Force Analysis During Deep Mixing Pile Drilling in Sandy Soil Layers
To investigate the force acting on the drilling tool during the process of deep mixing pile drilling in sandy soil layers,an analysis of the movement trajectory of the tool blades cutting and mixing the soil layers,as well as the axial resistance and torque during the drilling process,is conducted.Using PFC3D software,a simulation model of the drilling tool and the foundation sandy soil is constructed.Different drilling speeds and rotation speeds are applied to monitor and analyze particle displacement,axial resistance endured by the drill bit,and resistance torque.Finally,the actual observations of the deep mixing process in the sandy soil layers during the foundation waterproofing project of a drainage pump station are compared with simulation results.The high degree of conformity validates the accuracy of the simulation results.The analysis findings of this study can provide valuable insights for the optimal application of deep mixing piles in geological conditions involving sandy soil layers.
deep mixing pilesandy soil layersdrillingforcegrain flows
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