Analysis of anchoring mechanism of underground rockmass tunnel

LI Xin-ping; SONG Gui-hong; LIU Wei; PENG Yuan-ping

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Analysis of anchoring mechanism of underground rockmass tunnel

更新时间：2026-06-25

- Analysis of anchoring mechanism of underground rockmass tunnel
- Vol. 26, Issue S2, (2005)
- 作者机构：
  
  1. 武汉理工大学土木工程与建筑学院,武汉,430070
  2. 武汉市桥口区桥口市政工程总公司,武汉,430030
  3. 中国葛洲坝集团第五工程公司,湖北,宜昌,443002
- 作者简介：
- 基金信息：
- DOI：
  CLC： U45
- Online First：16 December 2005，
  
  Published：2005
- 稿件说明：
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LI Xin-ping, SONG Gui-hong, LIU Wei, et al. Analysis of anchoring mechanism of underground rockmass tunnel[J]. 2005, 26(S2).
DOI：

LI Xin-ping, SONG Gui-hong, LIU Wei, et al. Analysis of anchoring mechanism of underground rockmass tunnel[J]. 2005, 26(S2). DOI：

摘要

在工程实例中利用数值模拟方法对考虑和不考虑松动圈的岩体，在不同工况下锚杆加固前后的径向、环向应力，径向、环向位移以及锚杆轴向应力进行全面比较分析。研究锚杆和松动圈对隧洞围岩力学性质的影响，结果表明考虑和不考虑松动圈相比，洞室表面径向位移要明显大一些，而且外界载荷越大，二者的差值越大；在锚杆加固作用下环向应力峰值无论是否考虑松动圈，其出现位置都较加固前向洞壁方向移动，同时围岩径向位移在加固前后变化很大，随着外界载荷的增大，径向位移减小越明显。锚杆支护的主要作用之一是控制围岩的变形和发展，通过锚杆加固改善应力环境来提高围岩的稳定性。

Abstract

The underground tunnel anchoring mechanism is analyzed by using the numerical simulation method. In the case study

considering the existence and nonexistence of the loose loop

anchoring effect of the bolt on the wall rock mechanical properties is studied by analyzing the radial displacement and stress

the hoop displacement and stress of the wall rock and the axial stress of bolt. The radial displacement of the chamber surface in the loose loop model is larger than that in the no loose loop model. Under the action of the bolt

the place of peak value of the hoop stress is more approach the chamber wall. It indicated that one of the main functions is to control the displacement and bolt to enhance the stability of the wall rock through improving the stress state.

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Related Author

LI You1

BAI Shi-wei2

ZHU Wei-shen2

PENG Yi1 2 3

LU Xing-li

YOU Chun-an

SUN Feng

ZHAN Yu-bao

Related Institution

School of Civil Engineering and Architecture, Central South University

Institute of Rock and Soil Mechanics, Chinese Academy of Sciences

Research Center of Geotechnical and Structural Engineering, Shandong University

湖北武汉430071山东大学岩土与结构工程研究中心

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