[1]田皓天,俞缙,林聪波,等.节理岩体中大跨隧道围岩变形破坏模式分析[J].华侨大学学报(自然科学版),2025,(1):30-37.[doi:10.11830/ISSN.1000-5013.202405024]
　TIAN Haotian,YU Jin,LIN Congbo,et al.Analysis of Deformation and Failure Mode of Surrounding Rock of Long-Span Tunnel in Jointed Rock Mass[J].Journal of Huaqiao University(Natural Science),2025,(1):30-37.[doi:10.11830/ISSN.1000-5013.202405024]
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节理岩体中大跨隧道围岩变形破坏模式分析()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
期数:
2025年第1期
页码:
30-37
栏目:
出版日期:
2025-01-10

文章信息/Info

Title:
Analysis of Deformation and Failure Mode of Surrounding Rock of Long-Span Tunnel in Jointed Rock Mass
文章编号:
1000-5013(2025)01-0030-08
作者:
田皓天1;  俞缙1;  林聪波1;  王海猛2;  蔡浩慧2;  周玮2
1. 华侨大学 土木工程学院, 福建 厦门 361021;2. 中交第二航务工程局有限公司, 湖北 武汉 430000
Author(s):
TIAN Haotian1;  YU Jin1;  LIN Congbo1;  WANG Haimeng2;  CAI Haohui2;  ZHOU Wei2
1. College of Civil Engineering, Huaqiao University, Xiamen 361021, China; 2. China Communications Second Navigation Engineering Bureau Limited Company, Wuhan 430000, China
关键词:
隧道工程;  节理岩体;  离散元模拟;  围岩变形破坏;  大跨隧道
Keywords:
tunnel engineering;  jointed rock mass;  discrete element simulation;  deformation and failure of surrounding rock;  long-span tunnel
分类号:
U451.2
DOI:
10.11830/ISSN.1000-5013.202405024
文献标志码:
A
摘要:
运用3DEC离散元软件,建立含不同节理分布的大跨隧道模型。考虑节理的走向、倾角、间距和力学参数等因素,对大跨隧道开挖后无支护的围岩变形破坏情况进行模拟计算,并对大量计算结果进行分析。研究结果表明:大跨隧道围岩开挖后的风险部位主要由节理走向与倾角决定,该部位失稳及落块由节理间距和力学参数决定;当考虑双向组合节理时,围岩情况比单向节理更为复杂,隧道围岩的变形破坏形式不仅在横截面上呈现一定规律,并且在隧道轴向上也会有所差异;X向节理主要影响隧道横截面围岩变形破坏的位置,Y,Z向节理则会影响隧道轴线方向的围岩变形分布规律,并且节理倾角愈大,围岩松动范围愈深。
Abstract:
Using 3DEC discrete element software, a model of long-span tunnel with different joint distributions is established. Considering the strikes, dip angles, spacing and mechanical parameters of joints, the deformation and failure of surrounding rocks without support of the long-span tunnel after excavation is simulated and analyzed. The research results show that the risk position of the long-span tunnel surrounding rock after excavation is mainly determined by the strikes and dip angles of the joints. The instability and falling of blocks in this position are determined by the joint spacing and mechanical parameters. When considering the bidirectional combination joints, the surrounding rocks are more complex than the unidirectional joints. The deformation and failure forms of the tunnel surrounding rocks not only present a certain laws in the cross section, but also present difference in the tunnel axis. The X-direction joints mainly affect the deformation and failure location of the tunnel cross-section surrounding rocks, while the Y, Z-direction joints affect the deformation distribution laws of the tunnel axis direction, and the larger the joint dip angle, the deeper the surrounding rocks loosening ranges.

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备注/Memo

备注/Memo:
收稿日期: 2024-05-02
通信作者: 俞缙(1978-),男,教授,博士,博士生导师,主要从事岩土力学与地下工程的研究。E-mail:bugyu0717@163.com。
基金项目: 国家自然科学基金面上资助项目(52374090)https://hdxb.hqu.edu.cn/
更新日期/Last Update: 2025-01-20