In the world of construction and civil engineering, the challenge of managing high-water-content dredged slurry has long been a significant hurdle. However, a recent study published in the journal *Advances in Civil Engineering* (translated from Chinese) offers promising insights that could revolutionize foundation treatment methods, particularly in the energy sector. The research, led by Jinqiang Jin of Wenzhou Oufei Development and Construction Investment Group Co., Ltd., focuses on the optimal vertical spacing of prefabricated horizontal drains (PHDs) in vacuum preloading technology, a method crucial for consolidating dredged slurry.
The study, conducted through indoor model tests, systematically explored the impacts of varying vertical spacing between PHDs and their distances from the slurry surface and bottom. By monitoring the mass of drained water, dissipation of pore water pressure, and surface settlement, the research team identified key parameters that significantly enhance the efficiency of the consolidation process.
“Optimizing the vertical spacing and layer arrangement of PHDs can improve the vacuum pressure transmission efficiency and enhance the overall consolidation effect of dredged slurry,” stated Jin. The findings revealed that the optimal spacing for PHDs is 450 millimeters, with the upper layer positioned 200 millimeters from the slurry surface and the lower layer 100 millimeters from the slurry bottom. This configuration resulted in a 22.51% increase in the mass of drained water and a 14.02% increase in surface settlement compared to the worst-performing group. Additionally, it led to a 6.15% decrease in water content and a 6.99% improvement in vane shear strength.
The implications of this research are substantial, particularly for the energy sector, where efficient foundation treatment is critical for the stability and longevity of infrastructure projects. By providing a scientific basis for the design of vacuum preloading combined with PHD, this study offers key technical parameters that can lead to more effective and cost-efficient construction practices.
As the energy sector continues to expand and diversify, the need for reliable and efficient foundation treatment methods becomes increasingly important. The insights gained from this research could shape future developments in the field, paving the way for more innovative and sustainable construction practices. By optimizing the vertical spacing and layer arrangement of PHDs, engineers can achieve better consolidation effects, ultimately leading to more stable and durable infrastructure.
In the words of Jin, “This study provides a crucial step forward in our understanding of how to optimize the use of PHDs in vacuum preloading technology. It offers a scientific basis for improving the efficiency and effectiveness of foundation treatment methods, which is essential for the energy sector and other industries that rely on stable and durable infrastructure.”
As the construction industry continues to evolve, the findings of this research serve as a testament to the power of systematic investigation and innovation. By leveraging the insights gained from this study, engineers and construction professionals can look forward to a future where foundation treatment is more efficient, effective, and sustainable.