本文采用了五孔毕托球结合压力传感器，通过微机自动的采样和处理，设计了一套可施测三元流场的测试系统，并测试了一大比尺模型的多股水舌入射水垫塘塘内的三元流态，首次得到水垫塘水流流态的概化图，揭示了多股水看入射水垫塘形成的塘内复杂的流态特征，并将其流态特征归类为三个区：水舌入射区，螺旋流区和扩散区，并对每个流区作了分析。 In this paper, a five-hole Biot ball combined with pressure sensor was used to design and test a test system that can detect ternary flow field by computerized automatic sampling and processing. For the first time, the generalized figure of the water flow pattern in the plunge pool was revealed, revealing the complicated flow pattern in the pond formed by the water plunge pool formed by multiple strands of water, and the characteristics of the fluid state as Three zones: water tongue incidence zone, spiral flow zone and diffusion zone, and analyzed each flow zone.