Study On The Use Of The Inclined Shaft,the Shaft And The Natural Ventilation In Lingshan Highway Tunnels

With the large number of constructions of the long highway tunnels, the role of theinclined shaft and the shaft are more and more important. On one hand, they increasetunnel working faces to accelerate the construction schedule. On the other hand, theywork as ventilation ducts and escape ways during the operation period of the tunnels.However, we rarely study on how to integratly use them.In view of this, based on Lingshan highway construction, this paper puts forward u-sing analytic hierarchy process (AHP) to evaluate the comprehensive benefit of inclin-ed shafts after summing up the role of inclined shafts. Besides, this paper related to t-he actual situation about inclined shafts in the Lingshan highway tunnels, and evaluat-ed them.During the operation period of the long road tunnel, in order to improve the safetyand comfort, we usually put the fresh air into it by a certain mechanical way. At pre-sent, for the short tunnel, we adopt the natural ventilation. But the research about ho-w to combine natural ventilation and mechanical ventilation in order to satisfy the re-quirement of tunnel ventilation design is very little research in the less traffic or theimport and export of static pressure difference or hot head tunnel. Therefore, the auth-or discussed the application of natural ventilation, and put forward how to build the n-atural ventilation shaft. Besides, combined with the application of natural ventilation i-n Lingshan highway that in the three tunnels we set up eight small natural ventilatio-n shafts, I evaluated the effect on operating ventilation through the field test. Also, Ifocused on the ventilation of the Qiangfengling tunnel to research how to use the nat-ural ventilation to save energy.