Study on Surrounding Rock Classification and Supporting Systems of TBM Tunnels（TBM隧洞围岩分级方法及支护体系研究）

doi:10.3973/j.issn.2096-4498.2024.02.001

中国科学引文数据库（CSCD）来源期刊
中文核心期刊中文科技核心期刊
Scopus RCCSE中国核心学术期刊
美国EBSCO数据库俄罗斯《文摘杂志》
《日本科学技术振兴机构数据库（中国）》

隧道建设（中英文） ›› 2024, Vol. 44 ›› Issue (2): 205-224.DOI: 10.3973/j.issn.2096-4498.2024.02.001

Study on Surrounding Rock Classification and Supporting Systems of TBM Tunnels（TBM隧洞围岩分级方法及支护体系研究）

邓铭江1，谭忠盛2, *

（1. 新疆水利发展投资（集团）有限公司，新疆乌鲁木齐 830000；2. 北京交通大学城市地下工程教育部重点实验室，北京 100044）

出版日期:2024-02-20 发布日期:2024-03-11
作者简介:邓铭江(1960—),男,新疆库尔勒人,1982年毕业于新疆农业大学,水利水电工程专业,博士,教授级高级工程师,中国工程院院士,主要从事水利工程建设和水资源研究工作。 E-mail: xjdmj@163.com。*通信作者：谭忠盛， E-mail： zhshtan@bjtu.edu.cn。

Study on Surrounding Rock Classification and Supporting Systems of TBM Tunnels

DENG Mingjiang1, TAN Zhongsheng2, *

(1. Xinjiang Water Conservancy Development Investment (Group) Co., Ltd., Urumqi 830000, Xinjiang, China; 2. Key Laboratory for Urban Underground Engineering of Ministry of Education, Beijing Jiaotong University, Beijing 100044, China)

Online:2024-02-20 Published:2024-03-11

摘要/Abstract

摘要： 目前TBM隧洞设计施工主要采用基于矿山法的围岩分级方法，但由于TBM法与矿山法隧洞施工存在很大差异，传统矿山法的围岩分级方法难以适用于TBM施工。为解决该问题，依托北疆供水二期工程，综合考虑围岩稳定性和围岩可掘性，选取围岩基本质量指标BQ、岩石单轴饱和抗压强度Rc、岩体完整性系数KV和岩石磨蚀性指数CAI作为评价隧洞围岩性质的主要指标，统计18台TBM集群施工收集的近3 000组BQ、Rc、KV等岩性指标数据，分析各项岩性指标与纯掘进速度PR及安全系数FS的变化规律，将TBM隧洞围岩分为Ⅰ~Ⅴ级共10个亚级。在此基础上，分析了敞开式TBM的施工特性，进而采用数值模拟方法，对各级围岩在不同支护参数下的稳定性进行对比分析，提出了适用于北疆地区水工隧洞各级围岩的隧洞支护体系及支护参数，共形成7套支护体系设计图，并结合现场实际工程对本文提出的围岩分级支护体系进行验证。现场监测数据表明，本文提出的TBM隧洞围岩分级支护体系有较好的适用性。

关键词: TBM隧洞, 围岩分级, 大变形, 岩爆, 支护体系, 支护参数

Abstract:

At present, the classification of the surrounding rocks based on the mining method is mainly adopted for the design and construction of TBM tunnels. Due to the great difference between the TBM method and the mining method, however, the classification of the surrounding rocks based on the mining method is not suitable for the construction of TBM tunnels. In this study, the surrounding rock classification and supporting systems of the TBM tunnels of the Water Supply Phase Ⅱ Project in North Xinjiang in China are studied: the basic quality index of the surrounding rocks (BQ), the saturated uniaxial compressive strength of the rock (〖WT５ＢＸ〗R〖ＷＴ〗〖WT５《TNR》〗c), the intactness factor of the rock mass (〖ＷＴ５ＢＸ〗K〖ＷＴ〗〖WT５《TNR》〗V), and Cerchar abrasiveness index (CAI) are taken as the main indices to evaluate the properties of the surrounding rocks of the TBM tunnels, and the statistics of nearly 3 000 sets of lithologic index data including BQ, 〖WT５ＢＸ〗R〖ＷＴ〗〖WT５《TNR》〗c, and 〖ＷＴ５ＢＸ〗K〖ＷＴ〗〖WT５《TNR》〗V in the tunneling of 18 TBMs are collected, with comprehensive consideration of the stability and boreability of the surrounding rocks; the rules of the variation of the net progress rates PR and the safety factors 〖ＷＴ５ＢＸ〗F〖ＷＴ〗〖WT５《TNR》〗S along with each lithologic index are analyzed, and the surrounding rocks of the TBM tunnels are classified in to Class Ⅰ, Class Ⅱ, Class Ⅲ, Class Ⅳ, and Class Ⅴ and are further classified in to ten subclasses; on this basis, the tunneling features of open TBMs are analyzed, the stability of the surrounding rocks of each class under different supporting parameters is analyzed by means of numerical simulation, the supporting systems and supporting parameters applicable to the hydraulic tunnels with different classes of surrounding rocks in North Xinjiang are proposed, and a total of seven sets of design drawings for the supporting systems are formed; the surrounding rock classification and the supporting systems proposed herein are verified in the actual field works, and the field monitoring data show that the surrounding rock classification and the supporting systems proposed for the TBM tunnels have high applicability.

Key words: TBM tunnel, surrounding rock classification, large deformation, rockburst, supporting system, supporting parameters

邓铭江, 谭忠盛. Study on Surrounding Rock Classification and Supporting Systems of TBM Tunnels（TBM隧洞围岩分级方法及支护体系研究）[J]. 隧道建设, 2024, 44(2): 205-224.

DENG Mingjiang, TAN Zhongsheng.

Study on Surrounding Rock Classification and Supporting Systems of TBM Tunnels [J]. Tunnel Construction, 2024, 44(2): 205-224.

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Study on Surrounding Rock Classification and Supporting Systems of TBM Tunnels（TBM隧洞围岩分级方法及支护体系研究）

Study on Surrounding Rock Classification and Supporting Systems of TBM Tunnels

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