Railway tunnel portal assistance system capable of reducing sudden airflow change

• Main Authors: NIU YANHUI, FANG JIANWU, LI XU, XIA HUIYUN, SONG LIFANG, AI TAO
• Format: Patent
• Language: Chinese; English
• Published: 05.11.2021
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

The invention discloses a railway tunnel portal assistance system capable of reducing sudden airflow change. The railway tunnel portal assistance system comprises an inlet resistance and noise reduction structure arranged at a tunnel inlet and an outlet resistance and noise reduction structure arranged at a tunnel outlet; the inlet resistance and noise reduction structure comprises a plurality of layers of inlet arch structures which are arranged outwards from the tunnel inlet; each layer of inlet arch structure comprises a plurality of inlet guide plates which are distributed in the circumferential direction; the outlet resistance and noise reduction structure comprises multiple layers of outlet arch structures arranged outwards from the tunnel outlet; and each layer of outlet arch structure comprises multiple outlet guide plates distributed in the circumferential direction. The technical scheme has the following beneficial effects that 1, the diameter of a space channel formed by the guide plates at the tun