Research Status and Highstrength Prestressed Primary (type)（挤压大变形隧道研究现状及高强预应力一次（型）支护体系）

doi:10.3973/j.issn.2096-4498.2020.06.001

隧道建设（中英文） ›› 2020, Vol. 40 ›› Issue (6): 769-782.DOI: 10.3973/j.issn.2096-4498.2020.06.001

Research Status and Highstrength Prestressed Primary (type)（挤压大变形隧道研究现状及高强预应力一次（型）支护体系）

李志军¹，郭新新^2，*，马振旺³，杨铁轮⁴，徐建强⁵

（1.中铁隧道集团二处有限公司，河北三河 065201；2.西南交通大学交通隧道工程教育部重点实验室，四川成都 610031；3.中设设计集团股份有限公司，江苏南京 210014；4.甘肃长达路业有限责任公司，甘肃兰州 730030；5.中国电建集团华东勘测设计研究院有限公司，浙江杭州 311122）

出版日期:2020-06-20 发布日期:2020-06-29
作者简介:李志军（1975—），男，四川洪雅人，2000年毕业于兰州铁道学院，铁道工程专业，本科，教授级高级工程师，从事隧道与地下工程施工技术管理工作。 E-mail： 1270076106@qq.com。 *通信作者：郭新新， E-mail: zj_gxinxin@163.com。
基金资助:
甘肃省科技计划资助（19ZD2GA005）

Research Status and Highstrength Prestressed Primary (type)

LI Zhijun¹, GUO Xinxin^{2， *}, MA Zhenwang³, YANG Tielun⁴, XU Jianqiang⁵

(1. The 2nd Engineering Co., Ltd. of China Railway Tunnel Group, Sanhe 065201, Hebei, China; 2. Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; 3. China Design Group Co., Ltd., Nanjing 210014, Jiangsu, China; 4. Gansu Changda Highway Co., Ltd., Lanzhou 730030, Gansu, China; 5. POWERCHINA Huadong Engineering Corporation Limited, Hangzhou 311122, Zhejiang, China)

Online:2020-06-20 Published:2020-06-29

摘要/Abstract

摘要： 大变形是现今隧道工程的重点难题。分析国内外大变形的定义、分类与机制、判定标准、控制理论与措施等，对隧道围岩大变形进行细致梳理与归纳总结。阐述挤压大变形的控制思路，提出尽可能发挥支护体系提升与改善围岩承载能力的作用，而非仅被动地承载；探讨现今挤压大变形的重点研究方向与突破点；提出高强预应力一次（型）支护体系，并介绍其组成及相应的关键点，强调“预应力”在整个支护体系中的核心地位；最后，通过现场试验验证所提出的高强预应力一次（型）支护体系可较好地控制挤压大变形围岩的位移，并缩短变形稳定时间。

关键词: 隧道工程, 围岩大变形, 支护理论, 支护体系, 预应力锚索

Abstract: Large deformation is a key problem in tunnel engineering. In this paper, the definition, classification and mechanism, judgment criteria, control theory and measures for large deformation of surrounding rock in China and abroad are analyzed and summarized. Meanwhile, the control philosophy of large squeezing deformation is introduced, and suggestion that full play should be paid to the role of the support system in improving the loadbearing capacity of the surrounding rock as much as possible rather than passive loadbearing is put forward. Furthermore, the key research trend and breakthrough point of the large squeezing deformation are discussed, and the highstrength prestressed primary (type) support system and its components and key points are proposed by emphasizing its core importance in the support system. Finally, it is verified by means of field test that the proposed highstrength prestressed primary (type) support system can better control the displacement of the large deformation surrounding rock and shorten the time for the deformation to become stable. The research results can provide a feasible new concept and support technology system for the contorl of the large deformation of tunnels of the same type.

Key words: tunnel, surrounding rock large deformation, support theory, support system, prestressed anchor

中图分类号:

U 45

李志军, 郭新新, 马振旺, 杨铁轮, 徐建强. Research Status and Highstrength Prestressed Primary (type)（挤压大变形隧道研究现状及高强预应力一次（型）支护体系）[J]. 隧道建设, 2020, 40(6): 769-782.

LI Zhijun, GUO Xinxin, MA Zhenwang, YANG Tielun, XU Jianqiang. Research Status and Highstrength Prestressed Primary (type)[J]. Tunnel Construction, 2020, 40(6): 769-782.

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Research Status and Highstrength Prestressed Primary (type)（挤压大变形隧道研究现状及高强预应力一次（型）支护体系）

Research Status and Highstrength Prestressed Primary (type)

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