The invention discloses an
osmotic pressure analysis method and device fusing model optimization and physical inversion and a medium, and the method comprises the steps: calculating correlation coefficients of a specified
reservoir water level and
osmotic pressure under different time lags based on cross-
correlation function analysis, and recognizing a differential nonlinear feature corresponding to the maximum
correlation coefficient; aiming at the differentiated nonlinear characteristics of different dam types, constructing a plurality of corresponding diagnosis prediction models in parallel, and establishing a
model selection decision rule to select an optimal diagnosis model; according to
delay parameters obtained through cross-
correlation analysis, a
permeability coefficient is reversely deduced through a pore medium
heat transfer diffusion theoretical formula; according to the regression slope and the theoretical value
attenuation factor of the optimal model, a
permeability coefficient is reversely deduced in combination with a correction
diffusion equation, credibility evaluation and weighted fusion are performed on the
permeability coefficient, and a comprehensive permeability coefficient is calculated; and diagnosing the
soil type and the permeability characteristic grade. According to the method, the
propagation delay characteristic of
reservoir water level change in the pore medium can be accurately quantified, and the inversion precision of the permeability coefficient and the
engineering applicability are improved.