The retical formula of diffusion parameters of Newtonian fluid based on column–hemispherical penetration grouting is not existence

such as

diffusion radius of hemispheroid

diffusion length belongs to cylinder etc; so it lag far behind the actual grouting engineering. In this study

according to combining with the rheological equation and seepage motion equation of Newtonian fluid

theory formula of diffusion radius of hemispheroid

diffusion length belongs to cylinder based on column–hemispherical penetration grouting were deduced. Relationships between some grouting factors and them based on cylindrical penetration grouting

such as

rheology of Newtonian fluid

grout pressure

groundwater pressure and water temperature of configuration cement

were analyzed theoretically. What’s more

they were validated by means of designing grouting verifying experiments. Experimental results show the theoretical diffusion radius of hemispheroid

diffusion length belongs to cylinder calculated by the formula of diffusion parameters of Newtonian fluid based on column-hemispherical penetration grouting have about 30% of the differences with the actual measurement diffusion radius by grouting experiments; but they are all within the acceptable error limits. Therefore

research achievements may not only provide strong theoretical basis for perfecting the penetration grouting mechanism

but also play a reference guiding role for the theoretical research

design and construction on grouting technique.