Vertical shaft rotational flow flood discharge tunnel

The invention discloses a vertical shaft rotational flow flood discharge tunnel, The vertical shaft rotational flow flood discharge tunnel comprises an inlet lock chamber section, an upper adit section, a volute chamber connecting section, a volute chamber, a vertical shaft and a lower adit section which are sequentially connected, wherein the bottom end of the volute chamber is connected with the vertical shaft through a transition section, a stilling well is arranged at the bottom end of the vertical shaft, and the lower part of the side wall of the vertical shaft is connected with the lower adit section through a connecting section; a flow dividing pier is arranged on a bottom plate of the volute chamber connecting section, and a flow guiding ridge is arranged on the inner side of the volute chamber. According to the vertical shaft rotational flow flood discharge tunnel, the regular water flow state, smooth ventilation and sufficient energy dissipation of the volute chamber of the vertical shaft rotational