To study the flow deformation characteristics of liquefied sand

the experiments on the fluid characteristics of liquefied sand were conducted. Based on the boundary layer theory

a test device for apparent viscosity of liquefied sand had been developed independently. The device

mainly composed of adjustable speed motor

motor speed regulator

cylindrical rotor

torque sensor and other components

can effectively measure the apparent viscosity of liquefied sand. The apparent viscosity of saturated sand

the friction torque of cylindrical rotor under different pore pressure ratios

and rotating speeds are studied

especially the apparent viscosity of liquefied sand. The results show that both in the pore pressure development before liquefaction and the pore pressure dissipation after liquefaction

the friction torque is affected by the pore pressure ratio and rotational speed. As the pore water pressure of liquefaction sand gradually dissipates

the strength recovers

and the flow capacity decreases as the apparent viscosity increases. There is a linear correlation between apparent viscosity and pore pressure ratio of the liquefaction sand. The apparent viscosity decreases as the shear strain rate increases. There is a power function relationship between the apparent viscosity and shear strain rate

showing that the liquefaction sand has the characteristics of typical power-law shear thinning non-Newtonian fluid.