Journal of Shandong University(Engineering Science) ›› 2020, Vol. 50 ›› Issue (6): 92-100.doi: 10.6040/j.issn.1672-3961.0.2020.277

Previous Articles    

Analysis of pipe roof grouting reinforcement effect at tunnel entrance in loose stratum

YU Jun1, WENG Xianjie2, FAN Wensheng3, ZHANG Lianzhen4   

  1. 1. Jiangxi Province Traffic Construction Engineering Quality Supervision Administration, Nanchang 330008, Jiangxi, China;
    2. Jiangxi Traffic Consulting Company, Nanchang 330008, Jiangxi, China;
    3. Yichun Management Center, Jiangxi Provincial Expressway Investment Group Co., Ltd, Yichun 336000, Jiangxi, China;
    4. College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao 266580, Shandong, China
  • Published:2020-12-15

PDF (PC)

264

Abstract: Based on Lianhua Tunnel in Pinglian Express Way, three-dimensional calculation model was established to study excavation stability considering pipe roof grouting reinforcement effect. Effect of different pipe roof grouting parameters on excavation stability was analyzed quantitatively, such as mechanical parameters of grouted body, pipe roof interval, grouting radius. In the end, numerical simulation results were used and verified in engineering project. Research results showed that there existed plastic failure zone at vault and region below tunnel face. Pipe roof grouting method had effect on limiting deformation of surrounding rock, reducing volume strain of surrounding rock and cutting off connection between plastic failure zone on vault and tunnel. In whole affected area of pipe roof grouting, maximum settlement of pipe roof settlement appeared around tunnel face. Maximum settlement of pipe roof settlement was negatively related with elastic modulus of grouted body and grouting radius, positively related with pipe roof interval. However, influence level of pipe roof interval was lower than elastic modulus of grouted body or grouting radius.

Key words: rock and soil mechanics, loose stratum, tunnel, pipe roof grouting, reinforcement effect

CLC Number: 

