压入式掘进通风流场测试

In order to study the flow field of the pressure in type tunneling ventilation,in this paper, the variation of the flow field of the pressure in the tunnel excavation is tested by the particle imaging test (PIV) technique.The experiment includes four parts: experimental principle, experimental methods and procedures, data processing and analysis of experimental results.The experimental results show that the PIV system can test the complex flow field more accurately, and the flow field of the instantaneous and time averaged flow state can be got, it provides the reliable experimental basis for pressing type tunneling ventilation flow field and research on characteristics of tunneling working surface sewage dust.