-01 发布日期:2014-11-05
  • 作者简介:付建军(1983-),湖南浏阳人,高级工程师,博士,主要从事滑坡(地下洞室等)监测、设计及稳定分析技术研究,(电话)0731-87520527(电子信箱)fjj77tsl@126.com。
  • 基金资助:
    中国电力建设集团有限公司科技项目(SD2013-14)

Long-term Stability of Tunnel Anchor in Consideration of Rock Rheology

FU Jian-jun1, JIANG Wu-jun2, ZHAO Hai-bin1, MEI Song-hua1   

  1. 1.Hunan Key Laboratory of Key Technology on Hydropower Development, PowerChina Zhongnan Engineering Corporation Limited, Changsha 410014, China;
    2. Hunan Highway Management Office, Changsha 410014, China
  • Received:2014-07-22 Revised:2014-11-05 Online:2014-11-01 Published:2014-11-05

摘要: 岩体流变是隧道锚长期稳定性研究重点之一。以FLAC3D软件中CVISC流变模型为理论基础,通过单轴压缩流变试验及接触面长期抗剪强度试验获得与岩体流变相关的力学参数,并将CVISC模型和获得的参数融入依托工程数值仿真模型,进行长期稳定性分析。分析结果显示隧道锚在1倍设计主缆力施加后100a内,锚塞体、围岩及锚塞体与围岩接触面长期变形小,较符合工程设计安全要求。上述研究思路与结果可为类似工程研究提供参考及借鉴。

关键词: 隧道锚, 长期稳定性, 单轴压缩流变, 接触面长期抗剪强度, 锚塞体

Abstract: Rock rheology is a focus in analysing long-term stability of tunnel anchor. By uniaxial compression creep tests and long-term contact surface shear strength tests, we obtained rock rheological parameters. These parameters together with CVISC model in FLAC3D were integrated in the numerical simulation model of an engineering example. Results showed that in 100 years after the design, main cable force of tunnel anchor doubles, the anchor plug body, surrounding rock, and the contact surface between rock anchor plug body and surrounding rock has small long-term deformation, which meets the project’s design safety requirements. This research could be a reference for similar engineering studies.

Key words: tunnel anchor, long-term stability, uniaxial compression rheology, long-term shear strength of contact surface, anchor plug

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