  • TU45
[1] 李术才,张伟杰,张庆松,等. 富水断裂带优势劈裂注浆机制及注浆控制方法研究[J]. 岩土力学, 2014,35(3): 744-752. LI Shucai, ZHANG Weijie, ZHANG Qingsong, et al. Research on advantage-fracture grouting mechanism and controlled grouting method in water-rich fault zone[J]. Rock and Soil Mechanics, 2014, 35(3):744-752.
[2] 张伟杰,李术才,魏久传,等. 富水破碎岩体帷幕注浆模型试验研究[J]. 岩土工程学报, 2015, 37(9): 1627-1634. ZHANG Weijie, LI Shucai, WEI Jiuchuan, et al. Model tests on curtain grouting in water-rich broken rock mass[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(9): 1627-1634.
[3] 钱七虎. 地下工程建设安全面临的挑战与对策[J]. 岩石力学与工程学报, 2012, 31(10): 1945-1956. QIAN Qihu. Challenges faced by underground projects construction safety and countermeasures[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(10): 1945-1956.
[4] 耿大新,石钰锋,阳军生,等. 浅覆大断面隧道长大管棚超前支护受力研究[J]. 华中科技大学学报(自然科学版), 2016, 44(6): 98-103. GENG Daxin, SHI Yufeng, YANG Junsheng, et al. Research on forepoling force of long and large pipe roof for shallow tunnel large section under existing highway[J]. Journal of Huazhong University of Science and Technology.(Natural Science Edition), 2016, 44(6): 98-103.
[5] 伍振志,傅志锋,王静,等. 浅埋松软地层开挖中管棚注浆法的加固机理及效果分析[J]. 岩石力学与工程学报, 2005, 24(6): 1025-1029. WU Zhenzhi, FU Zhifeng, WANG Jing, et al. Study of support mechanism and effect of shed-pipe grouting technology for tunneling construction in shallow-buried soft stratum[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(6): 1025-1029.
[6] 张龙生,翁贤杰. 富水软弱围岩隧道塌方机理及治理技术研究[J]. 中外公路, 2017, 37(1): 173-179. ZHANG Longsheng, WENG Xianjie. Research on collapse mechanism and control technology of tunnel in water-rich and soft stratum[J]. Journal of China & Foreign Highway, 2017, 37(1): 173-179.
[7] 陈峥,何平,颜杜民,等. 考虑土拱效应的管棚合理间距计算方法[J]. 岩土力学, 2019, 40(5): 1993-2000. CHEN Zheng, HE Ping, YAN Dumin, et al. A method to calculate rational spacing between pipes in pipe roofs considering soil arching effects[J]. Rock and Soil Mechanics, 2019, 40(5): 1993-2000.
[8] 高红杰,何平,陈峥. 深埋非对称连拱隧道过程荷载计算方法研究[J]. 岩土工程学报, 2020, 42(6): 1059-1066. GAO Hongjie, HE Ping, CHEN Zheng. Calculation of process load of deep-buried asymmetric multi-arch tunnels[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(6): 1059-1066.
[9] 满帅,孔超,王海彦. 隧道洞口浅埋段管棚超前支护开挖进尺优化[J]. 铁道标准设计, 2013(10): 108-111. MAN Shuai, KONG Chao, WANG Haiyan. Optimization of Excavation Footage of Shallowly-buried Section of Tunnel Portal Supported by Advance Pipe Roof[J]. Railway Standard Design, 2013(10): 108-111.
[10] 郭璇,张鸿儒,蒙蛟,等. 软弱围岩隧道管棚预支护开挖土压分布模型试验[J]. 岩石力学与工程学报, 2016, 35(6): 1214-1224. GUO Xuan, ZHANG Hongru, MENG Jiao, et al. Model test to earth pressure distribution on pipe roof of tunnels as pre-supporting system in weak surrounding rock[J]. Chinese Journal of Rock Mechanics and Engineering, 2016, 35(6): 1214-1224.
[11] 郭璇,张晓新,王梦恕. 弧形侧向抗力法的力法推导及例证[J]. 岩石力学与工程学报, 2015, 34(增刊2): 4080-4090. GUO Xuan, ZHANG Xiaoxin, WANG Mengshu. Derivation and validation of structural mechanics force method for sinusoidal curve lateral resistance method in tunnelling lining[J]. Chinese Journal of Rock Mechanics and Engineering, 2015, 34(Suppl.2): 4080-4090.
[12] 张明聚,林毅,黄明琦,等. 厦门翔安隧道洞口段管棚设计与施工[J]. 北京工业大学学报, 2007, 33(10): 1056-1059. ZHANG Mingju, LIN Yi, HUANG Mingqi, et al. Degisn and construction of pipe roof at entrance of Ximen Xiangan tunnel[J]. Journal of Beijing University of Technology, 2007, 33(10): 1056-1059.
[13] 孙志杰,申俊敏. 隧道洞口段不同围岩刚度下管棚的支护效果分析[J]. 华北水利水电学院学报, 2013, 34(6): 25-28. SUN Zhijie, SHEN Junmin. Support effect of pipe roof at tunnel entrance at different stiffness of surrounding rock[J]. Journal of North China Institute of Water Conservancy and Hydroelectric Power, 2013, 34(6): 25-28.
[14] 苟德明,阳军生,高世军. 下穿公路连拱隧道双层管棚预加固作用数值分析[J]. 长沙交通学院学报, 2008, 24(2): 16-22. GOU Deming, YANG Junsheng, GAO Shijun. Numerical analysis of pre-reinforcement action about double-layer pipe roof in multi arch tunnel under the existing highway[J]. Journal of Changsha Communications University, 2008, 24(2): 16-22.
