高地应力软弱围岩隧道初期支护受力特性的现场监测研究

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (0 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要由于作用在初期支护上的围岩压力大，高地应力软弱围岩隧道开挖后经常出现围岩大变形、喷混凝土开裂、钢架扭曲等破坏现象，影响隧道的施工和长期运营安全。依托宜万铁路堡镇隧道，通过对围岩压力、初期支护喷混凝土应力、钢架应力、锚杆轴力和围岩深部位移等的现场监测，得到围岩压力与初期支护体系各子构件的力学特性，讨论其随时间的演化特性和沿隧道横断面的空间分布规律，指出围岩压力、钢架应力、喷混凝土应力随开挖进程存在急剧变化阶段，受施工扰动的影响显著，敏感性依次降低，沿洞周分布总体表现出“上部大，下部小”等特征。研究方法和结论为建立科学合理的高地应力软弱围岩隧道支护结构设计方法具有一定的指导和借鉴意义。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：隧道工程, 软弱围岩, 现场监测, 力学特征, 高地应力

Abstract：Peripheral rock large deformation，shotcrete crack，steel frame distortion and other phenomenon of destruction often appear in the tunnels with soft rock and high geostress due to the high pressure on the primary lining. The safety of tunnel during construction and long-term operation will be affected. Taking Baozheng tunnel along Yiwan Railway as engineering background，based on statistical analysis of in-situ monitoring data，mechanical characteristics of surrounding rock pressure，stress of shotcrete and steel arch，axial force of bolts and deformation distribution of deep seated rock have been analyzed. Development law over time and spatial distribution along the tunnel ring of the above test items are discussed. During the excavation in the tunnel，rock pressure，steel arch stress and shotcrete stress change rapidly，and sensitivity decreases in turn with the character “upper larger，lower smaller” along the tunnel cross section. The analytical method and results can provide references to accurately understand the support-surrounding rock interaction and their mechanical characters.

Key words： tunneling engineering weak surrounding rock in-situ monitor mechanical characteristics high grostress

收稿日期: 2012-06-14

引用本文:

李鹏飞1，2，3，田四明2，赵勇2，朱永全4，王树栋4. 高地应力软弱围岩隧道初期支护受力特性的现场监测研究[J]. 岩石力学与工程学报, 2013, 32(s2): 3509-3519.
LI Pengfei1，2，3，TIAN Siming2，ZHAO Yong2，ZHU Yongquan4，WANG Shudong4. IN-SITU MONITORING STUDY OF MECHANICAL CHARACTERISTICS OF PRIMARY LINING IN WEAK ROCK TUNNEL WITH HIGH GROSTRESS. , 2013, 32(s2): 3509-3519.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2013/V32/Is2/3509

[1]	房倩. 高速铁路隧道支护围岩作用关系研究[博士学位论文][D]. 北京：北京交通大学，2010.(FANG Qian. Study on support- surrounding rock interaction for PDL tunnel[Ph. D. Thesis][D]. Beijing：Beijing Jiaotong University，2010.(in Chinese)) " target="_blank">
[2]	李鹏飞，张顶立，赵勇，等. 大断面黄土隧道二次衬砌受力特性研究[J]. 岩石力学与工程学报，2010，29(8)：1 690-1 696.(LI Pengfei，ZHANG Dingli，ZHAO Yong，et al. Study on mechanical characteristics of secondary lining of large-section loess tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(8)：1 690-1 696.(in Chinese)) " target="_blank">
[3]	郭富利. 堡镇软弱围岩隧道大变形机制及控制技术研究[博士学位论文][D]. 北京：北京交通大学，2009.(GUO Fuli. Research on large deformation mechanism of soft rock on Baozhen tunnel[Ph. D. Thesis][D]. Beijing：Beijing Jiaotong University，2009.(in Chinese)) " target="_blank">
[4]	来弘鹏，谢永利，杨晓华. 黄土公路隧道受力特性测试[J]. 长安大学学报：自然科学版，2005，25(6)：53-57.(LAI Hongpeng，XIE Yongli，YANG Xiaohua. Mechanical characteristic of highway tunnel in loess[J]. Journal of Chang?an University：Natural Science，2005，25(6)：53-57.(in Chinese)) " target="_blank">
[5]	赵占厂，谢永利，杨晓华，等. 黄土公路隧道衬砌受力特性测试研究[J]. 中国公路学报，2004，17(1)：66-69.(ZHAO Zhanchang，XIE Yongli，YANG Xiaohua，et al. Observation research on the mechanical characteristic of highway tunnel lining in loess[J]. China Journal of Highway and Transport，2004，17(1)：66-69.(in Chinese))
[6]	徐林生. 大断面高速公路隧道复合式衬砌结构受力监测分析[J]. 重庆大学学报：自然科学版，2009，28(3)：528-530.(XU Linsheng. Mechanical monitoring and analysis on composite lining structure of highway tunnel with large cross section[J]. Journal of Chongqing Jiaotong University：Natural Science，2009，28(3)：528-530.(in Chinese)) " target="_blank">
[7]	谭忠盛，喻渝，王明年，等. 大断面深埋黄土隧道锚杆作用效果的试验研究[J]. 岩石力学与工程学报，2008，27(8)：1 618-1 625. (TAN Zhongsheng，YU Yu，WANG Mingnian，et al. Experimental research on bolt anchorage effect on large-section deep-buried tunnel in loess[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(8)：1 618-1 625.(in Chinese)) " target="_blank">
[8]	李元松，李新平，代冀飞. 隧道围岩压力与衬砌体受力特性原位测试[J]. 武汉化工学院学报，2006，28(2)：39-42.(LI Yuansong，LI Xinping，DAI Yifei. Site testing of the pressure of surrounding rock mass and the mechanics property of tunnel shoring system[J]. Journal of Wuhan Institute of Chemical Technology，2006，28(2)：39-42.(in Chinese)) " target="_blank">
[9]	王树栋. 复杂地应力区隧道软弱围岩大变形控制技术研究[博士学位论文][D]. 北京：北京交通大学，2010.(WANG Shudong. Research on large deformation control technique of soft surrounding rock in complex crustal stress tunnel[Ph. D. Thesis][D]. Beijing：Beijing Jiaotong University，2010.(in Chinese)) " target="_blank">
[10]	中华人民共和国行业标准编写组. TB 10003—2005铁路隧道设计规范[S]. 北京：中国铁道出版社，2005.(The Professional Standards Compilation Group of People?s Republic of China. TB 10003—2005 Code for design on tunnel of railway[S]. Beijing：China Railway Publishing House，2005.(in Chinese)) " target="_blank">
[11]	赵勇，刘建友，田四明. 深埋隧道软弱围岩支护体系受力特征的试验研究[J]. 岩石力学与工程学报，2011，30(8)：1 663-1 670. (ZHAO Yong，LIU Jianyou，TIAN Siming. Experimental study of mechanical characteristics of support system for weak surrounding rock of deep-buried tunnels[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(8)：1 663-1 670.(in Chinese)) " target="_blank">