The side wall central section, the arch foots and the vault are key parts of the tunnel where should be strengthened to support.
隧道边墙中部、拱肩、拱顶是比较关键的部位，应加强支护。
This paper presents an investigation on the side wall effect in two -dimensional transonic wind tunnel with sidewall boundary layer suction around the model.
本文对模型周围的侧壁附面层抽吸，研究跨音速二元风洞的侧壁干扰。
The maximum vibration speed occurs at the radial direction of tunnel wall facing the blasting side, which can be regarded as the controlling vibration speed.
最大振动速度出现在迎爆侧边墙测点的径向方向，可将其作为爆破振动的控制速度；
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