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Full-Text Articles in Geotechnical Engineering
Analysis Of Deformation Mechanism Of Soft Soil Reinforcement By Vacuum Preloading, Li-Wen Hu, Zhi-Jun Liu
Analysis Of Deformation Mechanism Of Soft Soil Reinforcement By Vacuum Preloading, Li-Wen Hu, Zhi-Jun Liu
Rock and Soil Mechanics
Based on the changes of total stress and pore water pressure in the spring model, the mechanism of vacuum preloading consolidation is studied by theoretically discussing the consolidation behavior of soil in vertical and horizontal directions with different boundary conditions. The variation of effective stress and development of deformation are analyzed for the soil under vacuum preloading under stress paths of K0 consolidation and isotropic consolidation based on the boundary conditions, respectively. Meanwhile, the theoretical earth pressure coefficient (K0MC) at rest for soft soil is deduced based on modified Cam-clay model. With engineering applications, the correctness and effectiveness of the …
Physical Modeling Study On Treatment Of Waste Slurry With Vacuum Preloading At Bottom Combined With Upper Surcharge Loading, Liang-Tong Zhan, Bin Zhang, Xiao-Gang Guo, Wen-Hao Jiang
Physical Modeling Study On Treatment Of Waste Slurry With Vacuum Preloading At Bottom Combined With Upper Surcharge Loading, Liang-Tong Zhan, Bin Zhang, Xiao-Gang Guo, Wen-Hao Jiang
Rock and Soil Mechanics
To solve the safety problem of using waste slurry to backfill discarded open pit mine, the treatment method of vacuum preloading at bottom combined with upper surcharge loading is implemented in the model test. The feasibility of using this method in the backfilling of discarded open pit mine is discussed. The test results show that the proposed method can significantly reduce the water content of the slurry and increase the shear strength of the soil. The water content of the slurry reduces from 450% to 95%–105%, and the reduction of volume reaches 73.4%. The undrained shear strength increases from zero …