Simulation analysis of pressure regulation of hydraulic thrust system on a shield tunneling machine

Abstract

Hydraulic thrust system is an important system in a shield tunneling machine. Pressure regulation of thrust cylinders is the most important function for thrust system during tunnel excavation. In this paper, a hydraulic thrust system is explained, and a corresponding simulation model is carried out in order to study the system characteristics. Pressure regulation of a certain group’s cylinders has little influence on regulation of the other groups’ cylinders. The influence will not affect the process much during tunnel excavation. Pump displacement may have a greater effect on pressure regulation and oil supply flow rate should be adaptive to the system’s demand. A exacting situation is simulated to explain how pressure regulation works during tunnel excavation.

Keywords

tunnel / hydraulic thrust system / pressure regulation / simulation

References

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Acknowledgments

This work was supported by the National Basic Research Program (973 Program) of China (Grant No. 2007CB714000) and the National High Technology Research and Development Program (863 Program) of China (Grant No. 2008AA042803). The authors would also like to thank the engineers in Xizi United Holding Corporation and Hongrun Construction Group for their help.

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg