<p>The extensive application of mineral admixtures and additives has revealed that when the shear rate increases, the shear rate-shear stress curve of some fresh wet shotcrete materials increasingly diverges from a linear relationship. Previous studies on pressure loss in wet shotcrete employed the Bingham model to characterize the rheological behavior of the lubricating layer and concrete. When fresh wet shotcrete displays nonlinear rheological characteristics, there is a notable deviation in the predictive model of pumping pressure loss. This study addresses this deficiency by extending analytical predictions of pumping pressure loss in wet shotcrete to encompass nonlinear rheological models, including the Herschel–Bulkley (H–B) model and the Modified Bingham (M–B) model. The experimental test of wet shotcrete pumping is conducted to validate the feasibility of the proposed model. The investigation indicated that at a lubricating layer thickness of 3&#xa0;mm, the pumping pressure loss predicted by the H–B model in shear flow mode agrees well with the experimental data within the range of the tested mixtures, but the M–B model exhibits considerable inaccuracies. This study offers theoretical and technological support for advancing research on wet shotcrete pumping technology, which will help promote the promotion and application of wet shotcrete</p>