海上风电桩基冲刷问题日益突出，固化土防护技术逐渐成为重要的防护措施。流态水泥固化土是水泥固化土的初期状态，其防冲刷机理尚不清晰，研究较为有限。本研究对OpenFOAM平台的多相流冲刷模型进行修正，提出黏聚力源项，引入随时间变化的流体固化土相的孔隙率、黏度和直径等参数，来研究流态水泥固化土在动水条件下的防冲刷行为。研究发现，流态水泥固化土颗粒间黏聚力和团聚作用提高了土体的抗冲刷能力，降低了颗粒和流体在交界面处的速度，有效抑制了冲刷过程的发展。在单桩基础固化土防护案例中，流态固化土防护工况的冲刷深度比无固化土工况小70.1%，冲刷直径减小48.6%。研究结果可为海上风电桩基的流态水泥固化土防冲刷研究提供参考。

Scour around offshore wind turbine monopile foundations is a growing concern, and solidified soil protection is increasingly recognized as a key countermeasure. Fluidized cement-solidified soil, the initial fluid state of this material, has not been thoroughly investigated, and its mechanism for scour resistance remains unclear. This study modifies a multiphase flow scour model in the OpenFOAM platform by introducing a cohesive force source term and incorporating time-varying parameters for the fluidized cement-solidified soil phase, such as porosity, viscosity, and particle diameter. The objective is to analyze the anti-scour behavior of fluidized cement-solidified soil under dynamic water conditions. Results indicate that cohesion and agglomeration between particles of fluidized cement-solidified soil enhance the soil's erosion resistance, reduce interfacial velocities between particles and fluid, and effectively inhibit scour progression. In a case study on a monopile foundation protected with this material, the maximum scour depth was reduced by 70.1% and the scour hole diameter by 48.6%, compared to the unprotected scenario. These findings provide a valuable reference for future research on the use of fluidized cement-solidified soil for scour protection in offshore wind turbine foundations.