Abstract: Focused on the impact of vibration produced by the tunnel boring machine(TBM) tunneling process on the performance of the proportional flow control valve, the selection criteria of proportional flow control valve on the fundamental vibration is proposed. The simulation model is established based on the operating principle of proportional flow control valve, and experimentally verified. The influences of fundamental vibration parameters on flow fluctuation characteristics are researched. Determined the normal work area of proportion control valve as the standard of 10% flow deviation, the selection process of TBM proportional flow control valve is put forward. The results indicate that fundamental vibration causes the valve flow fluctuations and leads to the failure performance of proportional flow control valve; new selection process meets to TBM proportional control valve actual engineering requirements.

Key words: fundamental vibration, proportional flow control valve, selection process, simulation model