Density current vertical line multipoint flow velocity monitoring method

The invention relates to the field of water conservancy engineering and specifically relates to a density current vertical line multipoint flow velocity monitoring method via which monitoring efficiency can be improved and branch back flow quantity monitoring precision can be improved while multiple points can be measured at the same time. First, a line integration box is arranged, and a plurality of propeller probes are mounted; then, a connection line of each propeller probe is extended outward from an upper end of the line integration box; the propeller probes and a flow velocity display device are connected, and a bottom end of the line integration box is extended into a monitoring zone and is monitored. According to the density current vertical line multipoint flow velocity monitoring method disclosed in the invention, water flow vertical line flow velocity monitoring efficiency and precision can be improved as the plurality of the propeller probes are used for measuring flow velocity of different points