RONG T L, REN X J, CHEN Z,et al.Coupling simulation analysis of ventilation and cooling in TBM tunneling roadway of deep mine[J].Journal of Henan Polytechnic University(Natural Science) ,2024,43(6):18-26.

Received:2023/07/13

Revised:2023/09/22

Online:2024-09-24

Coupling simulation analysis of ventilation and cooling in TBM tunneling roadway of deep mine

RONG Tenglong1,2, REN Xiaojian1, CHEN Zhao1, WANG Jiawei1, WANG Longfei1,2, LIU Pengju1

1.School of Energy Science and Engineering，Henan Polytechnic University，Jiaozuo  454000，Henan，China；2.Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization，Jiaozuo  454000，Henan，China

Abstract: Objectives Aiming at the high-temperature problem of deep roadways in tunnel boring machine（TBM） tunneling，Methods the non-isothermal flow coupling theory was constructed based on the k-ε  turbulence equation and fluid heat transfer equation to simulate the evolution of wind speed and temperature in the roadway. The effects of different air duct outlet wind speeds， different air duct outlet temperatures and different air duct positions on the ventilation and cooling process in the roadway were studied.  Results The results showed that the average wind speed in the roadway was essentially linear with the wind speed at the outlet of the air duct， and the ventilation and cooling effect of the air duct positioned at the top of the roadway was the most effective. The wind speed at the outlet of the air duct exhibited a negative exponential correlation with the roadway temperature， indicating that as wind speed increased， temperature decreased. Additionally， the outlet temperature of the air duct was linearly related to the average temperature of the roadway， with roadway temperature rising as the outlet temperature of the air duct increased. The polynomial relationship between the outlet wind speed and the outlet temperature of the air duct was determined for conditions when the tunneling face temperature was 26 °C and below.  Conclusions The research results provided a reference for addressing the high-temperature issues encountered in TBM tunneling deep roadways.

Key words:deep mine;TBM;tunneling roadway;ventilation and cooling;numerical simulation;influencing factors