[15] 董敏,董明星,阳军生. 下穿既有高速公路下隧道施工双层管棚对土层加固作用有限元数值分析[J]. 公路工程, 2014, 39(3): 284-289. DONG Min, DONG Mingxing, YANG Junsheng. Numerical Analysis of Finite Element for Double-deck Pipe Shed's Reinforcement for Soil Layer in Tunnel Construction under Expressway[J]. Highway Engineering, 2014, 39(3): 284-289.
[16] 钟放平. 下穿既有公路的土江冲隧道双层管棚设计及监测分析[J]. 现代隧道技术, 2007, 44(4): 36-40. ZHONG Fangping. Double-layer pipe roofing design and monitoring for Tujiangchong tunnel under-crossing an existing highway[J]. Modern Tunnelling Technology, 2007, 44(4): 36-40.
[1] CHEN Yucheng, WANG Zhaoyang, GUO Ming, LIN Peng. Influence of concealed karst cave on surrounding rock stability and its treatment technology [J]. Journal of Shandong University(Engineering Science), 2020, 50(5): 33-43.
[2] WANG Chunguo. Mechanical behavior of large-span and small spacing road tunnel with biased pressure [J]. Journal of Shandong University(Engineering Science), 2020, 50(4): 85-89.
[3] SHI Xuesong, GUAN Qingzheng, WANG Wenyang, XU Zhenhao, LIN Peng, WANG Xiaote, LIU Jie. Numerical simulation of rock fragmentation process by TBM cutter in double-joint rock mass [J]. Journal of Shandong University(Engineering Science), 2020, 50(4): 70-79.
[4] Mingcai LIU. Impact analysis on construction of large section and small spacing road tunnel [J]. Journal of Shandong University(Engineering Science), 2019, 49(4): 78-85.
[5] ZHOU Chenying. Image analysis and engineering application of ground penetrating radar in tunnel lining detection [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2018, 48(4): 61-68.
[6] SONG Guijie. Deformation characteristic and instability analysis for shallow soft rock section during tunnel-entering construction [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2018, 48(2): 53-60.
[7] LIU Jifeng, YANG Huanhuan. Risk control of extremely close twin shield tunnels nearby passing intensive buildings based on informative construction [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2017, 47(3): 102-111.
[8] BAI Xianjun, WANG Taixing, WEI Xin, ZHAO Wusheng. Effect of the velocity pulse on the seismic response of the tunnel [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2017, 47(2): 14-19.
[9] ZHOU Lun, LI Shucai, XU Zhenhao, LI Liping, HUANG Xin, HE Shujiang, LI Guohao. Integrated advanced geological prediction technology of tunnel and its engineering application [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2017, 47(2): 55-62.
[10] WAN Li, WANG Chunhe, WANG Qi, LI Shucai, SHAO Xing, JIANG Bei, SUN Huibin, QIN Qian. The control mechanism for super section tunnel on weak surrounding rock and its application [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2017, 47(1): 59-67.
[11] BAO Jianye, WANG Jing. Prediction of flow rate during tunnel excavation based on discrete fracture network models [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2016, 46(6): 127-134.
[12] SUN Keguo, QIU Wenge, WANG Zhongping, GAO Xiaoyan, GONG Lun, KONG Chao. Study on approaching excavation influence between expanding projects of expressway and high speed railway tunnel under operation state [J]. Journal of Shandong University(Engineering Science), 2015, 45(5): 70-76.
[13] GAO Zhijun, CUI Xinzhuang, SUI Wei, GUO Hong, LIU Hang, LI Changyi, FENG Hongbo. Dynamic interaction and damage analysis of large runaway vehicle and tunnel lining [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2014, 44(5): 49-57.
[14] ZHOU Qian, ZHAO Degang. Application of the horizontal jet grouting pile in water-bearing sandy layer of shallow excavating tunnel [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2014, 44(4): 52-57.
[15] ZHOU Luan-ai1, TANG Wen-zuo2, CUI Xiao-hua3, SUI Hui-bin4*. null [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2013, 43(6): 83-88.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
Copyright 2018 © Editorial office of Journal of Shandong University (Engineering Science)
Supported by Beijing Magtech Co.Ltd