Method for measuring sand content of strong tide estuary

The invention relates to the technical field of engineering detection, and discloses a strong tide estuary sand content determination method, which comprises: (1) collecting a plurality of suspended load samples in a complete tide period, determining the particle size, and drawing a hourly suspended load median particle size D50 process diagram in the complete tide period; (2) selecting a plurality of mixed suspended sand samples with different particle sizes, and determining the quantitative relationship between the turbidity and the sand content of each sample; (3) according to the results of the step (1) and the step (2), obtaining a calculation model of the turbidity and the sand content in the complete tide period; and (4) according to the actually measured time and the actually measured turbidity, calculating the sand content according to the turbidity by adopting the calculation model obtained in the step (3). A turbidity-sand content calculation model is established by adopting a particle size change