• Yongfeng Li China Construction Third Engineering Bureau Installation Engineering Co.,Ltd
  • Guoqiang Liu
  • Jian Liu
  • Jing Huang
  • Fang Tian
  • Fan Liu



Large diameter pipe jacking, Utility tunnel, Launching of small spacing, Slurry system, Settlement control


Pipe jacking have been widely used in utility tunnel constructions as an environment-friendly method in China. This study is focus on the critical technologies used in the pipe jacking for the utility tunnel in Huanggang Mingzhu road. The inner and outer diameter of this utility tunnel are 4m and 4.8m respectively, which is the largest circular pipe jacking project in China at present. This utility tunnel is designed under the urban main road with a heavy traffic, so the control accuracy of pipe jacking construction is required to be high. According to the characteristics of the project and actual construction technical measures, the key construction technologies including pipe jacking equipment, launching of small spacing, slurry circulating, the drag reduction technology, and the control of surface settlement are discussed in this paper. Meanwhile, the jacking force and ground settlement during pipe jacking construction are monitored. The results show that the selected pipe jacking machine has good adaptability to the geological conditions of the project. The actual jacking force is much smaller than the theoretical value, and the two intermediate jacking stations are not activated. In addition, the road surface deformation is -8–5mm during the whole process of pipe jacking construction, which has no impact on surface traffic.


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How to Cite

Li, Y., Liu, G., Liu, J., Huang, J., Tian, F., & Liu, F. (2023). CASE STUDY ON THE LARGE DIAMETER PIPE JACKING FOR UTILITY TUNNEL. Stavební Obzor - Civil Engineering Journal, 32(1), 70–82.