基于泥沙流变学原理的脉动真空预压技术

在疏浚吹填施工中，如何快速降低吹填土的含水率是吹填区软基处理的一项关键工作。为进一步提高排水效率，开展了基于泥沙流变学原理的脉动真空预压排水技术研究。通过大量室内小尺度单板排水模型试验，阐释了脉动作用对促进淤泥质软基脱水的作用机理，分析了脉动真空预压法的排水效果，提出了淤泥质软基处理新方法。试验结果表明此方法优于现行常用的真空预压排水法，有效提高了排水效率，可减轻排水板通道的淤积堵塞问题。

Pulsating vacuum preloading technology based on the principle of silt rheology

During the construction of dredging and hydraulic reclamation,how to reduce the water content of reclaimed soil rapidly is the key point when dealing with the soft foundation in reclaimed area.In order to further improve the drainage efficiency,the study on pulsating vacuum preloading drainage technology was carried out based on the silt rheology theory.By conducting a large number of small-scale single plate water draining model tests inside the room,this paper analyzed the drainage effect with the pulsating vacuum preloading method,and proposed a new method for soft foundation treatment.Experimental results show that this method is superior to the present vacuum preloading drainage method which is commonly used,and it improves the drainage efficiency and reduces the silting and blocking problems in drainage channel.